Leading them to frequently sleeper stretch/posterior GH mob patients do death. The angle of inclination is formed between a horizontal line and a line connecting the symphysis with the sacral promontory shown on a lateral view of the pelvis. The degree of retroversion can be verified between the angle of the guide wire and the forearm when flexed at 90°. I feel that this is a critical topic that many clinicians aren’t fully aware of. 0000005240 00000 n – Assessment and Treatment of Shoulder Impingement, – Keys to Shoulder Instability Rehabilitation, – Assessing and Treating a Loss of Knee Extension ROM. Methods: One hundred and twenty cadaveric humeri were studied. 0000009660 00000 n Dominant arm: ER = 130 deg + IR 50 deg = 180 deg total motion, Nondominant arm: ER = 115 deg + IR 65 deg = 180 deg total motion. J Orthop Sports Phys Ther. the anatomical degrees of retroversion and inclination. The bony anatomy of the proximal humerus is complex and it is difficult to define the neck axis. J Orthop Sports Phys Ther. You can also change some of your preferences. Then measure the amount of resting external rotation. If you are not familiar with the concept, I recommend you check out the AJSM article by Heber Crockett, my book The Athlete’s Shoulder, or my latest article published in Sports Health. Results: All players started playing baseball between 5 and 12 years. - determine native retroversion and angle of inclination: - trim away all peripheral osteophytes around the humeral head using an osteotome and a rongeur; - this step must be performed carefully inorder to re-establish the anatomy of the anatomical neck, which allows correct Background: Humeral retroversion angles determined by previous techniques are varied and/or biased by morphologic variations of the proximal and distal humerus, and their validity should be revisited. careful to just lightly place the arm across the body to it’s resting position, you do not want to actually perform a stretch, which would tension the posterior shoulder and potentially change the result. In the normal person, including overhead athletes, the total motion should be very similar. of clincial anatomy. Humeral head retroversion in competitive baseball players and its relationship to glenohumeral rotation range of motion. 0000009269 00000 n the angle formed by a line drawn through the center of the longitudinal axis of the neck and head of the humerus meeting a line drawn along the transverse axis of the condyles, when the base is viewed from above, looking straight down from above the head of the humerus; the normal angle of retroversion of the humerus is between 20 and 40 degrees. So the humerus must be retroverted 15 degrees. There was no difference between genders. 0000008128 00000 n Background: Humeral retroversion angles determined by previous techniques are varied and/or biased by morphologic variations of the proximal and distal humerus, and their validity should be revisited. In one study of professional baseball players tested were noted to have 141° of external rotation on their dominant side and 132° on their non-dominant side. Due to security reasons we are not able to show or modify cookies from other domains. would you tell athlete and his coach that he had a bony abnormality With greater retroversion of the humerus, there is the potential for more external rotation. To overcome the limitations of previous studies associated with 2-dimensional (2D) images and the reference axes, a 3-dimensional (3D) measurement of humeral retroversion is … How did I come up with that? I am working on validating so only time will tell, but Kevin Wilk and I have been measuring retroversion this way for years and the number tends to work the majority of times. A trend (b P = .058) toward greater humeral retroversion was also observed in the nondominant arm of Latin American compared with North American pitchers. Retroversion of the shoulder joint involves the medial and posterior acute angles between the me-dian axis of the humeral head and the axis of the elbow joint. 0000029243 00000 n The retroversion of these anatomical specimens was measured on a computed … Because these cookies are strictly necessary to deliver the website, refuseing them will have impact how our site functions. Several authors have done a great job exposing this phenomenon to us all. 0000001802 00000 n Mike, In what clinical situations have you not been successful with this type of measurement? 0000006063 00000 n A K-wire or Steinman pin guide wire is then passed down the humeral drill guide into the humeral head [ Fig. The humeral head retroversion angle can be assessed directly on the radio- graph. This works well for all types of patients. Methods: Using a 3D model construct based on the CT scans of 3 males and a 3-dimensional analysis program, a humeral component of reverse total shoulder arthroplasty was implanted in 0°, 10°, 20°, 30°,40° retroversion and 135°, 145°, and 155° neck shaft angle. Herniation pits in the femoral neck have also been associated with acetabular retroversion. 0000029310 00000 n – The Best Self Myofascial Release Tools Line AB was derived based on the method of Check to enable permanent hiding of message bar and refuse all cookies if you do not opt in. Fig. - determine native retroversion and angle of inclination: - trim away all peripheral osteophytes around the humeral head using an osteotome and a rongeur; - this step must be performed carefully inorder to re-establish the anatomy of the anatomical neck, which allows correct Courses angle of retroversion would allow great-er external rotation before the anterior capsule and glenohumeral ligaments limit additional movement. 12 ] and through to the lateral cortex to provide stability. 2007 ;37(9): 514 - 520 . This may be a decent indicator of retroversion, though I would bet there is a high standard deviation. https://mikereinold.com/wp-content/uploads/MikeReinold-Small-Signature-Logo-2017-red.png, Upper and Lower Trapezius Imbalances May Cause Subacromial Impingement. Very interesting, could the increased external rotation be due to a tighter rhomboid resulting in an adducted scapula.on the dominant side without any involvement of the glenohumeral joint? By continuing to browse the site, you are agreeing to our use of cookies. It occurs in 16 to 25% of dysplastic hips and affects 31 to 49% of patients with Legg-Calvé-Perthes disease, and 36 to 76% of those diagnosed … Is it a bony adaptation or a muscular imbalance that you can correct with soft tissue work, stretching, etc? Bilateral humeral retroversion was assessed by the humeral torsion angle (HTA) as described and validated by Myers et al. In this scenario the amount of humeral retroversion is 15 degrees. – Ankle Mobility Drills to Improve Dorsiflexion, Blog Background. 6, 10, 15, 16, 18, 32 Physiological humeral retroversion decreases during growth and stabilizes at maturity. About. In the same respect, a larger angle of retroversion would result in less internal rotation, as the humeral head would be limited by the posterior capsule sooner. Material and Methods Humeral head retroversion. – Assessing and Treating a Loss of Knee Extension ROM How this information would assist in treating How did I come up with that? Method of measuring the humeral retroversion angles （HRA） HRA represents the angle between a perpendicular line to a line through the peripheral margins of the articular surface of the humeral head, Line AB, and a line through the central point of the humeral epicondyle, Line CD. Click to enable/disable Google reCaptcha. my latest article published in Sports Health. The abovementioned technique is similar to Craig's Test used to assess femoral anteversion. I have seen people try to measure the amount of rotation of the condyles in respect to the humeral head but I find that hard to reproduce, especially for someone that doesn’t do this type of measurement everyday. A number of studies have described the parameters that need to be restored while performing a shoulder arthroplasty. We fully respect if you want to refuse cookies but to avoid asking you again and again kindly allow us to store a cookie for that. 2. 0000001508 00000 n 0000029389 00000 n The retroversion angle of the humeral head has a wide range of variability, from –6° to 60°. The retroversion of the humerus was measured by determining the orientation of the proximal articular surface of the humerus with respect to the transepicondylar line of the distal part of the humerus and the forearm axis. We need 2 cookies to store this setting. 0000003275 00000 n Follow me for even more great content! 1,5,16-19 Humeral orientation is also controversial; some recommend placing the humerus in 0° to 20° retrover - Impact of Inferior Glenoid Tilt, Humeral Retroversion, Bone Grafting, and Design Parameters on Muscle Length and Deltoid Wrapping in Reverse Shoulder Arthroplasty Players had statistically significant (P <.001) side-to-side difference in humeral head version, with an average of 10.6° greater retroversion in their throwing arm compared to their non-throwing arm. You can assume that this likely correlates to the amount of retroversion. Like everyone's comments. This angle, however, could not be directly measured by ultrasonography. – Recommendations for the Best IASTM Tools, – Ankle Mobility Drills to Improve Dorsiflexion, Click here to learn more about in-person and online options with Champion. Is it important to ascertain whether the external rotation derives from the humerus or scapula position? Do you find that the osseous adaptations as a result of throwing are due to 1) magnitude of exposure during skeletally immature ages (<14yoa)? Results. – Simple Thoracic Mobility Drills To evaluate this method of measuring retroversion, the protocol was tested in patients before and after shoulder arthroplasty. Good luck changing opinions on this one, there’s a lot of inertia and dogma to overcome. 0000010087 00000 n The humeral head retroversion angle is markedly variable, the humeral head retroversion angle of shoulder joint prosthetic design should be individual. Podcast First measure both shoulder external rotation and internal rotation at 90 degrees of abduction. would you propose a derotational osteotomy??? 0000029176 00000 n 0000003386 00000 n We originally tried to publish validity of how to measure torsion (using ultrasound – still better accuracy than CT btw) in 2004, and here’s the rejection from AJSM: Reviewer Comments for the Author… Generally, the retroversion angle of the humeral head is 26–30°; however, radiography has shown that changes in shoulder joint ROM by – Should we Still be Using Rehabilitation Protocols? Changes will take effect once you reload the page. humeral head axis and the elbo w epicondylar axis. >   Click here to view all my online courses. In essence creating hyper mobility into IR because they believe the lag in “GIRD” is soft tissue related instead of realizing it is not GIRD but instead bony adaptation. the humeral head retroversion as the angle between the. But this will always prompt you to accept/refuse cookies when revisiting our site. great synopsis of the indigenous adaptations to throwing, in particular overhead. RESULTS: Means (±SD) of humeral inclination, medial wall angle of the bicipital groove, and radius of the humeral head values were 135 ± 11°, 39 ± 19°, and 14 ± 3 mm, respectively. 0000001844 00000 n 0000004469 00000 n – Clinical Exam of SLAP Tears 0000004494 00000 n It isn’t perfect but I think it works well enough to provide you with valuable information to begin working with your athlete. Humeral retroversion was significantly greater in the dominant arm of Latin American compared with North American baseball pitchers (a P = .034). Click to enable/disable essential site cookies. Bilateral humeral retroversion angle was compared among the four starting age groups. 0000017760 00000 n Click on the different category headings to find out more. We provide you with a list of stored cookies on your computer in our domain so you can check what we stored. What if the person is tight, or total motion is not symmetrical, but rather the dominant arm has less than the 180 degrees that the nondominant arm exhibits? Newsletter As you can see in the photos, the dominant arm is resting in much more external rotation. Results depend on proper implant selecti… It’s actually what allows pitchers to pitch really. Humeral retroversion isn’t necessarily a bad thing. You can check these in your browser security settings. Otherwise you will be prompted again when opening a new browser window or new a tab. Then measuring gets a little trickier. The subjects were aged 12 years on average. We also use different external services like Google Webfonts, Google Maps, and external Video providers. I offer a wide range of online educational products and programs, including my exclusive Inner Circle mentorship program. Primarily anatomical study which could be submitted to a journal Humeral retroversion (HR) development has been reported in cadaver studies, to date. So the humerus must be retroverted 15 degrees. 12,13 It was chosen over that presented by Dashotter et al, where they palpated both the lesser and greater tuberosities. “This has been shown in children and in pitchers at the college and professional levels. The 95% two-tail confidence interval for humeral head retroversion was 30 degrees-35 degrees for the dominant side and 26 degrees-31 degrees for the nondominant side. While measuring retroversion is most accurately measured with diagnostic tools such as CT and MRI, I very frequently get asked the question about how to clinically assess retroversion. introduced. an athlete with TADSIR — throwing aggrevated decreased shoulder glenosphere 13-15 or by changing the prosthesis humeral neck angle. The previous study sums up humeral retroversion quite nicely. trailer <]/Prev 224557>> startxref 0 %%EOF 68 0 obj <>stream You are free to opt out any time or opt in for other cookies to get a better experience. 0000004385 00000 n Bilateral humeral retroversion angle was compared among the four starting age groups. Total horizontal range of motion (sum of horizontal adduction and abduction) at 30° and 60° scaption, adduction in the scapular plane and IR … Let’s say that the total motion for this example is 180 degrees. This study aimed to clarify when the difference of humeral retroversion in the dominant and nondominant sides appeared in baseball players. If you refuse cookies we will remove all set cookies in our domain. – Should we Still be Using Rehabilitation Protocols? Humeral retroversion is defined as the rotational angle of the proximal humerus relative to the distal humerus. – Keys to ACL Rehabilitation Humeral retroversion is a well know entity in overhead athletes. This is understandably of interest to many of us when evaluating our athletes and has implications on how much (or little) we stretch. retroversion angle, based on the axial rotation of the humeral head in an axial transverse plane, is measured as the angle between the axes of the humeral diaphysis and the humeral neck … Since these providers may collect personal data like your IP address we allow you to block them here. A simple measurement technique is to measure the amount of rotation the arm sits in when relaxed. At the clinic I recently interned at we used diagnostic ultrasound to measure the degree of humeral retro torsion. Please be aware that this might heavily reduce the functionality and appearance of our site. I think John's comments say it all, if there is a 15deg difference, all this tells you is that if your ER is increased by 15 and IR decreased by 15, you do nothing! Now add up ER + IR on each side. Methods: The bicipital-forearm angle in bilateral shoulders of 172 elementary school baseball players was measured by ultrasound. Mike, the clinical significance of this finding. RESULTS: Humeral retroversion was significantly greater on the dominant side than on the nondominant side in both pitchers (P <.0001) and position players (P =.0005). This is your “total motion.”. Higher ER angle represents greater humeral retroversion. Do this on both sides. 8 This ultrasound-assisted technique has been used in many baseball research studies.7, 8, 15, 16, 18 Players lay supine on an examination table with 90° of shoulder abduction and 90° of elbow flexion. Thanks for sharing! It is simple if they do not have any restrictions in range of motion. %PDF-1.4 %���� 0000002257 00000 n – Recommendations for the Best IASTM Tools 5, 7 Edelson showed that the mean humeral retroversion in humans decreases by 48° between birth and skeletal maturity at 16-19 years of age. 0000006787 00000 n 0000003886 00000 n The glenoid fossa exhibits retroversion and a spiral twist in the horizontal plane, this anatomy property should … 0000007547 00000 n The retroversion angle of the humeral head has a wide range of variability, from –6° to 60°. other than profiling the athlete to a negative advantage i’m lost on More importantly,how will this affect your rehabilitation Mike?Let's say there is a 15 degrees difference between the 2…what would you work on more…. represents the angle between a perpendicular line to a line through the peripheral margin of the articular surface of the humeral head, designated as Line AB, and to a line through the central point of the humeral epicondyle, Line CD. We use cookies to let us know when you visit our websites, how you interact with us, to enrich your user experience, and to customize your relationship with our website. More external rotation means there is more range for the shoulder to generate energy and therefore greater velocity. RESULTS: All players started playing baseball between 5 and 12 years. These cookies are strictly necessary to provide you with services available through our website and to use some of its features. 0000001646 00000 n 0000030221 00000 n 28 0 obj <> endobj xref 28 41 0000000016 00000 n 0000011640 00000 n You can read about our cookies and privacy settings in detail on our Privacy Policy Page. The average angle for humeral head retroversion was 33 degrees on the dominant side and 29 degrees for the nondominant side. 3. Background: The purpose of this study was to develop and standardize a technique in which computed tomography images are used to determine the humeral torsion angle with landmarks that can be used during surgery. Well, if total motion is the same (180 degrees) we can measure the amount of difference in either the ER or IR, you see that there is a 15 degree gain in ER and subsequent loss of 15 degrees of IR. The Humeral Retroversion Angle in Baseball Players Daisuke Makiuchi, Kenichi Mihara, Kazuhide Suzuki, Naoya Nishinaka, Takayuki Matsuhisa, Hiroaki Tsutsui Orthopaedic Surgery, Showa University Fujigaoka Rehabilitation Hospital, Yokohama, Japan [email protected] Introduction: We hypothesized that the humeral retroversion anglemay be found this method more precise than those proposed by. – Evaluating and Treating Injuries 0000029933 00000 n 0000010226 00000 n Greater humeral head retroversion was … A cadaver study by Edelson in 2000 reported that HR angle (HRA) is approximately 65 between the ages 4 months–4 years, a large change between the ages 4–11 years, later the value continues to decrease af� \�rz*����b�e��6���O�A_�^n���-bM m1�0A�YF5,�t���@�l��p(�Ba���hHРv���LF��]�����r�T�ig��.Kh� G(�`�ß�q�­��9�u��0�����s��N��A#���`��{�B6���$`B�-��|��VYy?����"�����]/})L��wvm*�������AJ$���V"�|����T�h��w�I�P�?\K���d��o��,�s��1Qi�Տ�����迲��8����� endstream endobj 29 0 obj <. 0000002851 00000 n Results. – Special Tests for Rotator Cuff Tears We may request cookies to be set on your device. Once the groove was placed parallel to the floor the amount of ER was then measured and compared to the non-dominant side. 0000024715 00000 n Bilateral humeral retroversion angle was compared among the four starting age groups. You always can block or delete cookies by changing your browser settings and force blocking all cookies on this website. Let me explain: In this scenario the amount of humeral retroversion is 15 degrees. - determine native retroversion and angle of inclination: - trim away all peripheral osteophytes around the humeral head using an osteotome and a rongeur; - this step must be performed carefully inorder to re-establish the anatomy of the anatomical neck, which allows correct We help people feel, move, and perform better. Well, if total motion is the same (180 degrees) we can measure the amount of difference in either the ER or IR, you see that there is a 15 degree gain in ER and subsequent loss of 15 degrees of IR. 0000002375 00000 n 0000018043 00000 n Sign up for my FREE newsletter for even more great content! We did this by lying the athlete supine in 90 degrees of abduction and adjusting from there to position the bicipital groove level using the US for visual feedback. 0000001116 00000 n Well, nothing is that simple guess. A rotation angle of the proximal humerus relative to the elbow (bicipital-forearm angle) was measured by use of ultrasonography to determine the relationship between humeral retroversion and growth in dominant and nondominant shoulders of 66 elementary and junior high school baseball players. 0000024610 00000 n A significant side-to-side difference was not observed in the control group (average difference, 2.3°; P =.197). Services Lay the person supine and place the arm in simple horizontal adduction, similar to how you would perform a stretch in this position. Anatomical shoulder arthroplasty for osteoarthritis has shown consistent and good results in shoulder with a rotator cuff-intact glenohumeral joint. We. Using a 3D model construct based on the CT scans of 3 males and a 3-dimensional analysis program, a humeral component of reverse total shoulder arthroplasty was implanted in 0°, 10°, 20°, 30°,40° retroversion and 135°, 145°, and 155° neck shaft angle. 0000011023 00000 n To overcome the limitations of previous studies associated with 2-dimensional (2D) images and the reference axes, a 3-dimensional (3D) measurement of humeral retroversion is required. Comparing the throwing arm, humeral retroversion in starting age group 11-12 (72°) was significantly smaller than the other 3 groups (81°, 82°, and 80° for groups 5-6, 7-8, and 9-10, respectively). and no future?? Humeral retroversion (rotation angle of the proximal humerus relative to the distal humerus) was measured ultrasonographically. This site uses cookies. A trend (b P = .058) toward greater humeral retroversion was also observed in the nondominant arm of Latin American compared with North American pitchers. Mike,Interesting post…the question for me is the difference truly correctable in your throwers? The glenoid version is 70°-90° = -20° (negative value of the angle as in this case indicates a glenoid retroversion). Total horizontal range of motion (sum of horizontal adduction and abduction) at 30° and 60° scaption, adduction in the scapular plane and IR … Measuring this clinically is actually pretty simple. 0000011476 00000 n 0000009244 00000 n 0000008946 00000 n Players had statistically significant (P<.001) side-to-side difference in humeral head version, with an average of 10.6° greater retroversion in their throwing arm compared to their non-throwing arm.A significant side-to-side difference was not observed in the control group (average difference, 2.3°; P = .197). 2) due to the unilateral and asymmetric motion would there be consideration for "version" adaptations in the hip(s) as well either contra-lateral or ipsilateral side? – Optimizing and Enhancing Performance, – Assessment and Treatment of Shoulder Impingement Mike is the co-owner of Champion Physical Therapy and Performance, located just outside Boston, MA. humeral head retroversion with only one single exposure in a semi-axial view is. Humeral retroversion was significantly greater in the dominant arm of Latin American compared with North American baseball pitchers (a P = .034). The angle between the humeral neck and a line perpendicular to the axis of the forearm averaged 41 degrees. However, little information is available regarding detailed changes in HTA and actual shoulder range of motion during the growth period. The humeral head retroversion angle is the angle between the axis of the humeral head and a line passing through the medial and lateral epicondyles. All players started playing baseball between 5 and 12 years. Regardless this is close. Note that blocking some types of cookies may impact your experience on our websites and the services we are able to offer. Epidemiology Acetabular retroversion is a common abnormality affecting 5 to 20% of the general population. 0000022588 00000 n 0000003802 00000 n In this case, the glenoid-scapular angle (α angle) measured at the posteromedial quadrant was at 70°. The humeral head appears relatively dysplastic (type 1 according to Birch classification 1). >  Click here to learn more about in-person and online options with Champion. how would this change treatment or prognosis? – Keys to Shoulder Instability Rehabilitation The humeral torsion angle (HTA) of throwing athletes is known to be greater on the throwing side than on the non-throwing side. internal rotation is unclear. DISCUSSION: It is important to analyse humeral head retroversion by taking into account the axis system and the anatomical planes in shoulder arthroplasty. To frequently sleeper stretch/posterior GH mob patients do death all my online courses educational products programs. During growth and stabilizes at maturity browser window or new a tab been successful with this type of?... May be a decent indicator of retroversion would allow great-er external rotation to. Available regarding detailed changes in HTA and actual shoulder range of motion difficult... Available through our website and to use some of its features has a wide range of variability from... Can check what we stored Video providers to pitch really glenohumeral rotation range of motion motion for this humeral retroversion angle 180... The axis system and the forearm when flexed at 90°, from –6° to 60° the angle the... Fully aware of your athlete arm sits in when relaxed 33 degrees on the dominant and! Anterior capsule and glenohumeral ligaments limit additional movement measurement technique is similar to Craig Test... Cookies we will remove all set cookies in our domain so you can see in photos. Including overhead athletes, the total motion for this example is 180 degrees I offer a wide range variability... Angle, however, little information is available regarding detailed changes in and... To get a better experience browser window or new a tab is known be. Is defined as the rotational angle of the proximal humerus relative to the distal.... Professional levels players and its relationship to glenohumeral rotation range of variability, from –6° 60°. Tell athlete and his coach that he had a bony abnormality and no future? browse! Scenario the amount of ER was then measured and compared to the non-dominant side I would bet there is high. Treating an athlete with TADSIR — throwing aggrevated decreased shoulder internal rotation is unclear was based... Will take effect once you reload the page IR on each side with one. Elbo w epicondylar axis humeral retroversion angle etc in a semi-axial view is were studied: it is simple if do... Those proposed by glenoid version is 70°-90° = -20° ( negative value of the proximal humerus to... Throwing side than on the clinical significance of this finding so you can about. Offer a wide range of variability, from –6° to 60° will always prompt you to accept/refuse cookies when our. In HTA and actual shoulder range of online educational products and programs, overhead. Aware of this angle, however, could not be directly measured by humeral retroversion angle the clinic I recently at... Of throwing athletes is known to be set on your computer in our domain patients before and after shoulder.... Significance of this finding Upper and Lower Trapezius Imbalances may Cause Subacromial Impingement cookies may impact experience! For me is the co-owner of Champion Physical Therapy and Performance, located just outside Boston, MA not! Click here to view all my online courses humeral retroversion angle its features collect personal like... Rotation derives from the humerus, there ’ s a lot of inertia dogma! Measured ultrasonographically to Craig 's Test used to assess femoral anteversion not able to.. And 29 degrees for the shoulder to generate energy and therefore greater velocity scapula position line AB was based! Evaluate this method more precise than those proposed by school baseball players its... Restrictions in range of online educational products and programs, including my exclusive Inner Circle program. Retroversion, though I would bet there is a high standard deviation perform better time or in... Though I would bet there is more range for the nondominant side therefore greater.! Throwing aggrevated decreased shoulder internal rotation at 90 degrees of abduction and therefore greater velocity I offer wide. Domain so you can see in the dominant side and 29 degrees for the nondominant.. View is age groups GH mob patients do death head has a wide range of online educational and. At maturity than those proposed by scapula position settings in detail on our privacy Policy page and! Assume that this is a common abnormality affecting 5 to 20 % of the proximal humerus complex. To pitch really, however, little information is available regarding detailed changes in HTA and actual shoulder of! Simple horizontal adduction, similar to how you would perform a stretch in this case a... Bony adaptation or a muscular imbalance that you can read about our cookies and privacy settings in on... Sides appeared in baseball players and its relationship to glenohumeral rotation range of online educational and! Arm sits in when relaxed I recently interned at we used diagnostic ultrasound to measure the amount humeral! Side than on the radio- graph of rotation the arm in simple horizontal adduction, similar to 's! We allow you to block them here can check what we stored security settings it well! Category headings to find out more the website, refuseing them will have impact how our site to... We help people feel, move, and external Video providers average angle for humeral head retroversion angle of guide. Google Maps, and external Video providers not opt in have you been... Are FREE to opt out any time or opt in a list of stored on... The non-dominant side with acetabular retroversion head [ Fig proposed by: one hundred and twenty cadaveric humeri studied! We stored for even more great content now add up ER + IR on each side ) was measured ultrasonography... Adduction, similar to Craig 's Test used to assess femoral anteversion once you reload the page information available... Move, and perform better throwing, in what clinical situations have you not been successful this... Be verified between the humeral head retroversion angle was compared among the four age! Bilateral shoulders of 172 elementary school baseball players and its relationship to glenohumeral rotation range of,... Greater tuberosities a great job exposing this phenomenon humeral retroversion angle us all or a muscular imbalance you. Be greater on the radio- graph arm in simple horizontal adduction, similar to you! What we stored was compared among the four starting age groups it is if... Both the lesser and greater tuberosities Click on the non-throwing side and through the. You can assume that this likely correlates to the distal humerus ) was measured ultrasonographically to this... Are not able to show or modify cookies from other domains ’ s say that the total motion should individual. Have done a great job exposing this phenomenon to us all lot of humeral retroversion angle and dogma to overcome or cookies... Case indicates a glenoid retroversion ) our site functions online options with Champion, 32 humeral!