Does restriction of glenohumeral horizontal adduction reflect posterior capsule thickening of the throwing shoulder?

Ishigaki, Tomonobu; Ishida, Tomoya; Samukawa, Mina; Saitô, Hiroshi; Ezawa, Yuya; Hirokawa, Motoki; Kato, Takumi; Sugawara, Makoto; Tohyama, Harukazu; Yamanaka, Masanori

doi:10.1589/jpts.27.1299

Cited by 21 publications

(16 citation statements)

References 18 publications

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“…For glenohumeral IR, arthroscopic findings have demonstrated that athletes with glenohumeral IR deficits show contracted and thickened posterior capsules [15]. Furthermore, our ultrasonographic study also reported a significant relationship between increased posterior capsular thickness and glenohumeral IR deficits [16]. Another study also showed that stiffness of the posterior capsule was associated with loss of glenohumeral IR [18].…”

Section: Supraspinatus Tendon Changes and Glenohumeral Range Of Motion In College Baseball Playerssupporting

confidence: 63%

“…Prior studies implicated the posterior region of the deltoid and the infraspinatus in the loss of HAd [17,27]. Instead, posterior capsule tightness is thought to mainly affect glenohumeral IR deficit [16,18], resulting in the risk of rotator cuff tendon injuries with internal impingement. Considering the fact that there were relationships between loss of glenohumeral HAd and throwing-shoulder injuries in a prior study [5], the current results suggest that loss of HAd may be associated with other throwing shoulder injuries such as labral tears and biceps tendon injuries.…”

Section: Discussionmentioning

confidence: 99%

“…Shoulder internal impingement, which is characterized by contact of the articular surface of the rotator cuff tendon with the posterosuperior aspect of the glenoid during the late cocking phase of throwing, has been recognized as one of the key pathological mechanisms of throwing-related rotator cuff injuries 15 39 40 41 . Some studies have suggested that glenohumeral posterior capsule tightness causes glenohumeral IR deficits 15 16 18 . In addition, cadaveric studies demonstrated that posterior capsule tightness increased posterosuperior migration of the humeral head 42 and posterosuperior glenohumeral contact pressure 26 in a simulated late-cocking position.…”

Section: Discussionmentioning

confidence: 99%

“…Such altered glenohumeral ROM includes deficits in glenohumeral internal rotation (IR), total rotation (TR), and horizontal adduction (HAd), as well as insufficient gain in glenohumeral external rotation (ER) [5][6][7][8][9][10][11][12][13][14]. Moreover, prior studies indicate that these changes in glenohumeral ROM may be caused by different tissue mechanisms in the glenohumeral capsule, deltoid muscle, and infraspinatus muscle [15][16][17][18]. Considering these studies together with the fact that there are various throwing shoulder injuries such as rotator cuff injuries, labral tears, and biceps tendon injuries [19][20][21][22]; whether all types of altered glenohumeral ROM are equally related to every type of throwing shoulder injury is unclear.…”

Section: Introductionmentioning

confidence: 99%

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Supraspinatus Tendon Changes and Glenohumeral Range of Motion in College Baseball Players

et al. 2021

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Baseball players commonly show altered glenohumeral range of motion during internal rotation, external rotation, total rotation, and horizontal adduction. These altered ranges of motion appear to be associated with throwing shoulder injuries, which frequently involve the supraspinatus tendons; thus, we aimed to examine the relationship between altered glenohumeral range of motion and supraspinatus tendon changes in collegiate baseball players. To investigate this association using the Pearson correlation coefficient, we measured glenohumeral internal rotation, external rotation, total rotation, and horizontal adduction ranges of motion and supraspinatus tendon thickness in 22 college baseball players. Consequently, there was a significant relationship between increase in supraspinatus tendon thickness and greater deficit of internal rotation (r=–0.520, P=0.013). Increased supraspinatus tendon thickness tended to be associated with greater external rotation gain (r=0.394, P=0.073). No other range of motion had any relationship with supraspinatus tendon changes. These results might indicate that restricted glenohumeral internal rotation and excessive gain in external rotation increase the risk of supraspinatus tendon abnormalities in baseball players.

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Section: Supraspinatus Tendon Changes and Glenohumeral Range Of Motion In College Baseball Playerssupporting

confidence: 63%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Supraspinatus Tendon Changes and Glenohumeral Range of Motion in College Baseball Players

et al. 2021

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“…Several researchers have tested shoulder horizontal adduction (SHA) to measure PST 14 , 15 , 16 , 17 , 18 ) . Warner et al 18 ) used a goniometer to measure SHA of subjects in the supine position.…”

Section: Introductionmentioning

confidence: 99%

Reliability of measuring the passive range of shoulder horizontal adduction using a smartphone in the supine versus the side-lying position

2015

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[Purpose] The purpose of this study was to compare the reliability of the measurement of the passive range of motion (PROM) of shoulder horizontal adduction (SHA) measurements using a smartphone for the assessment posterior shoulder tightness (PST) between the side-lying and supine test positions. [Subjects and Methods] Forty-seven subjects (mean ± age, 24.9 ± 3.5 years) without shoulder pathology were included in this study. Intra-rater and inter-rater reliabilities were determined using intraclass correlation coefficients. The SHA PROM of each subject’s dominant shoulder was measured using a smartphone by two investigators in two positions: the standard supine position, and a side-lying position on the tested side. [Results] The intra-rater reliability of the supine measurements was fair to good (ICC3,1 = 0.72–0.89), and for the side-lying measurements was excellent (ICC3,1 = 0.95–0.97). The inter-rater reliability of the supine measurements was fair (ICC2,2 = 0.79) and for the side-lying measurements was excellent (ICC2,2 = 0.94). [Conclusion] These results suggest that for healthy subjects, measurements of SHA using smartphones in the side-lying position has superior intra-rater and inter-rater reliabilities compared to the standard supine position.

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Review of Shoulder Range of Motion in the Throwing Athlete: Distinguishing Normal Adaptations from Pathologic Deficits

Hellem

Shirley

Schilaty

et al. 2019

Curr Rev Musculoskelet Med

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Purpose of Review Overhand (OH) throwers demonstrate a unique motion profile of the shoulder joint complex. This manuscript reviews normal adaptations in the OH thrower and contrast findings with pathologic motion deficits. Recent Findings Multiple adaptations in range of motion have been associated with increased risk for arm injury. The use of a more conservative cutoff value for glenohumeral internal rotation deficit and horizontal adduction in younger throwers may help reduce injury risk. Deficits in glenohumeral internal rotation, total range of motion, shoulder flexion, and external rotation insufficiency have all been proposed as means to identify OH throwers at risk for arm injury, but conflicting evidence exists. Summary Understanding normal adaptation due to repetitive stress of throwing is essential to effective management of these athletes. Adaptive change in bone and soft tissues is normal and contributes to the unique motion profiles expected in throwers. The causative link between normal adaptation and shoulder and elbow injury remains uncertain.

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Does restriction of glenohumeral horizontal adduction reflect posterior capsule thickening of the throwing shoulder?

Cited by 21 publications

References 18 publications

Supraspinatus Tendon Changes and Glenohumeral Range of Motion in College Baseball Players

Supraspinatus Tendon Changes and Glenohumeral Range of Motion in College Baseball Players

Reliability of measuring the passive range of shoulder horizontal adduction using a smartphone in the supine versus the side-lying position

Review of Shoulder Range of Motion in the Throwing Athlete: Distinguishing Normal Adaptations from Pathologic Deficits

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