Does This Patient Have an Instability of the Shoulder or a Labrum Lesion?

Luime, Jolanda J.

doi:10.1001/jama.292.16.1989

Cited by 59 publications

(32 citation statements)

References 46 publications

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“…However, these patients often do not have pain with the arm in an abducted and externally rotated position, and this pain is often made worse with a relocation test. 17,18 The similarity between each of these clinical presentations contributes to the difficulty in the diagnosis of shoulder pain in the overhead athlete.…”

Section: Discussionmentioning

confidence: 99%

The unstable painful shoulder (UPS) as a cause of pain from unrecognized anteroinferior instability in the young athlete

Boileau

Zumstein

Balg

et al. 2011

Journal of Shoulder and Elbow Surgery

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Section: Discussionmentioning

confidence: 99%

The unstable painful shoulder (UPS) as a cause of pain from unrecognized anteroinferior instability in the young athlete

Boileau

Zumstein

Balg

et al. 2011

Journal of Shoulder and Elbow Surgery

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“…In spite of the glenoid cavity's lack of a deep socket or isometric ligaments, the normal shoulder accurately constrains the humeral head to the center of the glenoid cavity throughout most of the arc of movement [3][4][5][6] . However, its small articulating surface areas correlate with greater probability of dislocation 7,8 . The morphological implication of the glenoid cavity in shoulder stability has been extensively researched 3,9,10 .There have also been various findings about the scapular anthropometry, kinanthroplogy and kinematics [11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

Morphometry of the glenoid cavity and its correlation with selected geometric measurements of the scapula

Aigbogun

Oladipo

Oyakhiree

et al. 2017

Bangladesh J Med Sci

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Introduction: An understanding of the normal glenoid cavity morphometry is important in corroborating the basis of luxation at the glenohumeral joint (GHJ). This study was carried out to determine the morphomertic relationship of the glenoid cavity to joint stability and device models to estimateglenoid cavity dimensions ofthe scapular boneof Nigerian origin in a post-mortem skeletal state using selected angles and dimension Methods: A total of 200well-macerated unpaired scapulaebone (96 right and 104 left) with complete ossification were used for this study. Geometric measurements were taken using standard procedures. SPSS (IBM® version 20) was used to analyze the data and the results of all measured parameters (for both sides and total) were presented. Correlation was determined from the summation of the bilateral measurement of; the superior (SSA), inferior (ISA) and medial (SVA) angles of the scapulae, maximum height of the scapula (MHS), and maximum glenoid height and width (MGH and MGW). Glenoid index (GI) was calculated by dividing MGW by MGH. Regression formulae for estimation the glenoid cavity parameters were derived. Significance level was set at 95% (P≤0.05 was considered significant). Result: The mean GIwas calculated as 68.18±5.93% (with min. and max. ratio of 54% and 87%respectively). Of the predictor variables for estimating MGH and MGW, SSA was weakly (-) correlated (r<0.2; R 2 <0.1), MSH was averagely (+) correlated (r<0.55; R 2 <0.3), while a strong (+) correlation was observed between the interglenoid cavity dimensions (r=0.785; R 2 =0.617). Conclusion: Indices below 50% and above 89% are indications of possible GHJ problems.Using single measurements of various scapular parts to estimate the glenoid cavityis possible.Distortion of the morphometric relationship that exists between MGW and MGH is a clear pointer for glenohumeral luxation syndromes.

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“…Small articulating surface areas correlate with greater probability of dislocation [1]. Shoulder instability and rotator cuff injuries represent the most common reasons of shoulder pain and dysfunction and often correlate with secondary glenohumeral osteoarthritis.…”

Section: Introductionmentioning

confidence: 99%

The glenohumeral joint - a mismatching system? A morphological analysis of the cartilaginous and osseous curvature of the humeral head and the glenoid cavity

et al. 2014

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BackgroundRadial mismatch, glenohumeral conformity ratios and differences between cartilaginous and osseous radii highly depend on the measured plane. The comparison of cartilaginous radii between humeral head and glenoid in different planes provides new information to understand the degree of conformity during abduction of the upper limb.MethodsTo investigate the radii, CT-images in soft-tissue kernel of 9 specimen were analysed using an image visualization software. Statistical analysis of the obtained data was performed using the t-test.ResultsMeasurements of the radii in the glenoid revealed a significantly larger radius for bone than cartilage, whereas for the humeral head the opposite was the case. Highest ratios for cartilage in the transverse plane were found in the inferior and central areas of the joint surface, whereas the smallest ratios were found in the superior area. The radial mismatch varied between 0.1 mm and 13.6 mm, depending on the measured plane.ConclusionsThe results suggest that in abduction, the cartilaginous guidance of the humeral head decreases. This might permit the humeral head an anterior-posterior shifting as well as superior-inferior translation. Surgical reconstruction of the normal glenohumeral relationships necessitates precise information about the glenohumeral morphology to ensure proper sizing and correct placement of prosthetic components and osteochondral allografts.

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Does This Patient Have an Instability of the Shoulder or a Labrum Lesion?

Cited by 59 publications

References 46 publications

The unstable painful shoulder (UPS) as a cause of pain from unrecognized anteroinferior instability in the young athlete

The unstable painful shoulder (UPS) as a cause of pain from unrecognized anteroinferior instability in the young athlete

Morphometry of the glenoid cavity and its correlation with selected geometric measurements of the scapula

The glenohumeral joint - a mismatching system? A morphological analysis of the cartilaginous and osseous curvature of the humeral head and the glenoid cavity

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