What question did this study set out to answer?

To evaluate glenohumeral joint kinematics during arm elevation in shoulders with involuntary inferior and multidirectional instability compared with normal shoulders.

January 1, 1989Clinical Orthopaedics and Related Research

Glenohumeral Movements of the Involuntary Inferior and Multidirectional Instability

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Authors

JOJ OzakiNara City Hospital

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Implication

Cineradiographic study reveals abnormal sliding and impaired scapular rotation during arm abduction in unstable shoulders, suggesting diagnostic utility for overhead imaging.

Key Points

To evaluate glenohumeral joint kinematics during arm elevation in shoulders with involuntary inferior and multidirectional instability compared with normal shoulders.
Assessed glenohumeral motion using dynamic cineradiography during progressive abduction of the arm.
Quantified joint kinematics using two radiographic parameters: the shoulder center edge angle and the glenoid angle on overhead-view roentgenograms.
Unstable shoulders exhibited excessive excursion and abnormal sliding motions coupled with deterioration of scapular abduction and external rotation during arm abduction.
Kinematic abnormalities were most pronounced at maximum arm elevation, indicating that overhead roentgenographic views and angle measurements serve as valuable diagnostic indicators for shoulder instability.

Cite This Study

J Ozaki (1989) studied this question.

synapsesocial.com/papers/6a8c2946eada60f85de3dc38 https://doi.org/10.1097/00003086-198901000-00016

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Implication

Cineradiographic study reveals abnormal sliding and impaired scapular rotation during arm abduction in unstable shoulders, suggesting diagnostic utility for overhead imaging.

Glenohumeral Movements of the Involuntary Inferior and Multidirectional Instability

Discussion

Member takes

Implication

Key Points

Cite This Study

Glenohumeral Movements of the Involuntary Inferior and Multidirectional Instability

Discussion

Member takes

Implication

Key Points

Cite This Study

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