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Dislocation arthropathy of the shoulder.

R L Samilson, V Prieto

    The Journal of Bone and Joint Surgery. American Volume
    |April 1, 1983
    PubMed
    Summary

    Shoulder dislocations can lead to glenohumeral arthropathy, especially posterior dislocations with delayed diagnosis. Surgical interventions with internal fixation devices also increase the risk of moderate to severe arthrosis.

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    Area of Science:

    • Orthopedic Surgery
    • Radiology
    • Sports Medicine

    Background:

    • Glenohumeral arthropathy is a potential complication following shoulder dislocations.
    • The long-term effects of recurrent shoulder instability on joint health are not fully understood.
    • Radiographic evidence of arthropathy can be assessed in patients with a history of shoulder dislocation.

    Purpose of the Study:

    • To investigate the prevalence and severity of glenohumeral arthropathy in patients with a history of shoulder dislocation.
    • To identify risk factors associated with the development of arthropathy after shoulder dislocation.
    • To evaluate the impact of dislocation type, recurrence, and surgical intervention on glenohumeral joint health.

    Main Methods:

    • Radiographic assessment of glenohumeral arthropathy in 74 shoulders of 70 patients with a history of dislocation.
    • Comparison of affected shoulders with contralateral, unaffected shoulders to establish baseline.
    • Classification of dislocations into anterior, posterior, and multidirectional types.
    • Analysis of factors including recurrent dislocations, bone defects, and surgical history.

    Main Results:

    • Radiographic evidence of glenohumeral arthropathy was found in all 74 studied shoulders.
    • Posterior dislocations showed a significantly higher incidence of moderate to severe arthrosis compared to anterior dislocations, often linked to delayed diagnosis.
    • Recurrence of dislocations or presence of glenoid or humeral head defects did not correlate with arthrosis severity.
    • Surgical interventions involving internal fixation devices impinging on cartilage frequently led to moderate to severe arthropathy.
    • A notable proportion of shoulders with moderate to severe arthrosis had no prior surgical treatment, with some linked to delayed reduction of posterior dislocations.

    Conclusions:

    • Shoulder dislocations, particularly posterior ones with delayed treatment, are strongly associated with glenohumeral arthropathy.
    • Surgical techniques and delayed diagnosis are critical factors influencing arthropathy development.
    • Further research into non-operative management and optimized surgical approaches is warranted to mitigate arthropathy risk.

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