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Bipolar shoulder arthroplasty

D H Lee1, K M Niemann

  • 1Division of Orthopedic Surgery, University of Alabama at Birmingham 35233.

Clinical Orthopaedics and Related Research
|July 1, 1994
PubMed
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Bipolar shoulder arthroplasty offers good pain relief for rheumatoid arthritis patients with massive rotator cuff tears. However, reconstructive cases show higher complication rates, suggesting careful patient selection is crucial for this salvage procedure.

Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering

Background:

  • Bipolar shoulder arthroplasty is a salvage procedure for shoulders with massive rotator cuff tears.
  • This study examines its efficacy in rheumatoid arthritis and reconstructive cases.

Purpose of the Study:

  • To evaluate the outcomes of bipolar shoulder arthroplasty in patients with arthritic shoulders and massive rotator cuff tears.
  • To compare results between rheumatoid and reconstructive patient groups.

Main Methods:

  • A retrospective study of 14 patients treated between 1985 and 1989.
  • Patients were followed for an average of 3.3 years.
  • Two groups were analyzed: rheumatoid arthritis and reconstructive surgery patients.

Main Results:

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  • Rheumatoid group: good pain relief, with average active motion of 79° flexion, 66° abduction, 20° external rotation.
  • Reconstructive group: fair pain relief, with average active motion of 39° flexion, 44° abduction, 12° external rotation.
  • Complications (6/7) were higher in the reconstructive group, including dislocations and loosening.

Conclusions:

  • Bipolar shoulder arthroplasty is a viable alternative for rheumatoid arthritis patients with massive rotator cuff tears.
  • Absence of subacromial arch and deltoid abnormalities are risk factors for complications in reconstructive cases.