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Modular shoulder arthroplasty

G M Gartsman1, J A Russell, E Gaenslen

  • 1Texas Orthopedic Hospital, Houston 77030, USA.

Journal of Shoulder and Elbow Surgery
|July 1, 1997
PubMed
Summary
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Biomet modular shoulder arthroplasty significantly improved pain and daily activities in patients. While complications occurred, no revision surgeries were needed for loosening, with most patients reporting improvement.

Area of Science:

  • Orthopedic Surgery
  • Biomaterials Science

Background:

  • Shoulder arthroplasty is a common procedure for debilitating shoulder conditions.
  • Biomet modular shoulder systems are widely used, necessitating evaluation of their long-term outcomes.

Purpose of the Study:

  • To prospectively evaluate the clinical outcomes and complications of Biomet modular shoulder arthroplasties.
  • To assess patient-reported pain, function, range of motion, and complications at a minimum 2-year follow-up.

Main Methods:

  • Prospective study of 100 consecutive Biomet modular shoulder arthroplasties (70 total, 30 hemiarthroplasty).
  • Minimum 2-year follow-up (average 41 months) assessing pain, activities of daily living, range of motion, and complications.
  • Radiographic evaluation for lucent lines and component loosening.

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Main Results:

  • Statistically significant improvements in pain and range of motion were observed.
  • All eight rated activities of daily living showed significant improvement.
  • Complications occurred in 18% of patients; 12% required secondary procedures.
  • Lucent lines were noted in 62.5% of glenoids and 92.3% of cemented stems, but no loosening or dissociation occurred.
  • 95% of patients reported their shoulder as improved.

Conclusions:

  • Biomet modular shoulder arthroplasty provides significant functional improvement and pain relief.
  • While complications and radiographic findings like lucent lines exist, they did not necessitate revision surgery for loosening in this cohort.
  • The study supports the efficacy of Biomet modular shoulder arthroplasty for selected patients.