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Total wrist replacement using the modified Volz prosthesis.

J Menon1

  • 1Department of Orthopedic Surgery, Kaiser Permanente Medical Center, Fontana, California 92335.

The Journal of Bone and Joint Surgery. American Volume
|September 1, 1987
PubMed
Summary
This summary is machine-generated.

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The modified Volz prosthesis for total wrist arthroplasty showed a 33% failure rate and 44% overall complications. Pre-existing deformities negatively impacted outcomes, suggesting careful patient selection for wrist replacement surgery.

Area of Science:

  • Orthopedic Surgery
  • Reconstructive Surgery

Background:

  • Total wrist arthroplasty aims to restore function and alleviate pain in severe wrist arthritis.
  • The modified Volz prosthesis is one option for total wrist replacement.

Purpose of the Study:

  • To evaluate the outcomes and complications of the modified Volz prosthesis in total wrist arthroplasty.

Main Methods:

  • Eighteen total wrist arthroplasties were performed using the modified Volz prosthesis in sixteen patients.
  • Follow-up ranged from 24 to 66 months (mean 40 months).
  • Outcomes were assessed using a 100-point scoring system.

Main Results:

  • An overall complication rate of 44% was observed.
  • Six arthroplasties (33%) failed, requiring reoperation due to component loosening, dislocation, or muscle imbalance.

Related Experiment Videos

  • Excellent, good, and poor results were achieved in 45%, 11%, and 11% of the remaining cases, respectively.
  • Significant preoperative deformity correlated with poor postoperative outcomes.

    • Conclusions:

    • The modified Volz prosthesis has a notable complication rate and failure rate.
    • Patient selection is crucial, particularly regarding preoperative deformity and extensor tendon integrity.
    • Surgeons should consider alternative procedures like arthroplasty or arthrodesis if extensor tendons are inadequate.