Correlation Between Range of Motion and Implant Fracture: A 5 Year Follow-Up of 72 Joints in 18 Patients in a Randomized Study Comparing Swanson and Avanta/Sutter Mcp Silicone Prosthesis

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Abstract

Eighteen out of 18 rheumatoid patients (at one centre of a two-centre 30 patient study previously reported) with a mean age of 56 years, and 72/72 operated joints were randomized to Avanta/Sutter or Swanson MCP prostheses and followed for 5 years. Both ulnar deviation and extension lag were improved already at 6 weeks and remained improved at 5 years. The Avanta prosthesis had a better range of motion (ROM) than the Swanson. Six of nine patients with Avanta/Sutter implants had at least one implant fracture compared to 1/9 patients with the Swanson implant (P=0.05) but fracture did not change the outcome subjectively. The ROM at 3 months correlated with the occurrence of an implant fracture at 5 years and a greater early ROM may be related to implant fracture. At 5 years patients remained satisfied and the deformities remained corrected.
Original languageEnglish
Pages (from-to)743-747
JournalJournal of Hand Surgery: European Volume
Volume34E
Issue number6
DOIs
Publication statusPublished - 2009

Subject classification (UKÄ)

  • Surgery

Keywords

  • motion
  • range of
  • prosthetic fracture
  • MCP arthroplasty
  • rheumatoid arthritis
  • ulnar deviation
  • extension lag

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