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.
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.
Tägil
M
M
Department of Orthopedics, Lund University Hospital, Lund, Sweden. magnus.tagil@med.lu.se
Geijer
M
M
Malcus
P
P
Kopylov
P
P
D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000601:surgery; D050806:Arthroplasty, Replacement, Finger; D004954:Esthetics; D005260:Female; D005500:Follow-Up Studies; D018737:Hand Strength; D006801:Humans; D007595:Joint Prosthesis / Q000009:adverse effects*; D008297:Male; D008662:Metacarpophalangeal Joint / Q000000981:diagnostic imaging / Q000601:surgery*; D008875:Middle Aged; D010147:Pain Measurement; D011446:Prospective Studies; D011475:Prosthesis Failure; D011859:Radiography; D016059:Range of Motion, Articular; D012828:Silicones
D012828:Silicones