Scaphotrapeziotrapezoid Joint Arthritis: A Pilot Study of Treatment with the Scaphoid Trapezium Pyrocarbon Implant

Abstract

Isolated scaphotrapeziotrapezoid osteoarthritis is rare but can cause weakness and wrist pain. We present the results of a pilot study of interposition arthoplasty with a scaphoid trapezium pyrocarbon implant (STPI) by an open and arthroscopic approach for this problem. We performed this procedure in 10 hands in eight patients, all women, with a mean age of 60.5 (range 51-70) years. The average follow-up was 19 (range 2-24) months. Pre-operative X-rays in all cases identified an isolated degenerative arthritis of the scaphotrapeziotrapezoid joint. Average DASH evaluation pre-operatively of 49 was reduced to 39. All of the patients had functional improvement and returned to daily activities after 3 months. The results of this pilot study suggest that the STPI may prove a useful compromise treatment for this problem.

Other commonly used biomedical coatings: pyrolytic carbon coatings

“…The published fi ndings to date are similar to those reported for the partial scaphoid implant: no wear, no pain, no subsidence and good stability (Bellemere and Chaise, 2006;Bellemere et al, 2009;Pegolli et al, 2006;Pequignot et al, 2005). The published fi ndings to date are similar to those reported for the partial scaphoid implant: no wear, no pain, no subsidence and good stability (Bellemere and Chaise, 2006;Bellemere et al, 2009;Pegolli et al, 2006;Pequignot et al, 2005).…”

Amandys® implant: Novel pyrocarbon arthroplasty for the wrist

“…Due to its remarkable properties; low friction coefficient, resistance to wear, biotolerance, a density and elasticity close to those of cortical bone, Pyrocarbon is now the ideal implant material for interposition. Pyrocarbon implants recently developed for the wrist and base of the thumb have proven the reliability of this material and validate the concept of free interposition as a method for arthroplasty [32][33][34][35][36].…”

Capitate Pyrocarbon Prosthesis in Radiocarpal Osteoarthritis

“…[8][9][10][11][12][13][14] The longevity of this prosthesis is not questioned currently. This prosthesis may be placed in front of an injured radial cartilage.…”