Treatment of little finger carpometacarpal posttraumatic arthritis with a silicone implant.
OBJECTIVE
To evaluate the short-term clinical and radiographic outcome of a flexible silicone proximal interphalangeal joint implant between the hamate and the metacarpal, to treat posttraumatic little finger carpometacarpal (CMC) osteoarthritis.


METHODS
We treated 3 men with a mean age of 30 years by means of a proximal interphalangeal silicone implant arthroplasty for CMC osteoarthritis of the little finger. Indications were disabling pain on the ulnar side of the hand, grip weakness, loss of CMC joint mobility, and disability for work and daily activities.


RESULTS
All patients were free of pain at a mean follow-up of 20 months. Transverse metacarpal arch mobility and grip strength were restored. The appearance was acceptable, without misalignment, malrotation, or shortening of the little finger ray. Radiographic evaluation showed no fractures or dislocations of the implant and no signs of foreign body reaction to silicone particles.


CONCLUSIONS
This technique offers the advantages of eliminating pain, maintaining length, and restoring mobility of the transverse metacarpal arch, and results in acceptable function and grip strength.
Hand Unit, Orthopaedic Department, Hospital Sant Pau; and Institut Kaplan for Surgery of the Hand and Upper Extremity, Barcelona, Spain. Electronic address: iproubasta@santpau.cat.
Ignacio R
IR
Proubasta
Claudia G
CG
Lamas
Natalia A
NA
Ibañez
Alberto
A
Lluch
D000203:Activities of Daily Living; D000328:Adult; D052737:Carpometacarpal Joints / Q000000981:diagnostic imaging / Q000293:injuries / Q000601:surgery*; D018737:Hand Strength; D006801:Humans; D007595:Joint Prosthesis; D008297:Male; D010003:Osteoarthritis / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery*; D010147:Pain Measurement; D012828:Silicones; D014057:Tomography, X-Ray Computed
D012828:Silicones
Fifth metacarpal; carpometacarpal joint; degenerative arthritis; silicone implant arthroplasty