Article

The goal of the work was to evaluate the mid-term results of the
Rubis II(R) trapeziometacarpal prosthesis for the treatment of basal thumb
osteoarthritis. From 1997 to 2003, 118 trapeziometacarpal prostheses
Rubis II(R) were implanted at Saint-Quentin's Hospital. Seventy-seven have been
clinically and radiologically reviewed. The average follow-up was of 88 months.
Sixteen patients were reviewed by phone. Fourteen patients were lost to contact
and two died (13.5% of cases). Nine prostheses were removed (7.6% of cases).
RESULTS: Among the reviewed prostheses, 76.6% of patients had no pain, the others
had moderate pain. Postoperatively, the average opposition according to
Kapandji's scale was 9.52.
The average key-pinch force was similar on both sides.
All reviewed patients were satisfied or very satisfied. No radiological loosening
was noted. Nine removals were necessary; for post-traumatic dislocation in six
cases, post-traumatic fracture of the trapezium in two cases, and inflammatory
reaction with no infection in one case. The survival rate of the prosthesis was
93% at five years. CONCLUSIONS: The Rubis II(R) prosthesis presents a
satisfactory survival rate after five years and good clinical results. The design
of the implant could explain the absence of loosening.
The main risk of the Rubis
II prosthesis seems to be the post-traumatic dislocation occurring mostly during
the first two years after surgery.
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Langue : FRANCAIS