Total ankle prostheses in rheumatoid arthropathy

Figures & data

Figure 1. Severe degenerative changes.

Figure 2. A Buechel-Pappas type ankle prosthesis in situ.

Table 1. Summary of complications and outcome.

Complication ^a	Resulted in failure (5)	Implant in situ (51)
Peroperative fracture	2	14
Early infection	1	2
Late infection	2	0
No perioperative complications	1	35

^a One patient had both an infection and a fracture.

Table 2. Results in relation to the type of implant used.

	STAR (n = 37)	BP (n = 21)
Poor clinical result
(Kofoed score < 50)	4	0
Removal of implant	4	1
Implant in situ and Kofoed > 50	29	20
Mean (range) follow-up in years	2.4 (0.5–6.5)	3.3 (0.5–9)
Died from unrelated cause	2	0

Figure 3. Kaplan-Meier survival curve with removal of the prosthesis as outcome measure. The green line represents the BP prosthesis, the blue line the STAR.