Table 2.

Early versus late failures

Diagnosis	Total	Early revision		Late revision		Mean time to failure (months)
Infection	45	32	71%	13	29%	20.4
Stiffness	23	18	78%	5	22%	15.1
Aseptic loosening	5	2	40%	3	60%	49.9
Extensor mechanism problems	13	6	46%	7	54%	30.5
Instability	3	2	67%	1	33%	17.3
Fracture	6	3	50%	3	50%	21.1
Misalignment/malposition	3	1	33%	2	67%	32.4
Hematoma	4	4	100%	0	0%	0.4
Total	102	68	67%	34	33%	21.5