Table 1.

Characteristics of patients under study

	Osteoarthritis of the knee	Arthrofibrosis of the knee
Number of patients	12	12
Age, year	69.2 ± 2.4 [59–86]	66.4 ± 2.4 [55–77]
Gender, men/women	3/9 (25/75)	4/8 (33/67)
Indication for operation	12, primary total knee arthroplasty	12, revision after total knee arthroplasty
Affected side, right/left	6/6	7/5
C-reactive protein, mg/l	3.2 ± 0.6 [0.4–7.2]	8.0 ± 2.9 [0.7–36.6]
Erythrocyte sedimentation rate, mm 1st hour	8 ± 2 [2–19]	21 ± 8 [2–76]

Data are given as means ± SEM, percentages in parentheses, and ranges in brackets