Table 2 Participant characteristics
From: Recovery patterns in patients undergoing revision surgery of the primary knee prosthesis
No improvement n = 15 | Short improvement n = 20 | Late improvement n = 12 | Prolonged improvement n = 41 | |
|---|---|---|---|---|
Age, years* | 64 (7) | 72 (4) | 67 (10) | 67 (9) |
BMI, kg/m2 | 30 (6) | 30 (5) | 23 (4) | 31 (7) |
Male, n (%) | 8 (53) | 11 (55) | 5 (42) | 10 (24) |
Smoking yes, n (%) | 1 (6.7) | 3 (15.0) | 2 (16.7) | 2 (4.9) |
ASA I/II/III-IV, n | 3/7/5 | 0/16/4 | 1/7/4 | 2/22/17 |
Charnley A/B1/B2/C/n.a., n | 9/1/3/1/1 | 7/1/3/6/3 | 4/4/2/2/0 | 11/10/10/7/3 |
Time between index and revision procedure, months | 24 (5–75) | 35.5 (11–177) | 53.5 (12–233) | 45 (5–296) |
Reason for revision, n (%)* | ||||
Infection | 4 (27) | 2 (10) | 1 (8) | 6 (15) |
Arthrofibrosis | 2 (13) | 4 (20) | 1 (8) | 1 (2) |
Malposition | 3 (20) | 7 (35) | 2 (17) | 17 (42) |
Aseptic loosening | 0 (0) | 5 (25) | 5 (42) | 9 (22) |
Instability | 4 (27) | 1 (5) | 0 (0) | 5 (12) |
Other | 2 (13) | 1 (5) | 3 (25) | 3 (7) |