Table 1 Results for flexion (active and passive), knee pain, satisfaction with knee and feel of knee preoperatively and at 3 months, 6 months and 1 year follow up
Type of prosthesis | Pre-operative | 3 months | 6 months | 1 year |
|---|---|---|---|---|
Flexion – passive (mean (range)) | ||||
Standard CR TKA | 116 (range 70–140) | 115 (range 90–133) | 117 (range 105–130) | 120 (range 104–146) |
High-flex PS TKA | 118 (range 80–140) | 119 (range 70–135) | 123 (range 105–138) | 127 (range 107–146) |
p-value | 0.61 | 0.18 | 0.0012 | 0.0012 |
Flexion – active (mean (range)) | ||||
Standard CR TKA | - | 109 (range 90–125) | 111 (range 96–128) | 114 (range 90–135) |
High-flex PS TKA | - | 113 (range 70–130) | 115 (range 98–130) | 121 (range 105–140) |
p-value | - | 0.14 | 0.04 | 0.0011 |
Knee pain (median (range)) | ||||
Standard CR TKA | - | 2 (range 0–5) | 2 (range 0–5) | 0 (range 0–8) |
High-flex PS TKA | - | 2 (range 0–9) | 1 (range 0–7) | 0 (range 0–8) |
p-value | - | 0.43 | 0.85 | 0.94 |
Satisfaction with knee (median (range)) | ||||
Standard CR TKA | - | 8 (range 4–10) | 8 (range 4–10) | 9 (range 3–10) |
High-flex PS TKA | - | 8 (range 1–10) | 9 (range 3–10) | 9 (range 4–10) |
p-value | - | 0.50 | 0.56 | 0.61 |
Feel of the knee (median (range)) | ||||
Standard CR TKA | - | 8 (range 2–10) | 8 (range 2–10) | 9 (range 0–10) |
High-flex PS TKA | - | 7 (range 0–10) | 8 (range 0–10) | 9 (range 0–10) |
p-value | - | 0.30 | 0.64 | 0.53 |