Table III.
Comparison of mid-term outcomes in medial patellofemoral joint (PFJ) versus no or minimal PFJ lesions
| Medial PFJ | Grade 0/1 chondral lesion | p-value | |||
|---|---|---|---|---|---|
| Pre-operative | Post-operative | Pre-operative | Post-operative | ||
| OKS | 23.2 (7.1) | 40.0 (6.6) | 24.0 (5.6) | 40.0 (7.1) | p = 0.3 |
| VAS | 9.0 (1.5) | 1 (0.5) | 9.0 (1.2) | 1.1 (1.4) | p = 0.6 |
| Satisfaction (pain) | - | 98 (10.6) | - | 99 (7.3) | p = 0.5 |
| Satisfaction (function) | - | 99 (8.3) | - | 99 (2.3) | p = 0.21 |
| UCH Knee Score (performance function) | - | 32.9 (7.3) | - | 33.1 (5.1) | p = 0.3 |
| UCH Knee Score (performance pain) | - | 8.9 (1.0) | - | 9 (1.3) | p = 0.4 |
| Step stair climb (performance function) | - | 4.9 (0.5) | - | 5 (0.3) | p = 0.5 |
| Step stair climb (performance pain) | - | 9.1 (1.1) | - | 10 (1) | p = 0.6 |
| Demographics | |||||
| n | 49 | 28 | |||
| Mean age (range) yrs | 68 (48 to 79) | 71 (59 to 80) | |||
| Gender | 28 M/21F | 13M/15F | |||
| Mean body mass index kg/m2 (range) | 30 (27 to 33) | 29 (25 to 35) | |||
OKS, Oxford Knee Score; VAS, visual analogue score for anterior knee pain; UCH score, University College Hospital score for anterior knee pain