| Mean ± SD | n(%) |
---|---|---|
Demographics | Â | Â |
Age (years) | 61.4 ± 6.9 |  |
Gender (female) | Â | 73 (70) |
Duration of knee complaints (years) | 11.3 ± 9.3 |  |
Body mass index (kg/m2) | 29.1 ± 4.7 |  |
Radiographic severitya | Â | Â |
K-L score 0/1 | Â | 32 (31) |
   K-L score 2 |  | 28 (27) |
   K-L score 3 |  | 26 (25) |
   K-L score 4 |  | 19 (18) |
Pain severity (NRS, 0 to 10) | 5.1 ± 2.1 |  |
Biomechanical factors | Â | Â |
Quadriceps muscle strength (Nm/kg)a | 0.89 ± 0.47 |  |
Hamstrings muscle strength (Nm/kg)a | 0.61 ± 0.26 |  |
Proprioceptive accuracy (degrees)a | 2.9 ± 1.9 |  |
Varus-valgus laxity (degrees)a | 6.9 ± 2.8 |  |
Physical examination findings | Â | Â |
Bony tenderness (yes)a | Â | 75 (71) |
Crepitus (yes)a | Â | 86 (82) |
Bony enlargement (yes)a | Â | 12 (11) |
Palpable warmth (yes)a | Â | 4 (4) |
Tissue abnormalities, detected by CR | Median (range) | n |
Joint space widtha | Â | Â |
   MTF (0, 1, 2, 3)b |  | 5, 29, 31, 40 |
   LTF (0, 1, 2, 3)b |  | 68, 20, 10, 7 |
   PF (0, 1, 2, 3)b |  | 31, 44, 22, 8 |
Osteophytesa | Â | Â |
   MTF (0, 1, 2, 3)c |  | 21, 57, 24, 3 |
   LTF (0, 1, 2, 3)c |  | 43, 49, 11, 2 |
   PF (0, 1, 2, 3)c |  | 11, 67, 25, 2 |
Tissue abnormalities, detected by MRI | Â | Â |
Cartilage integritya | Â | Â |
   MTF (0 to 6) | 4 (0 to 6) |  |
   LTF (0 to 6) | 2 (0 to 6) |  |
   PF (0 to 12) | 2 (0 to 12) |  |
Osteophytesa | Â | Â |
   MTF (0 to 9) | 3 (0 to 9) |  |
   LTF (0 to 9) | 2 (0 to 9) |  |
   PF (0 to 18) | 5 (0 to 12) |  |
Bone marrow lesionsa | Â | Â |
   MTF (0 to 6) | 1 (0 to 6) |  |
   LTF (0 to 6) | 0 (0 to 6) |  |
   PF (0 to 12) | 0 (0 to 8) |  |
Effusion (0, 1, 2, 3)a,d | Â | 34, 31, 27, 13 |
Synovitisa presence, n (%) | Â | Â |
   In at least one region |  | 36 (34) |
   In Hoffa's fat pad |  | 31 (30) |
   In medial posterior-condylar region |  | 13 (12) |
   In lateral posterior-condylar region |  | 12 (11) |
   In medial recess |  | 6 (6) |
   In lateral recess |  | 7 (7) |