Table 2.
Baseline and concomitant injury characteristics between those with and without radiographic medial compartment knee OA 5 years after ACL reconstruction. Standard deviation within parentheses.
| nonOA (n=14) |
OA (n=5) |
P- value |
|
|---|---|---|---|
| Age (baseline) (yrs) | 32.1 (11.0) | 33.4 (13.1) | 0.837 |
| Mass (kg) | 87.1 (14.4) | 84.0 (17.5) | 0.703 |
| Body Mass Index (kg/m2) | 27.8 (3.2) | 27.6 (5.2) | 0.912 |
| Time from injury to basline (wks) | 4.7 (4.5) | 5.4 (2.1) | 0.718 |
| Time from injury to ACL reconstruction (wks) | 20.9 (18.7) | 12.0 (4.0) | 0.313 |
| Time from ACL reconstruction to radiographic testing (yrs) | 5.8 (0.9) | 5.6 (0.2) | 0.722 |
| Gait velocity (m/s) | 1.55 (0.15) | 1.48 (0.06) | 0.263 |
| Sex (M:F) | 11:3 | 2:3 | 0.262 |
| Pre-Injury Activity Level (1:2) | 8:6 | 1:4 | 0.303 |
| Graft type (Allo:Auto) | 10:4 | 3:2 | >0.999 |
| Involved lateral compartment OA at 5 years (No:Yes) | 2:12 | 1:4 | >0.999 |
| Uninvolved medial compartment OA at 5 years (No:Yes) | 1:13 | 2:3 | 0.155 |
Abbreviations: yrs, years; kg, kilogram; m, meter; wks, weeks; s, second; M, male; F, female; Allo, allograft; Auto, hamstring-gracilis autograft; OA, osteoathritis.