Table 1.
Preoperative patient characteristics
| ADFH (N = 25 limbs) | ADFH/PTS (N = 17 limbs) | p-value* | |||
|---|---|---|---|---|---|
| Average (sd) | Range | Average (sd) | Range | ||
| Age (years) | 12.6 (2.1) | 8.6 to 16.1 | 13.2 (1.6) | 10.7 to 15.9 | 0.48 |
| Length of follow-up (months) | 17.4 (7.1) | 6.4 to 33.8 | 18.2 (8.8) | 10.7 to 47.2 | 0.74 |
| Popliteal angle (°) | 51 (13) | 20 to 75 | 62 (10) | 40 to 80 | 0.004 |
| Knee extension ROM (°) | −13 (5) | −25 to −5 | −19 (8) | −32 to −10 | 0.003 |
| Maximum knee extension in stance (°) | −31 (9) | −16 to −46 | −51 (16) | −29 to −78 | < 0.001 |
ADFH, anterior distal femoral hemiepiphysiodesis; PTS, patellar tendon shortening surgery; ROM, range of motion
*
p-value based on unpaired t-test (continuous variables) or Chi-square (categorical variables)