Table 3 Comparison of studies stratifying outcomes according to presence of FTE
Parameter | Berard et al., 2013 | Schüttler et al., 2018 | ||||
|---|---|---|---|---|---|---|
Group | FTE (n = 23) | Non-FTE (n = 32) | P-value | FTE (n = 23) | Non-FTE (n = 28) | P-value |
Sex distribution (males, females) | NR | NR | NR | 11, 12 | 6, 22 | NS |
BMI (kg/m2) | 23.2 | 21.8 | 0.12 | 24.2 | 25.2 | NS |
Age (years) | 24.4 | 24.5 | 0.97 | 20.6 | 24.3 | NS |
% with no trochlear dysplasia | 4.3 | 6.2 | 0.14 | 4.3 | 21.4 | NS |
Presence of patella alta | 52.2 | 28.2 | 0.09 | NR | NR | NR |
C-D index | 1.17 | 1.08 | 0.03 | 1.0 | 1.0 | NS |
% Femoral tunnel malpositioned | 43.5 | 34.4 | 0.58 | AP: 26 PD: 87 | AP: 32 PD: 46 | AP: NS PD: 0.0033 |
% with Increased TT-TG distance (> 20 mm) | 8.7 | 9.4 | 0.69 | 8.7 | 14.3 | NS |
TT-TG distance (mm) | 16.2 | 15.4 | 0.57 | 14.8 | 13.0 | NS |
Patients with recurrent subluxation/dislocation | 1 | 2 | 1.0 | 1 | 0 | NS |
Knee flexion | NR | NR | NR | 137° | 136° | NS |
% with cartilage damage | NR | NR | NR | 39% | 25% | NS |
Patients with positive apprehension test post-op | NR | NR | NR | 3 | 1 | NS |