Table 3.
Functional outcomes and radiological parameters between the two groups at the last follow-up time
| SMOT (n = 39) | SMOT with FO (n = 24) | P value | |
|---|---|---|---|
| Functional outcomes | |||
| AOFAS, point | 79.1 ± 12.4 | 83.2 ± 10.3 | 0.180 |
| AOS pain, point | 2.9 ± 1.1 | 2.6 ± 0.9 | 0.266 |
| AOS function, point | 3.0 ± 1.3 | 2.9 ± 1.2 | 0.761 |
| ROM of ankle, degree | 36.5 ± 4.7 | 39.3 ± 7.4 | 0.071 |
| Takakura stage 1/2/3a/3b/4 | 26/9/2/2/0 | 19/3/1/1/0 | 0.740 |
| Failure rate | 17.9% (7/39) | 4.2% (1/24) | 0.141 |
| Radiological parameters | |||
| TAS | 89.0 ± 3.3 | 89.9 ± 2.8 | 0.271 |
| TT | 2.6 ± 1.4 | 1.9 ± 0.9 | 0.033 |
| TMM | 26.5 ± 3.6 | 28.1 ± 5.5 | 0.167 |
| TC | 76.9 ± 4.5 | 78.6 ± 4.1 | 0.137 |
| TLS | 79.7 ± 2.9 | 80.9 ± 1.8 | 0.074 |
| HFAa | 4.1 ± 2.0 | 2.9 ± 1.4 | 0.043 |
| TFCS | 4.2 ± 1.1 | 3.3 ± 0.8 | 0.001 |
| MDT | 3.1 ± 1.6 | 1.9 ± 1.7 | 0.006 |
SMOT, Supramalleolar osteotomy; FO, fibular osteotomy; AOFAS, the American Orthopaedic Foot and Ankle Society ankle-hindfoot score; AOS, Ankle Osteoarthritis Scale; ROM, range of motion; TAS, tibial articular surface angle; TT, talar tilt angle; TMM, tibial medial malleolar angle; TC, tibiocrural angle; TLS, tibial lateral surface angle; HFA, hindfoot alignment angle; TFCS, tibiofibular clear space; MDT, medial displacement of talus
aThe case number in SMOT group was 21, and in SMOT with FO group was 17