the results of biplanar distal femoral osteotomy; a case series study

background:  distal femur wedge osteotomies for varus or valgus alignment of the lower extremity could be done in either uniplanar or biplanar fashion.:union: time and stability of the osteotomy site has been considered important in this anatomic region. in this study, clinical and radiographic findings of biplane distal femur osteotomy were reported. methods: clinical, functional, and radiological findings of eight patients (10 knees)underwent biplane distal femur osteotomy were evaluated. visual analogue score (vas) and lysholm-tegner knee score were used for the assessment of pain and function before and three months after surgery. results:  in this study, eight patients were included. all patients were female. the mean age was 28±6.3. the mean pre-operativemechanical anglewas 8.7±2.2˚and the post-operativeangle was 1.4±0.53˚ in patients with valgus alignment whileit was 7.0±1.0˚preoperatively and 0.66±1.2˚ postoperatively in patients with varus alignment. the mean lateral distal femoral angle (ldfa)was 85±8.0˚ before surgery and was 88±1.3˚ after surgery. according to lysholm- tegner knee score, in the post-operative visit, sixknees were good and four were excellent. the mean :union: time was 9.2±2.3 weeks.   conclusions:  biplane distal femur osteotomy is a reliable technique that creates larger surfaces and more stability at the osteotomy site with further rapid :union:.