| Objective To study the effects for Evans osteotomy with reconstruction of posterior tibial tendon insertion on navicular for treatment of the forefoot outreach flatfoot related with accessory navicular. Methods From Sep 2013～Sep 2016, 20 patients (25 feet) with the forefoot outreach flatfoot related with accessory navicular were treated underwent Evans osteotomy with reconstruction of posterior tibial tendon insertion on navicular were available to follow up. We adopt AOFAS score for function evaluation and visual analogue scale（VAS）for pain evaluation. At the same time, we contrast the evaluation index in the arch height, calcaneus inclination angle, anteroposterior and lateral position talocalcaneal angle, anteroposterior and lateral position talar-first metatarsal angle, talonavicular joint angle, between pre-operation and last follow-up. Results All patients got primary wound healing without any complication except 1 patient appear little skin necrosis, and the Evans osteotomy area of bone graft was healed. Twenty patients (25 feet) were followed up 6 to 20 months with an average of 12 months. There were significant differences in the arch height, calcaneus inclination angle, anteroposterior and lateral position talocalcaneal angle, anteroposterior and lateral position talar-first metatarsal angle, talonavicular joint angle, between pre-operation and last follow-up (P<0.05). Conclusion The Evans osteotomy with reconstruction of posterior tibial tendon insertion on navicular for treatment of the forefoot outreach flatfoot related with accessory navicular, with correction of deformity, excellent effectiveness, and less complications. |
