Extraarticular Subtalar Arthrodesis for Pes Planovalgus: An Interim Result of 50 Feet in Patients with Spastic Diplegia

• DOI: 10.4055/cios.2010.2.1.13
• Publication Date: 2010-02-08T02:48:38Z
• Authors: Hong Ki Yoon; Kun Bo Park; Jae Young Roh; Hui Wan Park; Hye Jin Chi; Hyun Woo Kim
• Keywords: Triple arthrodesis; Spastic diplegia; Subtalar joint

There are no reports of the pressure changes across foot after extraarticular subtalar arthrodesis for a planovalgus deformity in cerebral palsy. This paper reviews our results using cannulated screw and cancellous bone graft.Fifty feet 30 patients with spastic diplegia were included. The mean age at time surgery was 9 years, follow-up period 3 years. radiographic, gait, dynamic investigated.All showed union recurrence deformity. Correction abduction forefoot, subluxation talonavicular joint, hindfoot valgus confirmed radiographically. However, calcaneal pitch not improved significantly surgery. Peak dorsiflexion ankle during stance phase increased surgery, peak plantarflexion push off decreased. plantar flexion moment power also Postoperative elevation medial longitudinal arch expressed as decreased relative vertical impulse midfoot an (RVI) lateral midfoot. lower than normal RVI 1st 2nd metatarsal head suggested uncorrected forefoot supination. anteroposterior paths center postoperatively.Our experience suggests that index operation reliably corrects diplegia. Although talus, it does necessarily correct plantarflexed calcaneus these findings short-term longer term observations will be needed.