Calcaneal Lengthening Osteotomy for the Symptomatic Flexible Flatfoot in Adults / 대한족부족관절학회지

PURPOSE: Calcaneal lengthening osteotomy is one option for the treatment of symptomatic flexible flatfoot in adults. The aim of the study was to evaluate the short term clinical and radiologic results and analyze its complications. MATERIALS AND METHODS: Twelve feet who had undergone calcaneal lengthening osteotomy without flexor digitorum longus transfer between December 2009 and July 2011 were included. The mean age was 40.6 years (23~75 years). The mean follow-up was 17.3 months (13~25 months). Clinical outcome were assessed using American Orthopadics Foot ans Ankle Society (AOFAS) score and visual analogue scale (VAS) for pain. Four radiologic parameters were measured from weightbearing radiographs to evaluate the difference between preoperatively and postoperatively measures. To analyze the complications, calcaneocuboid joint subluxation and degenerative change were measured postoperatively. RESULTS: The mean AOFAS score improved from 55.3 points preoperatively to 82.2 points at lastest follow-up (p=0.000). The mean VAS improved from 6.3 points preoperatively to 3.2 points postoperatively (p=0.002).All radiologic parameters, the mean talonavicular coverage angle on AP view, the mean talo-1st metatarsal angle on AP and lateral view and the mean calcaneal pitch angle, significantly improved after calcaneal lengthening osteotomy. Nine feets (75%) were shown the degenerative change in the calcaneocuboid joint at latest follow-up radiographs. CONCLUSION: Calcaneal lengthening osteotomy for the symptomatic flexible flatfoot in adults produced significant improvement in clinical and radiologic parameters, but calcaneocuboid joint osteoarthritis occurred postoperatively remained a major problem.

Surgical Treatment for Planovalgus Foot in Children with Generalized Ligamentous Laxity / 대한정형외과학회잡지

PURPOSE: Planovalgus deformity in children with generalized ligamentous laxity is usually asymptomatic, but it sometimes causes severe deformity and functional problems. The aim of this study was to evaluate, post-operatively, functional outcomes, plantar pressure and radiographic results of symptomatic planovalgus with generalized ligamentous laxity. MATERIALS AND METHODS: This retrospective study included a total of 42 feet of 24 patients that had undergone a calcaneal lengthening osteotomy or an extra-articular subtalar arthrodesis. The mean age of the patients at the time of the index operation was 10.5 years (range, 6-15.6 years), and the mean duration of follow-up was 51 months (range, 18-92 months). Patients were evaluated clinically and radiographically using the Oxford Ankle Foot Questionnaire, AOFAS score, Mosca criteria, standard radiographs and dynamic pedobarographs. RESULTS: Functional outcomes at the latest available follow-up were excellent except for three feet. No foot had a significant limitation affecting the patient's daily activities. Both surgical treatments improved radiographic parameters. The parameters of dynamic pedobarographs, including the relative vertical impulse and the peak pressure, decreased for the medial aspect of the forefoot and midfoot, while they increased for the lateral aspect of the forefoot, midfoot and calcaneus after surgical treatment. The change in the center of pressure indicated a significant lateral shift in the weight-bearing surface of the foot. CONCLUSION: Calcaneal lengthening osteotomy and extra-articular subtalar arthrodesis appear to be effective means for pain relief and clinical improvement in children with symptomatic planovalgus deformity and generalized ligamentous laxity. Further follow-up evaluation is needed to obtain long-term clinical and radiographic results with regard to skeletal maturation and changes in generalized ligamentous laxity.