Combined First Metatarsal and Calcaneal Osteotomy for Fixed Cavovarus Deformity of The Foot / 대한족부족관절학회지

PURPOSE: The aim of this study was to evaluate the result of combined first metatarsal and calcaneal osteotomy for static cavovarus deformity of the foot. MATERIALS AND METHODS: We performed a dorsal closing wedge 1st metatarsal osteotomy and a lateral and upward displacement calcaneal osteotomy for 9 patients, 12 feet (6 male and 3 female). The mean age at the time of operation was 37 years and the mean followup period was 27 months. The causes of deformity were 2 poliomyelitis, 1 cerebral palsy, 1 Charcot-Marie-Tooth disease and 5 idiopathic type. Five lateral ligament reconstructions of the ankle and six percutaneous Achilles tendon lengthenings were added. The surgical results in terms of pain, function and alignment of the foot were evaluated by means of AOFAS ankle-hindfoot score and talo-1st metatarsal, calcaneus-1st metatarsal and calcaneal pitch angles were checked with weight bearing radiographs in lateral projection. RESULTS: Talo-1st metatarsal and calcaneal pitch angles were reduced from the mean preoperative values of 21degrees and 25degrees to 12degrees and 19degrees, respectively, at last followup. Also, calcaneus-1st metatarsal angle was increased from the mean 114degrees to 144degrees. The mean AOFAS score was improved from 44.5 points preoperatively to 89.2 points at followup. There were 1 metatarso-cueiform joint nonunion, 1 sural nerve injury and 3 remaining symptomatic claw toes. CONCLUSION: Combined first metatarsal and calcaneal osteotomy appears to be an effective procedure for the treatment of adult static cavovarus foot.

Predisposing Factors and Treatment for the Fifth Proximal Metatarsal Fracture / 대한족부족관절학회지

PURPOSE: To evaluate clinical results of the 5th proximal metatarsal intraarticular fracture (Zone I) with displacement treated operatively and to evaluate predisposing factors of the 5th proximal metatarsal fracture (Zone I). MATERIALS AND METHODS: 11 patients treated for the 5th proximal metatarsal fracture (Zone I) operatively and 10 patients treated conservatively between Jan 2003 and Dec 2005, were followed for more than one year. Functions were graded by AOFAS foot scoring system and union time and postoperative complications were also evaluated. Calcaneal pitch angle was also evaluated. RESULTS: Clinically there were no much difference in results. Clinical points were 94.5 in the operative group and 92.3 in the conservative group. At the last follow-up, the radiographic results showed union in all cases. During the follow-up period, there were no significant complications. But in the conservative group, displaced fracture with calcaneal pitch angle over 30 degree tends to show delayed union and time to loss of pain tends to be prolonged. CONCLUSION: Calcaneal pitch angle is thought to predisposing factor for 5th metatarsal base fracture. Operative treatment is viable option for the 5th proximal metatarsal intraarticular fracture with displacement and with calcaneal pitch angle over 30 degree. In cases of cavovarus foot deformity, we think operative treatment should be considered with deliberation and long term follow-up study for peroneal tendinopathy should be needed.