2017 ISAKOS Biennial Congress ePoster #134
The Medial Displacement Calcaneal Osteotomy with Mini-Open Incision for the Treatment of Acquired Flexible Flatfoot
Yuan Bao, MD, Chongqing, Chongqing CHINA
Kanglai Tang, MD, PhD, Prof., Chongqing, Chongqing CHINA
Department of Orthopedic Surgery, Southwest Hospital, Third Military Medical University / COA National Training Center for Foot and Ankle Surgeon, Chongqing, Chongqing, CHINA
FDA Status Cleared
Summary
To investigate the clinical outcomes of medial displacement calcaneal osteotomy with mini-open incision for the treatment of acquired flexible flatfoot.
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Abstract
Objective
To investigate the clinical outcomes of medial displacement calcaneal osteotomy with mini-open incision for the treatment of acquired flexible flatfoot. Methods From 2005 to 2009, 10 patients(13 feet) of acquired flexible flatfoot, with heel obviously valgus, underwent the medial displacement calcaneal osteotomy with mini-open incision. The lateral skin incision of 3.0-4.5cm was made to explore the lateral calcaneal wall. Calcaneal osteotomy was performed from inferior and lateral to superior and medial, perpendicular to the longitudinal axis of calcaneal body. The distal segment is displaced medially for 1/3-1/2 width of calcaneal body and held by two parallel cannulated screws. All patients were evaluated at pre-op, post-op of 6 weeks, 3 months, 6 months, 12 months, and every 6 months by clinical exam and radiology. All patients were physically examined with an extended protocol of questionnaires and the American Orthopaedic Foot and Ankle Society (AOFAS) Ankle and Hindfoot Scales. The lateral view of the full foot allows assessment of the bone healing, calcaneus inclination angle(CI), talocalcaneal angle (TC), talar first metatarsal angle (TMT). The AP view of the full foot allows assessment of the talocalcaneal angle (TC), talar first metatarsal angle (TMT). The heel varus/valgus alignment can be evaluated on axial radiographs of the hindfoot. Results All patients, with mean postoperative follow-up period of 20.3months (range 7–55 Ms), were proved be bone union by clinical exam and radiology. The AOFAS rating scale improved from a mean of 50.3 before operation to a mean of 80.2 at 6 months, a mean of 84.2 at last follow-up, without any complication of infection, nerve injure, and so on. Radiographically, all parameters were statistically significant (p < 0.001), including the CI, TC and TMT on the lateral view and TC and TMT on the AP view. The heel varus/valgus of all patients were corrected on the axial view?Conclusion The medial displacement calcaneal osteotomy with mini-open incision is a recommended procedure for the treatment of acquired flexible flatfoot, with good clinical outcomes, correction of deformity, few complication.
Key words: Calcaneal;Osteotomy;Mini-Open Incision;Acquired Flexible Flatfoot