Adult cuboid anatomy and surgical treatment of cuboid compression fractures
Gao Yan1, Du Xiaojian1, Zhang Ling2, Zhang Wenlong1, Chen Jianghua1, Liu Hongda1, Yan Rongliang1
1Department of Foot and Ankle Surgery, the Second Hospital of Tangshan, Tangshan 063000, China; 2Department of Burn and Plastic Surgery, the People's Hospital of Tangshan,Tangshan 063000, China
Abstract:Objective This study aimed to explore the anatomical characteristics of adult cuboid bone and summarize the treatment of the compression fracture of cuboid bone.Methods The anatomy and the characteristics of the cuboid bone were evaluated using the anatomy of five fresh frozen human foot specimens. The clinical data of 78 cases (78 feet) of adult cuboid compression fracture admitted to Tangshan Second Hospital from May 2009 to May 2016 were analyzed retrospectively. The patients included 70 males and 8 females, an mean age of 38.8 years (19-64 years). The time from injury to admission was 2-72 h (mean 8.5 h). Five patients (5 feet) refused the operation and were treated conservatively by using external fixation via a plaster under the knee. The remaining 73 patients (73 feet) underwent open reduction and internal fixation, and 58 patients (58 feet) underwent bone graft. The postoperative observation of fracture healing, foot pain, and swelling was conducted. A year after the operation, the foot function was evaluated in accordance with the American Orthopedic Foot and Ankle Society (AOFAS) standard.Results The anatomical observation of the cuboid showed that the medial side of the cuboid was long and that the lateral side was short, mainly cancellous bone. The cuboid bone was mainly connected with the 4th and 5th metatarsus base, the 3rd cuneiform bone and the calcaneus, protected by strong ligament tissue. A long peroneal tendon, the third peroneal tendon, a short peroneal tendon, and the third cuneiform bone block were observed on the lateral, dorsal, metatarsal, and medial sides, respectively, of the cuboid. A total of 78 cases (78 feet) of cuboid compression fracture were followed up for 2-9 years (mean 33 months). Five cases (5 feet) were treated conservatively, and the deformity healed 6-8 weeks after the injury. Among the remaining 73 patients, 9 cases (9 feet) had inadequate reduction and malunion 6-8 weeks after the operation, whereas 64 cases (64 feet) had sufficient reduction 8-12 weeks after the operation. During the follow-up period, no complication, such as osteoarthritis, foot lateral column shortening, and obvious pain, in the cuboid bone occurred. One year after the operation, the score was 75-97 points (mean=93.5 points) on the basis of the AOFAS standard. In accordance with the score, the foot function was evaluated in 64 excellent (64 feet) and 14 good (14 feet) cases.Conclusions The anatomical characteristics of cuboid compression fracture are understood through the anatomical observation of fresh human foot specimens, for the treatment of compression fracture of the cuboid bone has clinical guiding significance. For the closed compression fracture of the cuboid bone, the “bridge-type” internal fixation method with miniplate has achieved a good clinical effect.
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