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The modified Palmer lateral approach for calcaneal fractures: wound healing and postoperative computed tomographic evaluation of fracture reduction.
Foot & Ankle International 2003 October
In 32 consecutive intra-articular calcaneal fractures (28 patients, 4 bilateral), open treatment was done using the modified Palmer lateral approach and the reduction was assessed with postoperative radiography and computed tomography (CT) (coronal and axial images, 1-2 days after surgery). Retrospective analysis of the available radiographs and CT scans was done in 27 fractures (25 patients, 2 bilateral) to assess accuracy of reduction achieved; in five fractures the studies were not available. Sanders classification was type I in 2 (7%), type II in 20 (74%), and type III in 5 (19%) fractures; the calcaneocuboid joint was involved in 9 (33%) fractures. Reduction included elevation of the depressed lateral side of the posterior facet, reduction of the neck (anterior third of calcaneus) to the body (middle third of calcaneus), realignment of the posterior tuberosity, and reduction of lateral wall blowout; internal fixation was done with cannulated screws. Mean (+/-SD) values of the following displacement parameters were significantly improved after surgery: Böhler's angle, posterior facet angle, lateral posterior facet articular depression, heel width (coronal CT), and calcaneal height. There was no significant difference between preoperative and postoperative values of mean angle of Gissane, posterior tuberosity position, and body width and length on axial CT. One (3%) of the 32 fractures was associated with preoperative (traumatic) full-thickness skin necrosis at the sinus tarsi that required free muscle flap coverage. One (3%) postoperative wound healing complication occurred, consisting of wound dehiscence and drainage at the central portion of the surgical wound in a smoker, which resolved with dressing changes and antibiotics. In conclusion, the modified Palmer lateral approach enabled open reduction of major features of calcaneal fractures with less soft-tissue risk than more extensile approaches.
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