ObjectiveTo compare the clinical results between percutaneous poking reduction fixation and open reduction and internal fixation for the displaced Sanders Ⅱ type calcaneal fractures. MethodsA retrospective analysis was made on the clinical data of 122 patients with Sanders Ⅱ type calcaneal fractures between May 2007 and May 2012, who accorded with the inclusion criteria. The closed reduction and percutaneus Kirschner wire fixation were used in 61 patients (closed group), and open reduction and internal fixation were used in 61 patients (open group). There was no significant difference in gender, age, fracture side, weight, height, body mass index, the causes of injury, the fracture type, B?hler angle, Gissane angle, and the time from trauma to operation between 2 groups (P>0.05). The operation time, intraoperative blood loss, hospitalization days, wound complications, fracture healing time, American Orthopaedic Foot and Ankle Society (AOFAS) score, and radiographic results were compared between 2 groups. ResultsThe operation time, intraoperative blood loss, and hospitalization days in closed group were significantly less than those in open group (P<0.05). There was no deep infections in both group; wound dehiscence, skin flap necrosis, and wound infection occurred in 3 patients, 2 patients, and 1 patient of the open group, no wound complication happened in closed group, and there was significant difference in the incidence of wound complications between 2 groups (P=0.027). The patients were followed up 24-68 months (mean, 38.7 months) in the closed group and 26-66 months (mean, 38.7 months) in the open group. There was no significant difference in the fracture healing time between 2 groups (t=-1.562, P=0.121). The B?hler angle and Gissane angle at last follow-up were significantly improved when compared with preoperative angle in the closed group (t=-27.929, P=0.000; t=-26.351, P=0.000) and the open group (t=-32.565, P=0.000; t=-25.561, P=0.000), but there was no significant difference between 2 groups (P>0.05). AOFAS score showed no significant difference between 2 groups (t=-0.492, P=0.624). ConclusionFor the displaced Sanders Ⅱ type calcaneal fractures, the use of closed reduction and percutaneus Kirschner wire fixation or open reduction and internal fixation can both obtain satisfactory clinical function and radiographic results, but the former has the advantage of less trauma, shorter hospitalization time, and fewer wound complications.