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The patients were 40 females and 21 males with an average age of 74 (range, 54~99). We measured vertical and horizontal shortening in regard to age, sex, bone mineral density, neck-shaft angle, cancellous bone defect, and the existence of lessor trochanter fracture on postoperative 6 months. Results: The average vertical shortening was 4.1 mm (0~22 mm) and the average horizontal shortening was 7.3 mm (0~30 mm). Age, sex, bone density and neck-shaft angle were not significantly related with vertical and horizontal shortening (p>0.05). Vertical shortening was significantly greater in the group with cancellous bone defect and in the group without lesser trochanter fracture (p<0.05). Conclusion:Proper management for fracture site and fixation was needed to make it stable because the stable intertrochanteric fracture with cancellous bone defect and intact lesser trochanter could be induced into unexpected sliding.

Purpose:The purpose of the present study was to define the factors that affect the treatment and clinical result of displaced calcaneal fracture with use of the pre-operative and final follow-up computed tomography scanning. Materials and Methods: Present study included the 17 patients(18 feet) whom we performed surgery for displaced intra-articular calcaneal fracture at our institution between March 2000 and March 2002 and had a minimum follow-up of 12 months. For all patients, the Böhler's angle and posterior facet incongruity were measured with computed tomography pre-and post-operatively. The Creighton-Nebraska Health Foundation Assessment Scale for Fractures of the Calcaneus (CN scale) was used to evaluate the clinical results. Results: Of all eighteen fractures, the clinical results were excellent in three (16.6%), good in six (33.3%), fair in six (33.3%), and poor in three (16.6%). The Böhler's angle averaged 21°, 15°, 27°, 25° at final follow-up in each above clinical result group. The step-off averaged 1.0, 1.6, 3.9 and 6.0 mm and the average range of motion of the subtalar joint at final follow-up were 85, 76, 60 and 45% of normal. CT evaluation showed intra-articular screws in the posterior subtalar joint in three (16.6%) of the eighteen fractures but their average clinical result was good (80.3 points). Conclusion:The restoration of the congruity and range of motion of posterior subtalar joint are considered important factor that affect clinical result.