Prognostic Factors in Outcome of Operative Treatment of Achilles Tendon Rupture / 대한정형외과학회잡지

PURPOSE: The purpose of this study is to assist the optimal placement of sacroiliac screw by evaluating the anatomic and radiologic features of upper sacrum. MATERIALS AND METHODS: Fourteen fresh-frozen cadaveric pelvises and 13 normal adults were studied for the evaluation of morphology of first sacrum and dysplastic patterns. Measurement of anatomic parameters and CT imaging of pelvis were performed. Thirty-two patients with complicated pelvic fracture were evaluated for detection of variations in the sacral alar anatomy and slope found in upper sacral segmentation. RESULTS: The mean distance between midpoint of sacrum and sacroiliac joint was 52.75 mm. The height of first sacral body was 21.71 mm. The longest antero-posterior distance in sacral alar was 52.36 mm. The mean angle between the coronal plane of S1 vertebra and anterior aspect of the alar was 29.3 degree. The mean angle between the superior aspect of S1 vertebral body and superior edge of the alar was 34.8 degree. The mean angle between the superior aspect of S1 vertebral body and supero-posterior edge of the alar was 12.5 degree. The studies revealed about 28 to 33% of cases as dysplastic sacrum. CONCLUSIONS: We studied anatomic and radiologic features of upper sacrum in cadaveric and clinical cases to gain information on the optimal placement of sacroiliac screw.

Treatment Using Unreamed Intreamedullary Nailing for Closed and Open Tibial Fractures / 대한정형외과학회잡지

PURPOSE: The purpose of this paper was to evaluate the treatment results according to bone union, union time, and complications, including infection of unreamed nailing of tibial fractures between closed and open fractures. MATERIALS AND METHODS: We reviewed 64 tibial shaft fractures that were treated with unreamed tibial nail. These included 42 closed fractures and 22 open fractures. RESULTS: Average union time of closed fractures was 19.8 weeks and that of open fractures was 20.2 weeks, nonunion rate were 4/42 and 3/22 in closed and open fractures. Average union time were 19.2, 20.4, 21.3 weeks in open grade I, II, llla fractures. According to the type of fractures, average union time were 18.5, 20.2, 24.6 weeks and nonunion rate were 2/29, 3/26, 2/9 in type A, B, C fractures. According to the level of fractures, average union time were 20.0, 20.3, 19.4 weeks and nonunion rate were 1/5, 4/37, 2/22 in proximal, middle, and distal fractures. There was no significant differences in average period of radiologic union, infection rate and nonunion rate between closed and open fracture group, but longer union time and higher nonunion rate in complex and comminuted fractures (P<0.05). CONCLUSIONS: We consider unreamed intramedullary nailing in the tibial shaft fractures as a good treatment modality for closed and open grade I, II, IIIa fractures