Purpose: A rapid and accurate reduction is important for hip dislocated patients to avoid various potential complications, including avascular necrosis of the femoral head. We analyzed hip dislocation cases, ones that particularly failed during the primary reduction trial. Results:The rate of first reduction failure was higher, with statistical significance, in patients aged under 50 years, male gender, and those with combined around hip fractures, including femoral head and acetabular fracture (p<0.05). In particular, the presence of impacted fracture fragment in the hip joint and large size of the impacted fracture fragment was highly related to the failure of second closed reduction trial requiring open reduction. Conversely, the method of reduction, Thompson-Epstein classification, Pipkin classification were not related to the failure of closed reduction statistically (p>0.05). Conclusion:To evaluate the patients with hip dislocation, realizing the type of dislocation, presence of accompanied fracture, location and size of fracture fragment, age, as well as gender of patients is important. If the fracture fragment is impacted in the hip joint and the size of the fragment is large, then the operative treatment is considered, rather than the repetitive trial of closed reduction by constraint.

Purpose: The purpose of this study was to analyze the influence of posterior tibial slope on stability in clinical and second-look arthroscopic evaluation after anterior cruciate ligament (ACL) reconstruction. Materials and Methods: From 2000 to 2011, 124 patients who underwent ACL reconstruction using an allogaft were enrolled in this study. A posterior tibial slope between 0 o and 4 o was found in 28 patients (group A), between 5 o and 9 o in 64 patients (group B), and greater than 10 o in 32 patients (group C). We evaluated stability using the Lachman test and a KT-2000 arthrometer. In second-look arthroscopy, grafted tendons were evaluated based on the tension, rupture, and synovial coverage. Results: In clinical evaluation for stability, mean KT-2000 arthrometer and Lachman test at last follow-up showed no statistically significant differences depending on posterior tibial slope. Second-look arthroscopic findings showed no statistically significant difference between groups A and B (p=0.91). However, statistically significant relations were observed between groups A and C (p=0.03), and between groups B and C (p=0.02). Conclusion:The results of this study suggest that patients who underwent ACL reconstruction with higher posterior tibial slope (≥10 o ) have more lax tension in second-look arthroscopy, but not in clinical stability tests.

There was no statistically significant difference in radiologic and clinical results between group A and B, but the number of tibial varus/valgus mismatch case were fewer in fluoroscope guided group. Sowe consider that thefluoroscope is helpful for tibial cuttingin unicompartmental knee replacement arthroplasty.