Recurrent Inflammation on the Hand due to a High Pressure Injection of Urethane : A Case Report / 대한정형외과학회잡지

We describe a case of a high-pressure polyurethane injection injury to the hand, and discuss how its management differs from other injection injuries. A male patient was transferred to our hospital due to persistent purulent discharge from the 2nd finger, which began 15 days after the injury. The injected foreign body, polyurethane, could not be recognized by the patient and was not indicated radiographically. During surgery, the polyurethane foam was removed. The patient had no functional impairment 24 months after surgery.

Treatment of Displaced Supracondylar Fracture of the Humerus in Children

PURPOSE: To evaluate the radiological and clinical outcomes after operative treatment of displaced supracondylar fractures in children with lateral K-wire fixation. MATERIALS AND METHODS: 69 displaced supracondylar fractures treated by closed reduction and percutaneous lateral K-wire fixation were included in this study. Carrying angle and range of motion were measured and graded by the Flynn criteria. To assess the accuracy of the reduction, Baumann angle and lateral humerocapital angles were compared to the contralateral side, and to evaluate the stability of fixation both measurements were taken immediately postoperatively and after K-wire removal. RESULTS: 55 cases (80%) were categorized as excellent and 12 cases (17%) as good. There were no significant statistical differences in Baumann angle and lateral humerocapital angle between postoperative and K-wire removal. Although there were 9 cases that showed differences in Baumann angle and 32 cases in lateral humerocapital angle of more than 10 degrees compared to the opposite side at the immediate postoperative radiograph, 9 cases showed satisfactory clinical results. CONCLUSION: Closed reduction and lateral K-wire fixation is considered as an acceptable modality of the treatment of displaced supracondylar fractures in children, and clinical outcome is more closely correlated with carrying angle and stability of fracture site rather than rotational deformity or hyperextension of fragment measured radiographically.

The Risk Factors Associated with Hip Dislocation after Total Hip Replacement

Purpose: Dislocation is the second most common cause of failure, after implant loosening, in revisional THA (Total hip arthroplasty), and its evaluation and treatment still remain controversial issue. This study was undertaken to evaluate the risk factors after THA using the posterolateral approach and posterior soft tissue repair. Materials and Methods: Between January 1998 and May 2003, 211 consecutive primary total hip replacement arthroplasties using the posterolateral approach and posterior soft tissue repair were performed by the same surgeon. To compare the dislocation groups (6 cases) with the non-dislocation groups (205 cases), we randomized 120 of the non-dislocation cases. The risk factors for hip dislocation were categorized into patient factors and surgical factors. Patient factors included gender, age, preoperative diagnosis, underlying systemic disease, and alcoholic history. Surgical factors included position of the component (acetabular version and inclination, femoral anteversion), leg length discrepancy, and sum of anteversions of the cup and stem. Their parameters were measured on postoperative radiographs. Statistics were performed with Fishe`s Exact test and T test. Results: Dislocations occurred at an overall incidence rate of 2.8% (6/211cases). There were 4 (1.9%) cases of anterior dislocations and 2 (0.9%) cases of posterior dislocations. Dislocations occurred on average at postoperative day 6.1 and all dislocated hips were reduced with the closed method, except for one case that was treated surgically. There was no statistical significance in patient factors between the two groups, except for neurologic disease and alcoholic history. However, the sum of the acetabular and femoral anteversions in the anterior dislocation group was larger than that of the non-dislocation group by approximately 19 degrees. Conclusion: Our results demonstrated that by using the posterior approach and repair of soft tissue, the posterior dislocation rate after total hip replacement arthroplasty can be reduced and the sum of the acetabular and femoral anteversions had more influence on dislocations after THAs than did either anteversion alone.