Pelvic Insufficiency Fracture in Severe Osteoporosis Patient / 대한고관절학회지

PURPOSE: To evaluate clinical features and the effect of parathyroid hormone (PTH) on treatment outcomes of patients with pelvic insufficiency fractures. MATERIALS AND METHODS: Fifteen patients diagnosed with pelvic insufficiency fractures were evaluated retrospectively. All patients had osteoporosis with mean lumbar T score of −3.9 (range, −3.1 to −6.4) and the mean age was 76.5 years. In all cases, simple radiography and computed tomography was used for final diagnosis; additional magnetic resonance imaging and technetium bone scans were used to confirm the diagnosis in 2 and 6 patients, respectively. Initial conservative treatment was used in all cases; treatment with PTH was applied in 5 cases. Radiological follow-up was done every 4 weeks up to 6 months and every 3 months thereafter. Symptom improvement was measured using visual analogue scale (VAS) score. RESULTS: Fractures were located: i) sacrum and pubis (9 cases), ii) isolated sacrum (4 cases) and iii) isolated pubis (2 cases). One case showed fracture displacement and pain aggravation at 4 week follow-up which was treated with percutaneous sacro-iliac fixation using cannulated screws. Duration of bone union was significantly shorter in the patients who used PTH (P<0.05). VAS scores were also lower in the group treated with PTH; however, statistical significance was not reached. CONCLUSION: In patients with osteoporosis, a pelvic insufficiency fracture should be considered if pain is experienced in the pelvic area in the absence of major trauma. While nonoperatic has been shown to be sufficient for treatment, our study shows that PTH therapy shortens treatment period and could be a favorable treatment option.

Management of Displaced Intra-articular Calcaneal Fracture / 대한족부족관절학회지

Recently, open reduction and internal fixation has been the treatment of choice for displaced intra-articular calcaneal fractures for many orthopaedic surgeons. However controversy still surrounds the optimal treatment with regard to whether displaced intra-articular calcaneal fractures should be treated operatively or conservatively. Conservative treatments include use of splint, rest, leg elevation, icing, use of analgesics and early mobilization. Operative treatment is open reduction and internal fixation, performed through an extensile lateral approach with interfragmentary screws and application of a neutralization plate. We reviewed the question of whether operative treatment by open reduction and internal fixation provides a benefit compared with conservative treatment for displaced intra-articular calcaneal fractures.

Three-Dimensional Volume Analysis of Partial Avascular Necrosis after Talar Neck Fracture / 대한족부족관절학회지

PURPOSE: The purpose of this study is to define the geographic patterns of partial avascular necrosis (AVN) of the talar body and to determine whether there were any predictors of both the location and occurrence of partial AVN. MATERIALS AND METHODS: Nineteen patients with fracture of the talar neck treated by open reduction and internal fixation and followed up for more than 1 year were analyzed. The radiographs were examined 6 to 8 weeks after the operation for Hawkins sign and if it was not observed, magnetic resonance scans were performed. The three-dimensional analysis was performed using Mimics 17.0 (Materialise). The incidence of collapse and time to operative intervention was recorded. RESULTS: Partial AVN of the talar body was observed in six out of 19 patients. The avascular segment of the talar body was located predominantly in the anterolateral portion. The average volume of the avascular segment was 289 mm3, and it occupied 1% of total volume of the talus, and 10% of the talar dome. Collapse occurred in one patient in the area of the avascular process. There were no observable trends with regard to Hawkins classification, incidence of collapse, or time to operative intervention to the location of the avascular segment. CONCLUSION: Partial AVN can occur after fracture of the talar neck. The predominant location of the avascular segment was the anterolateral portion of the talar body. This information may be helpful to understanding the process of avascular necrosis of the talar body.

The Result of Open Reduction and Mini-Plate Fixation for Displaced Talar Neck Fracture

PURPOSE: We evaluated the complications, radiological and clinical results after operative treatment using a mini-plate for fixation of displaced talar neck fractures. MATERIALS AND METHODS: There were 20 cases of displaced talar neck fractures from May 2006 to December 2011; we performed a retrospective chart review of 15 patients treated by open reduction and internal fixation using a mini-plate who had more than 2 years of follow-up. According to Hawkin's classification, there were 7 cases of type II fractures and 8 cases of type III fractures. During postoperative 12-16 weeks we checked magnetic resonance imaging. The assessment of clinical results was based on the American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot scale. RESULTS: Mean union period was 11.6 weeks (10-15 weeks). Nonunion and malunion did not occur in all cases. The mean AOFAS score was 88.2 points (80-97 points). There were 5 cases of avascular necrosis. Of these, there were 3 cases of body collapse and 4 cases of post-traumatic arthritis. In the statistical analysis, there was no correlation between the elements including gender, Hawkin's classification and union rates and clinical results. CONCLUSION: Mini-plate fixation of a displaced talar neck fracture is thought to be a good technique, with a low rate of malunion and also showed satisfactory results in radiological and clinical assessment.

Effect of Intravenous Administration of Bisphosphonate for Patients Operatively Treated for Osteoporotic Hip Fracture / 대한고관절학회지

PURPOSE: We evaluated changes in bone mineral density and biochemical bone turn over markers resulting from intravenous administration of zoledronic acid for the purpose of increasing bone mineral density and decreasing bone turnover rate in patients who had received operative treatment after hip fracture. MATERIALS AND METHODS: We carried out a retrospective study of 34 patients who had received injections of zoledronic acid after surgical treatment for hip fracture from January 2009 to June 2010, with a follow up period of more than one year. We evaluated pre and post T-scores of DXA in spine, proximal femur and femoral neck along with biochemical bone metabolic markers, and we then analyzed each factor. RESULTS: T score was enhanced in all cases with pre T-score -4.2 and post T-score -3.3 revealing statistical significance (P<0.05). In addition, two biochemical bone turnover markers were observed to decrease in most patients. Three days after drug administration, 7 patients(20.6%) had minor adverse effects. There were no serious complications such as atrial fibrillation. CONCLUSION: No major adverse effects were observed, only minor ones in patients who had been injected with zoledronic acid for the prevention of osteoporotic fracture after surgical treatment for hip fracture. We confirmed the affirmative effects on changes in bone mineral density and biochemical bone turn over markers associated with the use of this drug.

A Case of Localized Tenosynovial Giant Cell Tumor in the Infrapatellar Fat Pad of the Knee

Localized giant cell tumor of the tendon sheath (GCTTS) usually occurs in extensor an tendon sheath of the fingers and toes. It has rarely been observed in the fat pad of the knee joint. We treated a case of a 2.5x3x4 cm mass arising from the infrapatellar fat pad, which presented with extension limitation and knee pain due to lateral femorotibial joint impingement. The tumor was successfully treated using arthroscopic excision with a motorized shaver. Histologic findings were diagnosed as localized GCTTS. Herein we report this case with a literature review.

Two Staged Surgical Treatment of Post-Traumatic Severe Ankle Equinus Deformity: Preliminary Report / 대한족부족관절학회지

PURPOSE: To evaluate the effectiveness as well as correct the post-traumatic severe ankle equinus deformity by conducting the treatment surgery, which is divided into 2 stages, soft tissue adhesiolysis and ankle arthrodesis. MATERIALS AND METHODS: We have conducted the methods, which are Z-plasty Achilles tendon lengthening, multiple capsulotomy and tendon lengthening (flexor hallucis longus muscle, flexor digitorum longus, posterior tibialis tendon) for 10 patients who has shown equinus deformity after post-traumatic compartment syndrome due to the injury. The average age of patients was 33.7 year-old; there were 8 men and 2 women, and the follow up period was 13 months (6~31 mon). Outcomes were rated based on American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot score, Visual Analogue Scale (VAS) and patient's satisfaction after operation. RESULTS: The average degree of preoperative equinus deformity was 64 degree (-60~-70), and we've obtained AOFAS anklehindfoot score that was evaluated after 4 months of 2nd operation which was 76.7 score on average. We've also checked the decreased pain score from all of the patients according to the fact that the average VAS before the surgery was 6 (4~8), but it reduced to 3 (1~4). The patient's satisfaction showed generally great satisfactions which was 5 cases were excellent, 2 cases were good, and 3 cases were fair. CONCLUSION: The two staged surgical treatment of post -traumatic severe ankle equinus deformity, which was conducted of soft tissue adhesiolysis and arthrodesis, could be one of the effective methods to improve patients walking ability.