The Fixation Method according to the Fracture Type of the Greater Trochanter in Unstable Intertrochanteric Fractures Undergoing Arthroplasty / 대한고관절학회지

PURPOSE: We conducted a study on patients who underwent hip joint arthroplasty because of unstable femur intertrochanteric fractures with greater trochanter bony fragments. After dividing patients into three groups depending on their fracture patterns, we evaluated the clinical and radiological outcomes of different operation methods applied to each of these groups. MATERIALS AND METHODS: Using Evan's classification, we defined an unstable intertrochanteric fracture as those characterized as stage 4 or 5. Of the 137 patients presenting with an intertrochanteric fracture with osteoporosis (bone mineral density, <−2.5) between March 2014 and October 2015, 63 met the eligibility criteria and were included in this study. Next, patients were divided into three groups based on their greater trochanter fracture patterns (discerned with three-dimensional computed tomography images); different fixation methods were applied to each group by a single orthopaedic surgeon. RESULTS: Taken as a whole, 50 out of 63 patients experienced no reduction in walking distance in their daily lives. Harris hip score increased from 74.8 to 85.7 point and we considered this a relatively good result. Radiologically, we observed complete bone union in 62 cases (98.4%); the lone exception was in a patient who experienced osteolysis. There were also 3 cases who removed greater trochanter reattachment device due to broken implant and 1 case of dislocation. CONCLUSION: The different fixation methods applied to three distinct groups with varying fractures patterns were successful in achieving proper reduction and fixation of greater trochanteric fractures. We also observed reduced bone union periods when arthroplasty was performed in patients with unstable intertrochanteric fractures. Lastly, we believe these approaches may also aid in achieving early ambulation and early rehabilitations.

Birmingham Resurfacing Hip Joint Arthroplasty: Minimum 5 Year follow-up study

PURPOSE: We wanted to evaluate more than 5 years of the clinical follow-up results of Birmingham hip joint resurfacing arthroplasty. MATERIALS AND METHODS: 20 cases of Birmingham resurfacing arthroplasties were performed in 17 patients (8 males and 9 females) between August 2001 and April 2002. Eleven patients had avascular necrosis of the femoral head, nine had osteoarthritis and two had ankylosing spondylitis. All the patients could be followed-up and the mean age at the time of operation was 35.9 (range: 22~65) years. Clinical evaluation was done with using the Harrris hip score; the osteolysis, migration of the femoral component and acetabular cup, the presence of femoral neck fracture and the secondary changes around the components were evaluated according to the radiological follow up findings. RESULTS: The mean preoperative Harris hip score of 38 points was improved to 94 points at the time of the final follow-up. Complications developed in the avascular necrosis patients, in the two cases of femoral neck fracture and in one case of incomplete sciatic nerve palsy. There was no osteolysis or movement of the femoral cap, peg and acetabular cup on the radiological evaluation. Some degree of periacetabular osteoporosis and some change of the trabecular pattern were found in all cases due to the secondary change from mechanical stress. CONCLUSION: Birmingham resurfacing hip arthroplasty provided excellent clinical and radiological results, and especially in the osteoarthritis patients. Special concern might be needed for the patients with avascular necrosis of the femoral head and for protecting the sciatic nerve.

Metalosis por titanio. diagnostico diferencial de masa de compartimiento iliopssoas: caso clínico / Titanium metalosis. differential diagnosis of iliopssoas compartment mass: clinical case

An 52 year-old female patient with right hip joint Tuberculosis, received a Titanium total joint arthroplasty in 1991. Eleven years later, she presented low extremity swelling and inguinal mass, which was studied with ultrasound and computed tomography. The main differential diagnosis was an iliopsoas sarcoma, so an ultrasound-guided biopsy was performed. The result was Titanium particle debris. The lesion was removed, but it recurred, so that joint replacement was required. Joint Titanium particle wear debris a condition due to particle releaseis as an arthroplasty complication. When its clinical manifestation is a pelvic mass, the main differential diagnoses include tumors and granulomatous disease. Both clinical manifestations and the radiology are variable. This pathology in patient with hip joint Titanium arthroplasty must be consided.

Se presenta el caso clínico de una paciente de 52 años con diagnóstico de tuberculosis de cadera derecha a quien en 1991 se le instala prótesis de Titanio. Once años después presenta aumento de volumen de la extremidad inferior y masa palpable en zona inguinal. Fue estudiada con ultrasonografía y tomografía computada cuyos hallazgos se describen. Se planteó como diagnóstico diferencial principal un sarcoma en compartimiento iliopsoas por lo cual se realiza biopsia bajo ultrasonografía que demostró metalosis por Titanio diagnóstico que debe ser considerado en pacientes con masa inguinal y prótesis de cadera. Se reseca la lesión, la cual recidiva, requiriendo recambio articular.