ABSTRACT
PURPOSE: We attempted to evaluate the effectiveness of the new modified Smith-Robinson bone graft method for performing cervical anterior interbody fusion. MATERIALS AND METHODS: Forty-two patients had anterior interbody fusion on the cervical spine, using an anterior approach and the new modified Smith-Robinson's method (NMSR), between September 2001 and June 2006. There were 30 males and 12 females, with an average age of 51.2 years and the mean follow up period was 39.5 months. We measured the area from C4 to C6 in 32 cases. This was compared with the contact area of the bone graft of the NMSR method and the Original Smith-Robinson method (OSR). We also checked the time to bone union and changes of Cobb's angle at the final follow-up to evaluate the effectiveness of the NMSR. RESULTS: Bony fusion was obtained in all cases. The average size of the OSR were 169 and 152 mm2, in the males and females respectively, whereas those of the NMSR were 263, and 228 mm2. Therefore, the average size of the NMSR increased to 94 mm2 and 76 mm2 than those of the OSR method in the males and females. The average time to radiological bone union was 9.6 weeks and the changes of Cobb's angle at final follow-up were 2.5+/-2.6degrees. CONCLUSION: The NMSR technique was a very effective method for cervical anterior interbody fusion. It could enlarge the bone graft size about 50-56% compared with the OSR technique. It also shortened the period of bone union and also increased the bone union rate.
Subject(s)
Female , Humans , Male , Follow-Up Studies , Spine , TransplantsABSTRACT
Reports of a traumatic pseudoaneurysm after total knee arthroplasty are quite rare. The authors encountered a case of a traumatic pseudoaneurysm after total knee arthroplasty. The pseudoaneurysm was treated successfully without the need for surgical intervention using transcatheter embolization. No recurrence of the hemarthrosis was observed in the patient after a follow-up of 12 months.
Subject(s)
Humans , Aneurysm, False , Arteries , Arthroplasty , Embolization, Therapeutic , Follow-Up Studies , Hemarthrosis , Knee , RecurrenceABSTRACT
PURPOSE: To evaluate the necessity of lateral translation and the primary stability of the fixation devices in a closed wedge high tibial osteotomy. MATERIALS AND METHODS: The authors studied four pairs of high tibial osteotomy: Pair I, lateral translation with blade plate fixation; Pair II, lateral translation with staple fixation; Pair III, no translation with blade plate fixation; Pair IV, no translation with staple fixation. Four models of bovine tibia were taken and analyzed for stress distribution at the osteotomy site under axial loading. After axial loading, information recorded in pressure sensitive film was transformed to image file. After, by using image analysis software, the mean stress value and maximum stress value was calculated. RESULTS: The mean stress calculated at each osteotomy site is as follows; 3.89 MPa in the first pair; 4.55 MPa in the second pair; 4.62 MPa in the third pair; and 4.67 MPa in the fourth pair. In Group I, stress value was distributed evenly. But in group II, III, IV, the stress was concentrated at posteromedial area of the osteotomy site. CONCLUSION: The primary in the high tibial osteotomy was dependent more on the rigid fixation than on the continuity of the medial cortex. The pairs on which blade plate fixation was used more stable than the pairs on which staple fixation was used regardless of lateral translation.
Subject(s)
Osteotomy , TibiaABSTRACT
Reports of popliteal artery rupture without severe knee trauma are rare. The authors have experienced one case of politeal artery injury without dislocation of the knee. Complete resection of ruptured portion of vessel was performed and end to end reanastomosis was done in this case. Then, circulation of limb recovered soon.