Archives of orthopaedic and trauma surgery
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Arch Orthop Trauma Surg · Jan 2014
Core decompression in combination with nano-hydroxyapatite/polyamide 66 rod for the treatment of osteonecrosis of the femoral head.
The aim of this study was to investigate the effectiveness of core decompression in combination with a nano-hydroxyapatite/polyamide 66 (n-HA/PA66) rod and a porous bioglass bone graft for the treatment of osteonecrosis of the femoral head (ONFH). ⋯ Core decompression combined with the implantation of a n-HA/PA66 rod and a bioglass bone graft can significantly decrease hip pain, improve hip function, and prevent the collapse of the femoral head in patients with ONFH. As the effectiveness of this approach appears to vary with Steinberg stage, we suggest that this treatment procedure may be suitable for patients with early to middle stage ONFH.
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Arch Orthop Trauma Surg · Jan 2014
Alteration of the patellar height following total knee arthroplasty.
Patellofemoral related complications after total knee arthroplasty (TKA) remain clinically relevant. The hypothesis of the present study was that the patellar height changes more than 10% of its preoperative height after TKA. Possible influences of age, gender, side and navigation system on patellar height were evaluated separately in subgroups. ⋯ The present study demonstrates that TKA leads, at 1 week and 1 year follow-up, to patellar height alteration more than 10% in a significant number of knee joints. However, with the use of ISI and MIS the changes of patellar height did not exceed the defined thresholds to be classified as patella alta or baja.
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Arch Orthop Trauma Surg · Jan 2014
Effect of preoperative limb-length discrepancy on abductor strength after total hip arthroplasty in patients with developmental dysplasia of the hip.
Limb-length discrepancy (LLD) arising from hip subluxation or dislocation and accompanied by insufficiency of hip abductor in patients with developmental dysplasia of the hip (DDH) can be corrected partially or completely with total hip arthroplasty (THA). However, information about post-THA changes in abductor strength related to preoperative LLD in patients with DDH is lacking. We aimed to explore the post-THA recovery course of abductor muscle strength and its related factors in patients with DDH. ⋯ Patients showed the greatest improvement in abductor strength within the first 6 months after THA, especially during the first 3 months. Abductor strength was consistently greater in patients with mild dysplasia than in patients with severe dysplasia. The extent of preoperative LLD and the increase in abductor length were related with post-THA abductor strength recovery in patients with DDH.
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Arch Orthop Trauma Surg · Jan 2014
Diabetes mellitus increases the incidence of deep vein thrombosis after total knee arthroplasty.
Many patients undergoing total knee arthroplasty (TKA) have diabetes mellitus, which may increase the risk of deep vein thrombosis (DVT) after TKA. We therefore assessed whether diabetes mellitus increased the incidence of DVT within 14 days after TKA. ⋯ The incidence of DVT 14 days after TKA was significantly higher in patients with than without diabetes.
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Arch Orthop Trauma Surg · Jan 2014
Case ReportsPubic ramus convexity or ballooning: a sentinel sign for severe periacetabular osteolysis in total hip arthroplasty.
Osteolysis is a significant long-term problem in hip arthroplasty. Plain radiographs are the routine investigation of choice for monitoring hip arthroplasty patients; however, the recognition of clinically significant osteolysis can be challenging. ⋯ Both patients subsequently displayed massive pubic osteolysis at the time of revision surgery. We suggest that the presence of convexity of the ilio-pectineal line/superior pubic ramus indicates established pelvic osteolysis.