Revision Arthroplasty Hinged Knee Replacement
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Right in revision surgery components with longer stems fit more securely into the bones and provide stability.
Revision arthroplasty hinged knee replacement. Rotating knee replacement implants are a choice for total knee replacement surgery a procedure done to replace worn out cartilage of the knee joint with a metal and plastic implant development is constantly taking place to design a knee replacement implant that will be both reliable and last a long time. Obq13 44 a 65 year old man presents with aseptic loosening 3 years after total knee arthroplasty. Management of bone defects in revision total knee arthroplasty. Left in this x ray the primary knee replacement implant is unstable due to weakened bone.
Hinged knee replacement in revision arthroplasty. Karpinski mr grimer rj. Over time scar tissue bone loss and instability can all contribute to making a repeat surgery a much more difficult treatment. On clinical examination 23 had good 48 fair and 29 poor results.
The surgeon reviews radiographs of his knee and takes him to the operating room for revision total knee arthroplasty. There was an infection rate of 4. Daines bk dennis da. Knee revision surgery which is also known as revision total knee arthroplasty is a procedure in which the surgeon removes a previously implanted artificial knee joint or prosthesis and replaces it with a new prosthesis knee revision surgery may also involve the use of bone grafts.
Revision knee replacement is a major surgery because performing a replacement surgery can be much more complicated the second or third or fourth time in the joint. During surgery the exposure technique shown in figure a is used. Instr course lect 2013. Purpose to evaluate the clinical and radiographic results of revision arthroplasties in tkas with instability using a rotating hinge design in elderly patients.
The patients were followed for a mean of 44 7 months. Fifty two stanmore hinged knee replacements were used as revision arthroplasties for failed arthroplasties. The bone graft may be an autograft which means that the bone is taken from another site in the patient s own. In view of the poor results and the advent of a new generation of knee arthroplasty devices hinged knee implants may have only a limited place in revision arthroplasty.
Two patients exhibited radiologic evidence of loosening but at the latest follow up examination no patients had clinical evidence of loosening.
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