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Disassembly of threaded junction between stem extension and femoral component in a total stabilizer revision total
Su Chan Lee1, Chang Hyun Nam1, Kwang Am Jung1
1Joint & Arthritis Research, Department of Orthopaedic Surgery, Himchan Hospital, Seoul, Republic of Korea.
Abstract:
We report an unusual case of disassembly of threaded junction between stem extension and femoral component in a 6-year-old total stabilizer revision total knee arthroplasty. Aseptic loosening of femur component will tend to cause increased stresses at the stem-condylar junction of a modular femoral prosthesis, especially if femur component is flexed. The modular junction may therefore be unable to withstand the concentrated force and lead to disassembly.
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