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KMID : 1144520230350010005
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Knee Surgery & Related Research
2023 Volume.35 No. 1 p.5 ~ p.5
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The additional tibial stem extension is not mandatory for the stability of 5 mm metal block augmented tibial prosthesis construct in primary total knee arthroplasty: 5-year minimum follow-up results
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Jeon Hye-Joo
Kim Yeong-Hwan
Choi Choong-Hyeok
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Abstract
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Purpose : To determine whether additional stem extension for stability is necessary, we performed mid-term follow-up of patients who had been managed with 5-mm metal block augmentation for a tibial defect, where tibial prosthesis was fixed using bone cement without stem extension. Also, we evaluated clinical and radiologic results including survival rate of patients without stem extension.
Methods : We retrospectively analyzed patients with tibial bone defect, had undergone primary total knee arthroplasty, and had been treated with 5-mm metal block augmentation without stem extension between March 2003 and September 2013. Among 74 patients (80 cases), 47 patients (52 cases) were followed up for at least 5 years.
Results : Mean flexion contracture improved from 8.8° (0?40°) preoperatively to 0.4° (?5° to 15°) at final follow-up (P?
Conclusion : When performing 5-mm metal block augmentation for a proximal tibial defect, no additional tibial stem extension can be a good surgical option for the stability of tibial prosthetic construct and mid-term clinical and radiologic results.
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KEYWORD
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Primary total knee arthroplasty, Bone defect, 5-mm metal augmentation, Stem extension
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