The Value of Serial Postoperative Radiographs of Total Knee Arthroplasties

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ABSTRACT: In a prospective study of 35 cemented press fit condylar knees, we studied the prevalence of radiolucent lines 1 mm wide or wider using two methods of detection:  conventional (plain) and fluoroscopically-guided radiographs. All films were evaluated in  accordance with the Knee Society Total Knee Arthroplasty Roentgenographic Evaluation and  Scoring System. A total of 12 radiolucencies were detected in nine knees (26% of all knees)  using conventional radiographs versus 25 radiolucencies in 13 knees (37% of all knees) using  fluoroscopically- guided radiographs. This was a statistically significant difference and suggests that the true prevalence of periprosthetic radiolucencies will be underestimated if  conventional radiographs are used to evaluate the bone-prosthesis interfaces and questions the v alue of routine postoperative plain film radiographs to evaluate the results of knee  arthroplasty.

SKU: JSOA-1998-70-1-SU9 Categories: ,

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H. Clayton Thomason III, MD; Robert R. Slater, Jr., MD; Ghassan S. Tooma, MD; Mihail R. Rosu, PhD; Scott S. Kelley, MD

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