One of the challenges of surgery replacement total knee arthroplasty is the restoration of the line anatomical articulation. The aim of this study is to assess clinical and radiological and their statistical relationship with the position of line articulating in revision total knee arthroplasty. Materials and methods: We studied 25 consecutive patients in our hospital from January 2002 to December 2006 through prosthetic replacement PFC TC- 3 Sigma (DePuy®). We studied the mobility, stability and clinical evaluation according to the American Knee Society index (AKS), in the radiological study explored the anatomic axis of the knee and the distance from the line as articulate Hofmann y cols. Results: 18 patients (77%) presented a articular line between +4 mm and 4 mm respect to the line prior to surgery, 4 patients (16%) presented - 4 mm from de previous articular line, showed a shift toward the line of proximal joint, and 3 patients (12%) presented +4 mm displacement. Patients who were found in the group -4 mm had 75 ° flexion, compared with 90 of the group +4mm and -4 mm and 88.33 mm +4 ° group (P <0.05), The AKS index of patients with displacement proximal (- 4mm) was 54.25, compared with 70.77 of the group +4mm and 4 mm and 61 mm +4 group (p <0.05). Discussion: Satisfactory results of this study show the importance of planning pre and peroperatoria and a refined surgical technique for tracing the anatomical references and placement of implants incorrect articular line.

One of the challenges of surgery replacement total knee arthroplasty is the restoration of the line anatomical articulation. The aim of this study is to assess clinical and radiological and their statistical relationship with the position of line articulating in revision total knee arthroplasty. Materials and methods: We studied 25 consecutive patients in our hospital from January 2002 to December 2006 through prosthetic replacement PFC TC- 3 Sigma (DePuy®). We studied the mobility, stability and clinical evaluation according to the American Knee Society index (AKS), in the radiological study explored the anatomic axis of the knee and the distance from the line as articulate Hofmann y cols. Results: 18 patients (77%) presented a articular line between +4 mm and 4 mm respect to the line prior to surgery, 4 patients (16%) presented - 4 mm from de previous articular line, showed a shift toward the line of proximal joint, and 3 patients (12%) presented +4 mm displacement. Patients who were found in the group -4 mm had 75 ° flexion, compared with 90 of the group +4mm and -4 mm and 88.33 mm +4 ° group (P <0.05), The AKS index of patients with displacement proximal (- 4mm) was 54.25, compared with 70.77 of the group +4mm and 4 mm and 61 mm +4 group (p <0.05). Discussion: Satisfactory results of this study show the importance of planning pre and peroperatoria and a refined surgical technique for tracing the anatomical references and placement of implants incorrect articular line.