Anatomical references for tibial sagittal alignment in total knee arthroplasty: a comparison of three anatomical axes based on 3D reconstructed CT images.

Background: This study was designed to analyze three tibial axis reference lines including the anterior tibial cortex (ATC) line, the fibular line (FL), and the anatomical axis of tibia (AAT) line, to determine which line most closely parallels the mechanical axis (MA) of the tibia in the sagittal plane. The clinical relevance of the study is that through finding a reliable landmark on the leg, a surgeon may minimize posterior tibial slope measurement errors thereby and improving the technique for assuring proper alignment of total knee arthroplasty.

Methods: The material for this study included CT scans of the tibia from 85 consecutive patients and 168 knees (78 without osteoarthritis (OA) and 90 knees with OA).

Novel articulating medullary-sparing spacer for the treatment of infectious hip arthritis.

Two-stage total hip arthroplasty (THA) is considered a safe choice for the treatment of primary infectious arthritis of the hip. In cases where the proximal portion of the femur is intact without infection, the use of a spacer with a femoral stem during the interim would disturb the normal femoral medullary cavity. The authors report the technical procedure and outcomes of cases using a novel medullary sparing, antibiotic-loaded hip spacer for the treatment of hip infections.

[Cementless total hip arthroplasty for the management of advanced tuberculous coxitis].

Objective: The question of whether a total joint arthroplasty should be attempted in a patient with a current or previous infection of tuberculosis continues to arouse controversy. The aim of this report was to evaluate the clinical outcomes of cementless total hip arthroplasty for the treatment of advanced tuberculosis of hip.

Methods: A total of 14 patients with advanced tuberculosis of hip treated by cementless total hip arthroplasty were retrospectively analyzed.

[Cementless two-staged total hip arthroplasty for chronic periprosthetic infection].

Objective: To determine the clinical outcomes of two-staged cementless revision arthroplasty for the treatment of deep periprosthetic infection after total hip arthroplasty.

Methods: Twenty-three patients with deep periprosthetic infection treated with a standard protocol of two-staged cementless revision hip arthroplasty were enrolled in this study. There were 9 male patients and 14 female patients with an average age of 64 years (range, 52-78 years).