Computer-navigated minimally invasive total knee arthroplasty for patients with retained implants in the femur

Femur positioning in navigated total knee arthroplasty.

Navigated total knee arthroplasty (TKA) results in better restoration of neutral mechanical axis than does the conventional technique. Nevertheless, coronal malalignment has not been eliminated. It is yet unknown whether errors in implant positioning occur more on the femoral side, more on the tibial side, or equally on both sides. The hypothesis of this study was that a predominance of coronal...

[Minimally invasive total knee arthroplasty].

Minimally invasive and computer-navigated total hip arthroplasty: a qualitative and systematic review of the literature

BACKGROUND Both minimally invasive surgery (MIS) and computer-assisted surgery (CAS) for total hip arthroplasty (THA) have gained popularity in recent years. We conducted a qualitative and systematic review to assess the effectiveness of MIS, CAS and computer-assisted MIS for THA. METHODS An extensive computerised literature search of PubMed, Medline, Embase and OVIDSP was conducted. Both ran...

Radiologic Assessment of Distal Femur Cutting Angle in Varus Knee Candidates for Total Knee Arthroplasty

Background: In a total knee arthroplasty surgery the goal is to produce 90 degree angle between the knee articular lobe and the mechanical femoral line. Most orthopedic surgeons usually utilize a 5 to 7 degree for distal femoral cutting angle. In this study we will aim at clearing this question, that whether the” five-seven degree” distal femoral cutting angle supposed to be an equable spectrum...

A new navigation system for minimally invasive total knee arthroplasty.

A computer-assisted navigation system to be used for total knee arthroplasties (TKAs) was reported to improve the accuracy of bone resection and result in precise implant placement, but the concomitant surgical invasion and time consumption are clinical problems. We developed a computed tomography (CT)-based navigation system (NNS) to be used for minimally invasive TKA. It requires only the ref...