Patellar Tracking and Anterior Knee Pain are Similar After Medial Parapatellar and Midvastus Approaches in Minimally Invasive TKA

Abstract

Background Since the medial parapatellar (MPP) approach in conventional TKA can cause patellar maltracking and anterior knee pain, some orthopaedic surgeons use the midvastus (MV) approach instead of the MPP approach to reduce patellar maltracking. Minimally invasive surgical (MIS) TKA has been developed to limit the damage to the surrounding muscle and reduce the necessity of patellar eversion during surgery. Thus, MIS TKA might be associated with proper patellar tracking and a low incidence of anterior knee pain. However, this presumption has not been confirmed. Questions/purposes We asked whether the incidence of patellar maltracking and anterior knee pain differed with the MV and MPP in association with MIS TKA. Methods We prospectively followed 59 patients (60 knees)

Gap-balancing technique combined with patient-specific instrumentation in TKA

“…In the event of rotations [6°, the literature advises that lateral ligament instability should be assessed. Any further rotation of the femoral component may lead to suboptimal patellar tracking with anterior knee pain, kinematic restrictions, crepitation, overexertion and excessive wear of the polyethylene surfaces [19,34,51]. With the exception of two tibial components that were downsized following the removal of exophytes, the planned implants were used in all cases.…”

Comparable outcomes in mini‐midvastus versus mini‐medial parapatellar approach in total knee arthroplasty: a meta‐analysis and systematic review

“…This was done to avoid introduction of bias. A total of five RCT were included for analysis. Study details are displayed in Table .…”

“…The Cochrane ROB score for all five RCT is shown in Table . According to AHRQ standards, four RCT were deemed to be of good quality and one of poor quality.…”

“…Complications were reported in four studies . Both techniques had excellent reports, with only one report of wound complication in the mMV knee.…”

“…Despite having four studies reporting KSS and all included studies reporting ROM, the heterogeneous reporting time frames of these scores made it challenging to conduct a fair comparison. Hence, the KSS and ROM meta‐analysis results were only based on two studies at each post‐operative reporting time.…”