Wound closure position in total knee arthroplasty: flexion versus extension—a meta-analysis of randomized controlled trials

Inferior patellar mobility before and after knee arthroplasty: A comparison with healthy knees

“…Although no significant correlation was observed between mediolateral patellar mobility and patient satisfaction, patellofemoral alignment parameters are associated with the incidence of anterior knee pain [14]. Closure of the wound in knee flexion in our study likely prevented stiffness of the patellofemoral compartment and reduced mobility [18, 26]. Nevertheless, maintaining patellar mobility during surgery is crucial for achieving a good range of motion and preventing anterior knee pain [24, 27].…”

“…It has been demonstrated that patellar mobility after KA does not change significantly. One plausible reason for this observation could be the consistent closure of the capsule at 90°of knee flexion in all patients, as opposed to closure in knee extension, which may lead to capsule tightening and subsequent patella hypomobility [17,18,26]. A meta-analysis of the literature has indicated that the range of motion may improve when the knee is closed in flexion [18].…”

“…One plausible reason for this observation could be the consistent closure of the capsule at 90°of knee flexion in all patients, as opposed to closure in knee extension, which may lead to capsule tightening and subsequent patella hypomobility [17,18,26]. A meta-analysis of the literature has indicated that the range of motion may improve when the knee is closed in flexion [18]. Tension of the medial and lateral capsule is higher in 60°of flexion and F I G U R E 3 Subcategories of the Knee Society Score prior and 3 months after knee arthroplasty.…”