Introduction Prosthetic and operative modifications in total knee arthroplasty (TKA) have
been proposed to maximise post-operative knee flexion as it is essential in routine functional
activities. Methods We performed a double blind randomised controlled trial to compare
clinical outcomes of primary cruciate-retaining TKA for osteoarthritis with the femoral
component implanted in either 4° flexion in the sagittal plane (F) or in a neutral position (C).
The primary outcome of knee flexion and secondary outcomes knee extension, quadriceps …