Abstract
Intra-operative range of motion (ROM) assessment can be challenging during total knee arthroplasty (TKA) surgery. Measurement accuracy is often compromised by patient draping and anatomy, particularly when assessing knee extension. Accurate ROM assessment is important, as ROM after total knee arthroplasty is an important indicator of clinical outcome. Computer assisted surgery has been shown to accurately determine intra-operative range of motion; however, navigation systems are costly and not readily available to many surgeons. We have developed a simple, cost-effective intraoperative device to precisely measure knee flexion and extension that is efficient and easy to use.
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