A computer-assisted, tibia-first technique for improved femoral component rotation in total knee arthroplasty.

ABSTRACT:

Background

The use of navigation for total knee arthroplasty (TKA) improves limb alignment in the coronal and sagittal planes. However, similar improvements in femoral and tibial component rotation have not yet been realized using currently available systems.

Methods

We developed a modified navigated TKA technique in which femoral rotation was set using the resected tibial plane as the reference with the aim of achieving a rectangular flexion gap. Limb alignment was assessed in a cohort of 30 knees using the navigation system. Post-operative limb alignment was measured using long-leg standing radiographs. Computed tomography was used to determine post-operative component orientation.

Results

Sagittal alignment data improved from a mean of 7.8° varus (pre-operative) to

SUBMITTER: Lee CM 

PROVIDER: S-EPMC5859675 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature