Mechanical and Anatomical Alignment Guide Techniques Are Superior to Freehand in Achieving Target Orientation of an Acetabular Component.

ABSTRACT:

Background

Achieving accurate and consistent acetabular component orientation remains a major challenge in total hip arthroplasty.

Methods

We used a pelvic model to compare freehand techniques vs mechanical and anatomical alignment guides in achieving a target operative inclination (OI) and operative anteversion (OA). Thirty subjects comprising consultant orthopedic surgeons, orthopedic trainees, and nonsurgical staff positioned an acetabular component in a pelvic model using 3 different methods for guiding inclination and another 3 for guiding version.

Results

Using either a standard mechanical alignment guide (MAG) or a spirit level MAG technique eliminated outliers from target OI, while the freehand method resulted in 46.7% of measurements outside the OI target ran

SUBMITTER: Bruce-Brand R 

PROVIDER: S-EPMC8516817 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature