Direct anterior approach to total hip arthroplasty using computer navigation.

Area of Science:

• Orthopedic Surgery
• Medical Technology
• Surgical Navigation

Background:

• Computer navigation adoption in total hip arthroplasty (THA) lags behind total knee arthroplasty (TKA).
• Traditional THA approaches (posterior/lateral) present challenges for computer navigation system setup.
• The direct anterior approach (DAA) in THA, performed in the supine position, simplifies system registration.

Purpose of the Study:

• To evaluate the efficacy of computer navigation in primary THA using the direct anterior approach.
• To determine if computer navigation improves acetabular cup placement accuracy.
• To assess the impact of computer navigation on operative time in THA.

Main Methods:

• A retrospective study comparing 150 computer-navigated THAs with 150 non-navigated THAs.
• Patients were matched for age, gender, and body mass index.
• Postoperative pelvic radiographs and operative times were analyzed.

Main Results:

• The navigation group showed a mean cup inclination of 41° versus 36° in the non-navigated group.
• Mean operative time was reduced in the navigation group (56 minutes) compared to the non-navigated group (61 minutes).
• Accuracy and precision of cup angle placement were comparable, with a slight improvement noted in the navigation group.

Conclusions:

• Computer navigation is easily integrated with the direct anterior approach for THA.
• This approach using computer navigation shortens operative time and offers comparable or improved cup placement accuracy.
• Computer navigation is a valuable and straightforward technology for hip arthroplasty performed in the supine position.