Accuracy of Component Positioning in 1980 Total Hip Arthroplasties: A Comparative Analysis by Surgical Technique and Mode of Guidance

Accuracy of Component Positioning in 1980 Total Hip Arthroplasties: A Comparative Analysis by Surgical Technique and Mode of Guidance

Authors: Domb BG, Redmond JM, Louis SS, Alden KJ, Daley RJ, LaReau JM, Petrakos AE, Gui C, Suarez-Ahedo C

DOI: 10.1016/j.arth.2015.06.059

Purpose

Compare acetabular component placement accuracy, leg length discrepancy (LLD), and global offset difference (GOD) across six THA surgical techniques including robotic and navigation guidance.

Methods

• Retrospective review of 1980 THAs.
• Outcomes: placement within Lewinnek and Callanan safe zones, LLD, GOD.

Key Findings

• Robotic and navigation guidance significantly improved cup placement within Lewinnek’s (P<0.005, P<0.05) and robotic guidance also for Callanan’s safe zone (P<0.005).
• No significant differences in excessive LLD or GOD across groups.

What This Means for Providers

• Incorporate robotic or navigation assistance to enhance accuracy of acetabular component positioning, potentially improving implant longevity and reducing complications.
• Leg length and offset outcomes appear unaffected by guidance technique, highlighting positioning as the primary benefit.