Accuracy of Component Placement in Robotic-Assisted Total Hip Arthroplasty
Authors: Redmond JM, Gupta A, Hammarstedt JE, Petrakos A, Stake CE, Domb BG
DOI: 10.3928/01477447-20160404-06
Purpose
To assess the precision of robotic-assisted THA for component positioning compared to radiographic measurements.
Methods
146 robotic-assisted THAs analyzed for acetabular cup angles, leg length, and offset accuracy, with subgroup analysis by surgical approach.
Key Findings
- Robotic system predicted component positions within ~3° and 3–4 mm of radiographic values.
- 95% of cases had acetabular components within 10° of planned orientation.
- Occasional system malfunctions observed, requiring vigilance.
Conclusions
Robotic-assisted THA achieves high accuracy in implant placement and leg length restoration.
What This Means for Providers
- Robotic assistance can enhance precision in THA, potentially reducing complications from malpositioned components.
- Maintain awareness of system limitations and ensure backup verification intraoperatively.
- Consider robotic platforms for complex cases requiring exact biomechanical restoration.