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Updated: May 24, 2025
In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
Published on: July 2, 2021
Computed tomography-based navigation versus accelerometer-based portable navigation in total hip arthroplasty for
Shinya Tanaka1, Yusuke Osawa2, Yasuhiko Takegami1
1Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya-shi, Japan.
Computed tomography-based navigation (CTN) demonstrated superior accuracy in total hip arthroplasty (THA) for dysplastic hip osteoarthritis compared to portable navigation (PN). CTN resulted in longer operative times but improved cup placement accuracy.
Area of Science:
- Orthopedic Surgery
- Medical Imaging
- Surgical Navigation
Background:
- Accurate acetabular cup placement is critical in total hip arthroplasty (THA) for dysplastic hip osteoarthritis (DHOA) due to complex anatomy.
- Computed tomography-based navigation (CTN) has shown good accuracy, while portable navigation (PN) offers cost-effectiveness and ease of use.
Purpose of the Study:
- To compare the accuracy of portable navigation (PN) versus computed tomography-based navigation (CTN) for acetabular cup placement in THA for DHOA.
Main Methods:
- A comparative study involving 114 patients undergoing THA for DHOA using either CTN or PN.
- Propensity score matching was used to create two groups of 32 patients each.
- Key outcomes assessed included cup inclination, anteversion, placement position accuracy, and operative time.
Main Results:
- No significant difference in overall accuracy error for cup inclination and anteversion between CTN-THA and PN-THA groups.
- CTN-THA demonstrated significantly better navigation error for both inclination and anteversion compared to PN-THA.
- The anteroposterior cup placement error was significantly larger in the PN-THA group than in the CTN-THA group.
- Operative time was significantly longer in the CTN-THA group (115 min) compared to the PN-THA group (87 min).
Conclusions:
- Computed tomography-based navigation (CTN) offers superior accuracy for acetabular cup placement angles and positions in THA for DHOA compared to portable navigation (PN).
- CTN may increase operative time but provides enhanced precision for critical surgical parameters.
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