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Cup implantation accuracy using the HipCOMPASS mechanical intraoperative support device
Ken Suda1, Tomoyuki Ito2, Dai Miyasaka1
1Department of Orthopedic Surgery, Niigata University, 757 1bancho, Chuoukuasahimatidori, Niigata City, Niigata 951-8510 Japan.
Springerplus
|July 8, 2016
Summary
HipCOMPASS significantly improves total hip arthroplasty (THA) accuracy by reducing cup orientation errors. This simple, cost-effective tool also decreases operative time, making it a valuable aid for THA procedures.
Area of Science:
- Orthopedic Surgery
- Surgical Navigation
- Medical Devices
Background:
- Existing navigation systems for total hip arthroplasty (THA) lack versatility and widespread adoption.
- HipCOMPASS is a novel, mechanical angle indicator designed for supine THA to enhance implantation accuracy.
Purpose of the Study:
- To evaluate the accuracy of cup orientation using HipCOMPASS in THA.
- To compare the accuracy and operative time of THA with and without HipCOMPASS.
- To assess the incidence of outliers in cup orientation.
Main Methods:
- A retrospective comparative study involving 97 THA cases with HipCOMPASS and 80 cases without.
- Comparison of preoperative planned cup orientation with postoperative CT-derived orientation to calculate errors.
- Analysis of mean operative times for both groups.
Main Results:
- HipCOMPASS use resulted in mean absolute errors of 2.9° for anteversion and 2.9° for inclination.
- Cases without HipCOMPASS showed significantly higher mean errors (8.8° anteversion, 6.1° inclination).
- Outlier rates were drastically reduced from 48.8% to 1.0% with HipCOMPASS, and operative time decreased by approximately 28 minutes.
Conclusions:
- HipCOMPASS significantly enhances cup implantation accuracy in THA.
- The device is simple, versatile, cost-effective, and reduces operative time.
- HipCOMPASS is a highly useful and effective support device for THA.
