Summary
mobile app to replaced robot assited total hip replacement in developing countries
Abstract
Background
Acetabular Inclination and version are dependent on each other and influential. Effective lower limb version (ELLV) is the appropriate dynamic version of the femoral stem in relation to the long axis of tibia. The coaxial stitch technique used to correct and avoid any sort of Limb length discrepancy (LLD). Achieving appropriate combined version (CV) with no LLD is the key factor while performing 3D balancing of Total Hip Arthroplasty (THA).
Methods
Ongoing prospective study including 30 patients using Mobile application along with coaxial stitch technique, between the study period of February and April 2022. The results primarily to be analyzed clinically and radiologically to ascertain the implications of functional 3D balancing on x-ray parameters, clinical outcome scores (Harris Hip Score), ability to squat, and perception of LLD. Secondary results included complications like infection, dislocation and periprosthetic infection.
Results
The original socket was placed with appropriate inclination angle as of the trial component checked using mobile application. The post operative socket version using ischiolateral view method conformed the same finding. The average socket inclination angle was planned between 31* to 35* and version of 10* to 15*. The combined version was to be placed between 30*to 45* using mobile app. HHS improved with significant statistical significance (P< 0.001). There was significant improvement in terms of VAS preoprative and postoperative with no limb length discrepancy.
Conclusion
This study underlines the fact that even young surgeons with less experience can improve their cup placement in terms of inclination and version. 3D balancing of the hip with no LLD using angle inclinometer mobile application is an easy and cost effective method in developing nations.