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Functional outcomes and complications of total hip arthroplasty with dual mobility cup : an audit
Muhammad Younus Khan Durrani1, Javeria Saeed1, Masood Umer1
1Aga Khan University Hospital, Karachi, Pakistan.
Insights
This study evaluated total hip arthroplasty using dual mobility cups, finding a reduced dislocation rate. Functional outcomes improved significantly, demonstrating the implant
Area of Science:
- Orthopedic Surgery
- Biomaterials Science
Background:
- Total hip arthroplasty (THA) is a common procedure for hip joint diseases.
- Dual mobility cups are designed to improve stability and reduce dislocation risk in THA.
Purpose of the Study:
- To assess functional outcomes in patients who underwent THA with a dual mobility cup.
- To evaluate the effectiveness of dual mobility implants in reducing dislocation rates.
Main Methods:
- Retrospective audit of 210 patients undergoing THA with dual mobility prosthesis between July 2016 and June 2018.
- Data collected included pre- and post-operative Harris scores, complications, and demographics.
- Statistical analysis performed using SPSS v. 21.
Main Results:
- A total of 210 patients (114 female, 96 male) were included.
- Mean pre-operative Harris score was 33.7, improving to 75.9 post-operatively.
- The dislocation rate was low, with only one reported case, indicating a significant reduction in this complication.
Conclusions:
- Dual mobility implants in THA significantly reduce the risk of dislocation.
- The use of dual mobility cups leads to improved functional outcomes in THA patients.
Objective:
To determine the functional outcomes in total hip arthroplasty with a dual mobility cup, performed in our hospital.
Methods:
After receiving an exemption from the Ethics review committee of the hospital, data collection for audit was started in January 2019. Records from July 2016 to June 2018 were included. All patients who underwent total hip arthroplasty with dual mobility prosthesis without any age limit were included. A proforma was prepared to collect the required information. Data was entered and analyzed on SPSS v. 21.
Results:
Two hundred and ten patients were included, 114 females and 96 males. Of the total, 188 patients underwent unilateral surgery while 22 had bilateral hip arthroplasty. The mean postoperative hospital stay was 5.91±3.9 days. . Mean pre-op Harris score was 33.7±7.6 and the post-op mean score was 75.9± 5.34. Eighty-three (39.5 %) patients had the neck of femur fracture, 31(14.8%) had osteoarthritis while 28(13.3%) had avascular necrosis. Post-surgery complications included, wound infection, surgical site haematoma, NSTEMI, and only one patient reported dislocation after use of dual mobility cup.
Conclusions:
The dislocation rate which was the prime concern, has been reduced with the use of dual mobility implant in total hip arthroplasty patients.
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