Mid-term clinical outcomes of the dual mobility total hip prosthesis in primary total hip arthroplasty
10.3760/cma.j.issn.0253-2352.2019.15.003
- VernacularTitle: 双动全髋关节假体置换术的中期疗效
- Author:
Xiaodong WANG
1
;
Jie WEI
1
;
Xiusheng GUO
1
;
Jiawei NIU
2
;
Xinjie CAO
2
;
Jianyou LIU
2
Author Information
1. Department of Orthopaedics, People's Hospital of Shanxi Province, Taiyuan 030053, China
2. Postgraduate Institute, Shanxi Medical University, Taiyuan 030001, China
- Publication Type:Clinical Trail
- Keywords:
Arthroplasty, replacement, hip;
Prostheses and implants;
Treatment outcome
- From:
Chinese Journal of Orthopaedics
2019;39(15):926-934
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the mid-term outcomes of the dual mobility total hip prosthesis in primary total hip arthroplasty.
Methods:A total of 101 patients who underwent primary total hip arthroplasty with dual mobility total hip prosthesis from May 2010 to March 2013 were enrolled in the present study with complete follow-up information. There were 56 females and 45 males with the mean age of 66.36 years (rang from 58 to 77 years). There were 35 patients with femoral neck fracture, 33 patients with femoral head necrosis, 10 patients with hip osteoarthritis, 18 patients with secondary osteoarthritis to hip dysplasia and 5 patients with ankylosing spondylitis. The dual mobility total hip prosthesis was used for all 101 patients by the posterior-lateral approach of hip joint. Harris hip score was used to evaluate the clinical effects. Radiographic analysis was also performed to evaluate the biological fixation effects of the prosthesis, dislocation of the prosthesis, osteolysis and migration of the acetabular cup.
Results:The mean operation duration was 80.68±6.59 min (range from 70 to 90 min). The average blood loss during the operation was 180.67±18.76 ml (range from 150 to 200 ml). All incisions were healed at the first stage. All patients were followed up with an average of 65±3 months (range from 62 to 75 months). Harris hip score improved from 56.70±16.71 before surgery to 94.26±1.91 at the last follow-up. The differences among different follow-up times were of statistical significance. The Hip flexion and extension, adduction and abduction, and internal and external rotation improved from 86.67°±16.70°, 34.06°±7.05°, 34.53°±7.45° preoperatively to 141.73°±6.56°, 57.06°±3.83°, 75.18°±4.00° at the last follow-up, respectively. At 3 months after the operation, the X-ray showed satisfied bone integration. There were no acetabular and femoral shaft fractures, sciatic nerve, femoral artery and vein injuries during the operation, and no joint dislocation, prosthesis loosening, infection and deep venous thrombosis of lower limbs during the postoperative and follow-up duration.
Conclusion:The dual mobility total hip prosthesis has the advantages in good initial and middle stability, rapid bone growth, low dislocation rate and repid recovery of postoperative motion range. It is suitable for patients over 65 years old or younger patients with postoperatively high dislocation.
