Hip joint disease
Conditions
Interventions
Control group:The control group placed the cup according to the "Lewinnek safety zone" and "Combined anteversion angle".
Experimental group:The study group placed the cup according to the "optimal cup placement angle" and "SH9H conical safety zone".
Sponsors
The Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: 1. Patients over 18 years old who undergo unilateral primary total hip replacement surgery due to hip osteoarthritis, femoral head necrosis, congenital hip dysplasia, femoral neck fracture, etc. (including patients who have undergone contralateral hip replacement); 2. The subjects fully understand the benefits and risks of this trial, are willing to participate in completing the relevant content of the trial, and sign an informed consent form.
Exclusion criteria
Exclusion criteria: 1. Patients undergoing THA surgery through non posterior lateral approach; 2. The medical history clearly indicates the presence of important soft tissue injuries around the joints, such as the gluteus medius and sciatic nerve; 3. Accidentally damaging important soft tissues around the joint during surgery (such as the gluteus medius, sciatic nerve, etc.); 4. Postoperative CT shows that the anteversion angle of the femoral prosthesis differs by more than 5 ° from the preoperative predicted anteversion angle; 5. Postoperative CT showed that the anteversion angle or abduction angle of the research group's cup was outside the "SH9H" safety zone, while the anteversion angle or abduction angle of the control group's cup was outside the "Lewinnek safety zone" and "combined anteversion angle" safety zones; 6. Patients who develop infections during postoperative follow-up; 7. Patients who experience dislocation due to major violence such as car accidents or falls from heights after surgery.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Dislocation rate; | — |
Secondary
| Measure | Time frame |
|---|---|
| Hip joint function score; | — |
Countries
China
Contacts
Public ContactHuiwu Li
The Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine
Outcome results
None listed