Developmental Dysplasia of the Hip
Conditions
Interventions
Prospective Musculoskeletal Modeling Cohort:None
Retrospective Clinical Validation Cohort:None
Sponsors
Fourth Medical Center of the Chinese People's Liberation Army General Hospital
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: Part 1 (Prospective Modeling Study): 1. Preoperative diagnosis of unilateral Hartofilakidis type B or C DDH, with the other hip normal; 2. Have undergone primary THA for more than 1 year; 3. No serious postoperative complications such as prosthesis loosening, infection, or dislocation; 4. Complete CT imaging data available at the last postoperative follow-up; 5. Able to cooperate with gait analysis testing. Part 2 (Retrospective Validation Study): 1. Patients with unilateral Hartofilakidis type B/C DDH who had primary THA at our hospital; 2. Postoperative follow-up time >= 1 year; 3. Clear and measurable anteroposterior pelvic X-rays after surgery; 4. Able to cooperate with follow-up via phone or outpatient visits.
Exclusion criteria
Exclusion criteria: 1.Previous surgery on the affected hip; 2.Other serious hip disorders, such as infection or tumor; 3.Neuromuscular disorders that may substantially affect gait or lower-limb function; 4.Serious postoperative complications, including prosthetic loosening, infection, or recurrent dislocation; 5.Incomplete clinical records or inadequate-quality radiographic, CT, or gait-analysis data; 6.Inability to complete follow-up or refusal to permit the use of clinical data for this study.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Peak Gluteus Medius Muscle Force;Hip Joint Contact Force;Three-Dimensional Spatiotemporal Gait Parameter;Hip Joint Kinematic Parameters During Gait;Hip Joint Kinetic Parameters During Gait;Harris Hip Score; | — |
Secondary
| Measure | Time frame |
|---|---|
| Forgotten Joint Score-12;Gluteus Medius Muscle Volume;Gluteus Medius Attachment Area;Vertical Center of Rotation;Greater Trochanter Height;Acetabular Offset;Femoral Offset;Gluteus Medius Moment Arm;Gluteus Medius Moment-Arm Angle;Incidence of Postoperative Complications; | — |
Countries
Chinese
Contacts
Public ContactChai Wei
Fourth Medical Center of the Chinese People's Liberation Army General Hospital
Outcome results
None listed