1) Congenital hip dysplasia and 2) hip revision. dislocation of the hip
Conditions
Interventions
None listed
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: Patients must have developmental dysplasia of the hips or require a major revision of a previously implanted total hip replacement, be between 18-70 years of age, and have a body mass index between 17-30.
Exclusion criteria
Exclusion criteria: - Substantial neurologic or musculo-skeletal disorders that would adversely affect ability to perform ADL; - Use of medication that affects the functioning or the neurological control of the M-S system; - Prior intraarticular infection of the hip; - Osteoporosis.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The main study parameters are 1) changes in anatomical musculo-skeletal parameters pre- and post-OR, and 2) the amount of difference in spatiotemporal, kinematic and kinetic parameters during basic ADL between model outcome and actual measurement (6-9 months post-OR). The anatomical parameters consist of the hip centre of rotation, femoral shortening length, muscle attachment points, muscle wrapping contours, muscle volumes, bony landmarks, tendon lengths and physiological cross-sectional areas of muscles. The spatiotemporal, kinematic and kinetic parameters include walking speed, stride length, cadence, hip range of motion, maximal hip flexion/extension, hip power generation/absorption, and hip flexion moment during various ADL. | — |
Secondary
| Measure | Time frame |
|---|---|
| not applicable. | — |
Countries
Netherlands