Movement Pattern in Patients With Hip Dysplasia
|Hip Dysplasia||Procedure: Minimally invasive approach for Periacetabular osteotomy|
|Study Design:||Observational Model: Cohort
Time Perspective: Prospective
|Official Title:||Movement Pattern in Patients With Hip Dysplasia Operated With Minimally Invasive Approach in Peri-acetabular Osteotomy (PAO)|
- Hip flexion's muscle moment in stance evaluated in gait, run and jump test [ Time Frame: Preoperative (baseline), 6 and 12 month postoperative ]Examined using 3D Movement Capture System
- Hip extension angle evaluated in gait, run and jump test [ Time Frame: Preoperative (baseline), 6 and 12 month postoperative ]Examined using 3D Movement Capture Systen
- On-set of the hip muscles evaluated in gait, run and jump test [ Time Frame: Preoperative (baseline), 6 and 12 month postoperative ]Examined using skin electromyography (EMG)
- Function, sports and recreational activities [ Time Frame: Preoperative (baseline), 6 and 12 month postoperative ]Evaluated with Hip Dysfunction and Osteoarthritis Outcome Score (HOOS) and The Copenhagen Hip and Groin Outcome Score (HAGOS)
- Quality of life [ Time Frame: preoperative (baseline), 6 and 12 month postoperative ]Evaluated with Hip Dysfunction and Osteoarthritis Outcome Score (HOOS) and The Copenhagen Hip and Groin Outcome Score (HAGOS)
|Study Start Date:||March 2011|
|Study Completion Date:||March 2013|
|Primary Completion Date:||March 2013 (Final data collection date for primary outcome measure)|
Patients with hip dysplasia
Procedure: Minimally invasive approach for Periacetabular osteotomy
A peri-acetabular osteotomy is a surgery performed to correct the dysplastic acetabulum and reduce joint contact pressures and early osteoarthritis.
Other Name: PAO (periacetabular osteotomy)
Enrolled from the patients acquaintance circle
Congenital hip dysplasia is a disease characterised by pathological changes in the hip joint. Hip dysplasia is a normal disease with a prevalence of 4.3% in men and 3.6 in woman. Untreated hip dysplasia is a known cause of developing osteoarthritis early in life and symptoms as pain, hip instability together with a changed gait pattern are normal. Symptomatic hip dysplasia is seen in patients between 15 and 55 years and can be unilateral as well as bilateral. Causes of hip dysplasia are described as genetic, mechanic or hormonal.
Today patients with hip dysplasia are offered a hip conserving surgery before the osteoarthritis has developed. In 2003 a minimally invasive approach for periacetabular osteotomy (PAO) was introduced at Aarhus University Hospital. An advantage of minimally invasive approach compared to the classical Bernese periacetabular osteotomy is minimal impact of the soft tissues in the hip region.
Hip pain and activity limitations highly affect quality of life and physical function. The gait distance is reduced and patients have to compensate to relieve the pressure on the hip joint. Knowledge about the dynamics of the gait and running pattern in patients with dysplasia is important to understand the consequences of the dysplastic hip joint. Furthermore knowledge about gait compensations is relevant for the clinicians in the management and treatment of patients with hip dysplasia.
Today, gait and running compensation is unknown after minimally invasive approach The purpose of this study is, therefore, to examine the movement pattern in patients with hip dysplasia preoperative, six and 12 month after minimally invasive approach for Peri-acetabular osteotomy (PAO). Secondary to examine the movement pattern in patients compared to healthy controls and historical data.
Please refer to this study by its ClinicalTrials.gov identifier: NCT01344421
|Aarhus University Hospital|
|Aarhus, Denmark, 8000|
|Principal Investigator:||Julie S Jacobsen, MSc||Aarhus University Hospital|
|Principal Investigator:||Inger Mechlenburg, MSc, PhD||Aarhus University Hospital|
|Study Chair:||Kjeld Søballe, Prof. Dr.med||Aarhus University Hospital|
|Study Chair:||Henrik Sørensen, PhD||University of Aarhus|
|Study Chair:||Dennis Nielsen, MSc||University of Aarhus|