Movement Pattern in Patients With Hip Dysplasia

Sponsor

Aarhus University Hospital (Other)

Overall Status

Completed

CT.gov ID

NCT01344421

Collaborator

(none)

Enrollment

Location

Duration (Months)

2.3

Patients Per Site Per Month

Study Details

Study Description

Brief Summary

The purpose of this study is to examine the movement pattern in patients with hip dysplasia preoperative, six and 12 month after minimally invasive approach for Periacetabular osteotomy (PAO). Secondary to examine the movement pattern in patients compared to healthy controls and historical data.

Condition or Disease	Intervention/Treatment	Phase
Hip Dysplasia	Procedure: Minimally invasive approach for Periacetabular osteotomy

Detailed Description

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.

Study Design

Study Type:

Observational

Actual Enrollment :

55 participants

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)

Study Start Date :

Mar 1, 2011

Actual Primary Completion Date :

Mar 1, 2013

Actual Study Completion Date :

Mar 1, 2013

Arms and Interventions

Arm	Intervention/Treatment
hip dysplasia 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 Names: PAO (periacetabular osteotomy)
Healthy people Enrolled from the patients acquaintance circle

Arm

Intervention/Treatment

hip dysplasia

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 Names:

PAO (periacetabular osteotomy)

Healthy people

Enrolled from the patients acquaintance circle

Outcome Measures

Primary Outcome Measures

Hip flexion's muscle moment in stance evaluated in gait, run and jump test [Preoperative (baseline), 6 and 12 month postoperative]
Examined using 3D Movement Capture System

Secondary Outcome Measures

Hip extension angle evaluated in gait, run and jump test [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 [Preoperative (baseline), 6 and 12 month postoperative]
Examined using skin electromyography (EMG)
Function, sports and recreational activities [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 [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)

Eligibility Criteria

Criteria

Ages Eligible for Study:

18 Years to 60 Years

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

Yes

Inclusion Criteria:

Patients diagnosed with hip dysplasia
Patients in the age of 18-60 years
Patients, who can speak, understand and read Danish

Exclusion Criteria:

Persons with hip dysplasia secondary to other hip conditions such as Calvé Perthes and epiphysiolysis.
Persons who have had alloplastic surgery in the hip, knee or ankle.
Persons with diseases that affect the gait pattern.
Persons with serious hip, knee, ankle or back pain.