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NCT Number: NCT01344421

Movement Pattern in Patients With Hip Dysplasia

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.

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Key information

Conditions

Hip Dysplasia Hip Dislocation Hip Injuries Joint Diseases Joint Dislocations Musculoskeletal Diseases Wounds and Injuries

Age range

18 year–60 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Aarhus University Hospital

Aarhus, 8000, Denmark

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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.

Treatment and study plan

Minimally invasive approach for Periacetabular osteotomy

Procedure

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)

Primary outcomes

  1. 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

Secondary outcomes

  1. 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

  2. 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)

  3. 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)

  4. 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)

Sponsors and collaborators

Lead sponsor

Aarhus University Hospital

Other

Registry information

Official study title

Movement Pattern in Patients With Hip Dysplasia Operated With Minimally Invasive Approach in Peri-acetabular Osteotomy (PAO)

Important dates

Study start
2011
Primary completion
2013
Study completion
2013
First posted
Apr 29, 2011
Registry last updated
Apr 5, 2013

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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