Exercise and Patient Education Compared With Usual Care in Patients With Hip Dysplasia

Inclusion Criteria: * Radiographically verified hip dysplasia by a Wiberg's centre edge (CE) angle of 10-25 degrees and an acetabular Index (AI) angle \>10 degrees * Hip and/or groin pain as primary pain for at least three months * Candidate for periacetabular osteotomy (PAO) but unwilling to undergo PAO, or on a waiting list for surgery (PAO) for 12 months or longer * Not candidate for PAO (negative impingement test, BMI \>25, hip osteoarthritis, age \>45 years or reduced hip range of motion) Exclusion Criteria: * Self-reported pain score \>80 points measured with Copenhagen Hip and Groin outcome score * Any major planned surgery (i.e. arthroplastic surgery or discectomy surgery) * BMI \>35 * Acetabular retroversion defined by crossover sign and posterior wall sign * Calvé Legg Perthes or epiphysiolysis * Previous pelvic/hip surgery in index limb * Previous pelvic/hip surgery within the last 2 years in contralateral limb * Previous surgery due to herniated disc or spondylodesis * Previous arthroplastic surgery in the hip, knee or ankle * Physical (pregnancy/trauma), neurological, medical or rheumatic conditions severely affecting the hip function * Inadequacy in written and spoken Danish, mental illness or other conditions affecting the ability to follow mandatory procedures for participation