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Operative or non-surgical treatment of Perthes’ disease

Op Non-STOP Study (Operative or Non-Surgical Treatment of Perthes’ disease). A multi-centre prospective randomised superiority trial of containment surgery compared to optimised non-surgical care for Perthes’ disease of the hip in children

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN83315571
Enrollment
216
Registered
2024-08-02
Start date
2024-11-15
Completion date
Unknown
Last updated
2026-07-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Perthes’ disease Musculoskeletal Diseases

Interventions

The proposed project is a two-phase trial. Phase 1 (internal pilot) will take place at a minimum of 15 centres over a 12-month period and will confirm the expected rate of recruitment and data collec

Sponsors

Alder Hey Children's NHS Foundation Trust
Lead Sponsor

Eligibility

Sex/Gender
All
Age
5 Years to 12 Years

Inclusion criteria

Inclusion criteria: 1. Radiographic evidence of Perthes’ disease 2. Radiographs demonstrate that the disease is in the initial, sclerotic or fragmentation stage 3. Aged 5 to 12 years inclusive 4. Willing and able to give informed assent/consent

Exclusion criteria

Exclusion criteria: 1. There is evidence that the patient and/or parent would be unable to adhere to the study procedures or complete follow-up, such as insufficient comprehension 2. Child has undergone prior containment surgery on the affected hip (i.e. the hip to be randomised) 3. The child has previously been enrolled into the OP Non-STOP Study

Design outcomes

Primary

MeasureTime frame
Function is measured using the PROMIS Proxy Mobility Score at 36 months post-randomisation

Secondary

MeasureTime frame
1. Function is measured using the PROMIS Proxy Mobility Score at Baseline, 3, 6, 9, 12, 18, 24, 30 and 36 months post-randomisation 2. Pain is measured using the Wong-Baker FACES pain rating scale at Baseline, 3, 6, 12, 18, 24, 30 and 36months post-randomisation 3. Quality of life is measured using the CHU-9D questionnaire at 3, 6, 9, 12, 18, 24, 30 and 36 months post-randomisation 4. Impact on family life is measured using the PROMIS Proxy Family Relationships Score at 3, 6, 9, 12, 18, 24, 30 and 36 months post-randomisation 5. Educational Participation is measured using a bespoke 'days of missed educational attendance' questionnaire at 3, 6, 9, 12, 18, 24, 30 and 36 months post-randomisation 6. Complication rate measured using a bespoke complications questionnaire at 6, 12, 18, and 36 months post-randomisation 7. Cost-effectiveness from the UK NHS and Personal Social Services perspective is measured using Healthcare and Personal Resource use, absence from work, purchased childcare and CHU-9D questionnaires at baseline (CHU-9D only), 6, 9, 12, 18, 24, 30 and 36 months post-randomisation 8. The degree of residual deformity is measured from routinely collected images of the hip or pelvis at 30-36 months post-randomisation

Countries

England, Scotland, United Kingdom, Wales

Contacts

Public ContactDaniel Perry
danperry@liverpool.ac.uk+44 (0)151 282 4661

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Jul 23, 2026