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Furlong Evolution® Hip Trial

This study is currently recruiting participants.
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Verified September 2015 by Imperial College London
Joint Replacement Instrumented Orthopaedics Ltd
Information provided by (Responsible Party):
Imperial College London Identifier:
First received: October 16, 2012
Last updated: January 12, 2016
Last verified: September 2015

Total hip replacement (THR) is a highly effective procedure in relieving pain and restoring function. Many different implants can be used in artificial hip joints. Hydroxyapatiteceramic (HAC) coating has become a well established The JRI Furlong® HAC femoral stem is one such implant with good long term survivorship. The femoral implant has been used since 1985 and published findings have shown a 97.4% survivorship at a mean of 17 years follow up in patients. The Furlong Evolution® design is based on the tried and tested Furlong HAC but with some modifications.

This is a 10 year multicentre clinical surveillance study, which aims to assess the clinical, functional and radiological performance of the Furlong Evolution® Hip stem in human patients.

Focus: A Multicentre Prospective Clinical Surveillance Study Aims to Assess the Clinical, Functional and Radiological Outcome of the Furlong Evolution® Hip Stem

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: A Prospective Multicentre Clinical Surveillance Study To Evaluate The Stability, Efficacy And Safety Of The Furlong Evolution® Hip Stem In Primary Total Hip Arthroplasty

Further study details as provided by Imperial College London:

Primary Outcome Measures:
  • The performance of the Furlong Evolution Hip Stem will be assessed clinically and radiographically of all participants. Number of participants who have reported complications, adverse events & serious adverse events will act as a measure of safety. [ Time Frame: 10 years ]

Secondary Outcome Measures:
  • Questionnaires (Oxford Hip,EQ5D & Harris Hip Score) will be obtained from participating subjects to evaluate patient function & satisfaction & quality of life at each follow up visit. [ Time Frame: 10 years ]

Estimated Enrollment: 700
Study Start Date: October 2012
Estimated Study Completion Date: October 2022
Estimated Primary Completion Date: October 2022 (Final data collection date for primary outcome measure)
Detailed Description:

Purpose and Design:

The Furlong Evolution® design is based on the tried and tested Furlong H.A.C implant but with some modifications. It still retains its full H.A.C coating and is much shorter in length. This potentially makes it easier to introduce into the femoral canal, which may result in less soft tissue damage and lower rate of femoral fracture. This would be very beneficial, should revision (implant replacement) be required at a later date. This potential characteristic has been highlighted as an important component of determining the clinical effectiveness of a total hip replacement.

As per the National Institute of Clinical Excellence (NICE) guidelines the best prostheses demonstrates a revision rate (the rate at which they need to be replaced) of 10% or less at 10 years. This should be regarded as the current benchmark in the selection of prostheses for primary Total Hip Replacement (THR). It is also considered reasonable to recommend a prostheses with a maximum of 3% revision rate at 3 years which would indicate performance would then be subjected to annual review (up to 10 years) to ensure that the revision rate remains consistent with the 10year benchmark. The Orthopaedic Data Evaluation Panel (ODEP) was established to evaluate data on the outcomes of prostheses provided by manufactures and to inform the NHS which products are compliant with the benchmarks set by NICE. Therefore this study will be a ODEP compliant multicentre prospective surveillance study of the Furlong Evolution® Hip Stem that will assess the clinical, functional and radiographical performance over a 10 year period in compliance with the NICE guidelines.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
As per ODEP guidelines, a minimum of 500 cohort size is required for benchmark validation of the clinical performance of a new orthopaedic implant. We will be using a total sample size of 700 patients over 10 centres to ensure we meet the benchmark validation criteria.

Inclusion Criteria:

  1. All patients consenting to total hip replacement
  2. All patients deemed suitable for total hip replacement
  3. All patients passing pre-assessment deeming them medically fit enough for total hip replacement.

Exclusion Criteria:

  1. Patients deemed unsuitable for Total Hip Replacement
  2. Patients who refuse to have surgery opting for other modes of treatment
  3. Patients who are unable to consent due to a lack of capacity
  4. Patients unable to understand English
  5. Any patient under the age of 18 years.
  6. Patients who are pregnant or breast feeding
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01721278

Contact: Justin Cobb, MCh FRCS 02033117687
Contact: Hardeep Johal, BSc (Hons) 020 33115216

United Kingdom
Charing Cross hospital Recruiting
London, United Kingdom, w6 8rf
Contact: Hardeep Johal, BSc (Hons)    020 33115216   
Sponsors and Collaborators
Imperial College London
Joint Replacement Instrumented Orthopaedics Ltd
Principal Investigator: Professor Justin Cobb, MCh FRCS Imperial College London
  More Information

Responsible Party: Imperial College London Identifier: NCT01721278     History of Changes
Other Study ID Numbers: 12/LO/0768
Study First Received: October 16, 2012
Last Updated: January 12, 2016 processed this record on June 23, 2017