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Study of the Surgical Treatment of Early Onset Scoliosis Using a Non-invasive Growing Rod

This study is currently recruiting participants. (see Contacts and Locations)
Verified October 2013 by Surgi C Limited
Information provided by (Responsible Party):
Surgi C Limited Identifier:
First received: May 27, 2011
Last updated: October 15, 2013
Last verified: October 2013

It is current practice for children who have surgery for early onset scoliosis (EOS) to be treated with insertion of extendable implants known as growth rod systems. This allows the growth potential of the child to be maximised during the period of growth. However, the child must undergo an average of 6 further surgeries to lengthen the rods every 6 months. Sometimes this may continue for several years. This requires repeated general anaesthesia and places the patient at risk of complications as well as on-going costs to the hospital with each admission and theatre episode.

Magec is a magnetic growth rod from Ellipse technologies (distributed by SurgiC). The rod is inserted in exactly the same way as the conventional growth rod systems. The base implants i.e screws and hooks remain the preferred choice of the user. The only change is that a different rod is used.

There are several advantages to this device. Firstly, after the initial insertion, further lengthenings, unlike current systems, do not need to be carried out in theatre under a general anaesthetic. In contrast, they can be done in an outpatients setting with a non-invasive technique. The rods are lengthened using an external magnetic device. The lengthenings are done in a controlled manner using an age related growth guide. Thirdly, the change from a theatre based intervention to an outpatient procedure will have cost-savings. The investigators also believe that there will be psychosocial benefits to the child and family by the avoiding the stress associated with repeated surgery at such a young age.

In terms of risk assessment the device does not place the child at any more risk than would be expected from inserting any of the existing systems. In the event of failure of the rods the worst outcome is a revision to conventional rods.


Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: A Prospective Cohort Study of the Surgical Treatment of Early Onset Scoliosis Using a Remotely Expandable Device for Non-invasive Lengthening of a Growing Rod (Magec™) and Its Performance in Prevention of Progression of Scoliosis.

Resource links provided by NLM:

Further study details as provided by Surgi C Limited:

Primary Outcome Measures:
  • To Assess the Safety and effectiveness of a Magnetic Growth Rod [ Time Frame: 2 Years From Final Recruitment Date ] [ Designated as safety issue: Yes ]

Estimated Enrollment: 50
Study Start Date: January 2012
Estimated Study Completion Date: January 2015
Estimated Primary Completion Date: January 2014 (Final data collection date for primary outcome measure)

Ages Eligible for Study:   2 Years to 10 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population

Study population will be recruited from secondary care


Inclusion Criteria:

  1. Patient aged 2 - 10 years (male/female) with EOS and growth potential
  2. Patient who surgeon feels would benefit from the implantation of a growth rod
  3. Patient must be of appropriate size and age for use of the device
  4. Patient's guardian is willing and able to give informed consent for participation in the study
  5. Patient (and guardian) is willing and able to return for all follow-up visits and study related procedures
  6. The patient's guardian is willing to allow his or her General Practitioner and consultant, if appropriate, to be notified of participation in the study

Exclusion Criteria:

  • The participant may not enter the study if ANY of the following apply:

    1. Conversion patients with prior construct problems
    2. Previous diagnosis of post-operative spinal infection or wound complication
    3. Conversion patients with more than 3 previous distractions, or more than 2 years since initial surgery
    4. Patients with prior failure of other devices
    5. Any other significant disease or disorder which, in the opinion of the Investigator, may either put the participants at risk because of participation in the study, or may influence the result of the study, or the participant's ability to participate in the study
    6. Participants who have participated in another research study involving an investigational product in the past 12 weeks
  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: NCT01362881

United Kingdom
Leeds Teaching Hospitals Recruiting
Leeds, United Kingdom
Contact: Peter Millner   
Royal National Orthopaedic Hospital Recruiting
London, United Kingdom
Contact: Hilali Noordeen   
Oxford University NHS Trust Active, not recruiting
Oxford, United Kingdom
Sponsors and Collaborators
Surgi C Limited
Principal Investigator: Colin Nnadi Consultant Surgeon
  More Information

No publications provided

Responsible Party: Surgi C Limited Identifier: NCT01362881     History of Changes
Other Study ID Numbers: SC-11-001
Study First Received: May 27, 2011
Last Updated: October 15, 2013
Health Authority: United Kingdom: Research Ethics Committee

Keywords provided by Surgi C Limited:

Additional relevant MeSH terms:
Bone Diseases
Musculoskeletal Diseases
Spinal Curvatures
Spinal Diseases processed this record on November 25, 2014