A Prospective Analysis of Long-Term Clinical Outcomes and 3D Spine Growth in Anterior Vertebral Body Tethering

NCT ID: NCT04914507

Last Updated: 2023-11-15

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

106 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-09-09

Study Completion Date

2029-09-30

Brief Summary

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Anterior vertebral body tethering (AVBT) is a novel, minimally invasive, growth modulation technique that was recently approved by the FDA under a Humanitarian Device Exemption (HDE). The goal of AVBT is to control curve progression by applying compression on the convex side of the spine deformity. While there has been great initial enthusiasm about the technique as an alternate treatment option to spinal fusion for skeletally immature children with scoliosis, there is a need to better understand the long-term outcomes.

The purpose of this study is to report the long-term clinical outcomes of skeletally immature patients treated with AVBT, specifically:

1. The effect on three-dimensional spine growth as compared to normal controls
2. Maintenance of major Cobb angle less than or equal to 50 degrees at skeletal maturity
3. Complications associated with both the procedure and the device

Detailed Description

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Conditions

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Scoliosis Idiopathic

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Anterior Vertebral Body Tethering

The subject is will receive anterior vertebral body tethering surgery, as clinically indicated, after all pre-operative assessments are complete.

Group Type OTHER

Anterior Vertebral Body Tethering

Intervention Type DEVICE

Subject will receive anterior vertebral body tethering surgery.

Interventions

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Anterior Vertebral Body Tethering

Subject will receive anterior vertebral body tethering surgery.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Diagnosis of idiopathic scoliosis
* Planned recipient of AVBT surgical treatment
* Skeletally immature
* Major Cobb angle ≥30° and ≤65°
* Osseous structure dimensionally adequate to accommodate screw fixation, as determined by radiographic imaging
* Failed or intolerant to bracing

Exclusion Criteria

* Presence of any systemic infection, local infection, or skin compromise at the anticipated surgical site
* Prior spinal surgery at the level(s) to be treated
* Evidence of documented poor bone quality
* Any other medical or surgical condition which would preclude the potential benefit of spinal surgery, such as coagulation disorders, allergies to the implant materials, and patient's unwillingness or inability to cooperate with post-operative care instructions as determined by the treating physician
* Unwillingness, inability, or living situation (e.g. custody arrangements, homelessness, detention) that would preclude ability to return to the study site for follow-up visits as described in protocol and Informed Consent
* Unwillingness to sign Informed Consent Form and participate in study procedures
Maximum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Pediatric Spine Foundation

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Ron El-Hawary, MD

Role: PRINCIPAL_INVESTIGATOR

Dalhousie University

Locations

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Children's National Hospital

Washington D.C., District of Columbia, United States

Site Status RECRUITING

Shriners Children's Chicago

Chicago, Illinois, United States

Site Status RECRUITING

Gillette Children's Specialty Healthcare

Saint Paul, Minnesota, United States

Site Status RECRUITING

Washington University

St Louis, Missouri, United States

Site Status RECRUITING

Morgan Stanley Childrens Hospital of New York-Presbyterian

New York, New York, United States

Site Status RECRUITING

Cincinnati Children's Hospital Medical Center

Cincinnati, Ohio, United States

Site Status RECRUITING

Shriners Children's Portland

Portland, Oregon, United States

Site Status RECRUITING

Children's Hospital of Philadelphia

Philadelphia, Pennsylvania, United States

Site Status RECRUITING

The Medical University of South Carolina

Charleston, South Carolina, United States

Site Status RECRUITING

Vanderbilt University

Nashville, Tennessee, United States

Site Status RECRUITING

Primary Children's Hospital

Salt Lake City, Utah, United States

Site Status RECRUITING

Children's Hospital of Eastern Ontario

Ottawa, Ontario, Canada

Site Status RECRUITING

Countries

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United States Canada

Central Contacts

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Tyler Farber

Role: CONTACT

3197501029

Tricia St. Hilaire

Role: CONTACT

4844106413

References

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Coghlan RF, Oberdorf JA, Sienko S, Aiona MD, Boston BA, Connelly KJ, Bahney C, LaRouche J, Almubarak SM, Coleman DT, Girkontaite I, von der Mark K, Lunstrum GP, Horton WA. A degradation fragment of type X collagen is a real-time marker for bone growth velocity. Sci Transl Med. 2017 Dec 6;9(419):eaan4669. doi: 10.1126/scitranslmed.aan4669.

Reference Type BACKGROUND
PMID: 29212713 (View on PubMed)

Trobisch P, Suess O, Schwab F. Idiopathic scoliosis. Dtsch Arztebl Int. 2010 Dec;107(49):875-83; quiz 884. doi: 10.3238/arztebl.2010.0875. Epub 2010 Dec 10.

Reference Type BACKGROUND
PMID: 21191550 (View on PubMed)

Karol LA, Johnston C, Mladenov K, Schochet P, Walters P, Browne RH. Pulmonary function following early thoracic fusion in non-neuromuscular scoliosis. J Bone Joint Surg Am. 2008 Jun;90(6):1272-81. doi: 10.2106/JBJS.G.00184.

Reference Type BACKGROUND
PMID: 18519321 (View on PubMed)

Samdani AF, Ames RJ, Kimball JS, Pahys JM, Grewal H, Pelletier GJ, Betz RR. Anterior vertebral body tethering for immature adolescent idiopathic scoliosis: one-year results on the first 32 patients. Eur Spine J. 2015 Jul;24(7):1533-9. doi: 10.1007/s00586-014-3706-z. Epub 2014 Dec 16.

Reference Type BACKGROUND
PMID: 25510515 (View on PubMed)

Crawford CH 3rd, Lenke LG. Growth modulation by means of anterior tethering resulting in progressive correction of juvenile idiopathic scoliosis: a case report. J Bone Joint Surg Am. 2010 Jan;92(1):202-9. doi: 10.2106/JBJS.H.01728. No abstract available.

Reference Type BACKGROUND
PMID: 20048114 (View on PubMed)

Samdani AF, Ames RJ, Kimball JS, Pahys JM, Grewal H, Pelletier GJ, Betz RR. Anterior vertebral body tethering for idiopathic scoliosis: two-year results. Spine (Phila Pa 1976). 2014 Sep 15;39(20):1688-93. doi: 10.1097/BRS.0000000000000472.

Reference Type BACKGROUND
PMID: 24921854 (View on PubMed)

Miyanji F, Pawelek J, Nasto LA, Rushton P, Simmonds A, Parent S. Safety and efficacy of anterior vertebral body tethering in the treatment of idiopathic scoliosis. Bone Joint J. 2020 Dec;102-B(12):1703-1708. doi: 10.1302/0301-620X.102B12.BJJ-2020-0426.R1.

Reference Type BACKGROUND
PMID: 33249889 (View on PubMed)

Spurway AJ, Hurry JK, Gauthier L, Orlik B, Chukwunyerenwa CK, Kishta WE, El-Hawary R. Three-dimensional True Spine Length: A Novel Technique for Assessing the Outcomes of Scoliosis Surgery. J Pediatr Orthop. 2017 Dec;37(8):e631-e637. doi: 10.1097/BPO.0000000000001031.

Reference Type BACKGROUND
PMID: 28614286 (View on PubMed)

Sarwahi V, Wendolowski S, Gecelter R, Maguire K, Gambassi M, Orlando D, Lo Y, Amaral T. When Do Patients Return to Physical Activities and Athletics After Scoliosis Surgery?: A Validated Patient Questionnaire Based Study. Spine (Phila Pa 1976). 2018 Feb 1;43(3):167-171. doi: 10.1097/BRS.0000000000002284.

Reference Type BACKGROUND
PMID: 28604495 (View on PubMed)

Other Identifiers

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PSSG0121

Identifier Type: -

Identifier Source: org_study_id

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