A Study Evaluating Amplex Compared To Autograft Bone In Foot and Ankle Fusion Surgery

BioSurface Engineering Technologies

Status and phase

Unknown

Phase 2

Phase 1

Conditions

Arthritis

Treatments

Device: Amplex

Procedure: Autograft bone

Study type

Interventional

Funder types

Industry

Identifiers

NCT01224119

AMX-200

Details and patient eligibility

About

The current research study evaluates an investigational medical device called Amplex B2A(TM) Peptide Enhanced Ceramic Granules ("Amplex") for use in foot and ankle fusion. Amplex is a synthetic bone graft material. The most frequently used graft material is bone collected from the patient (autograft). Autograft involves a secondary incision with the risks of infection and lasting pain.

The purpose of this study is to determine if Amplex is a safe and effective alternative to autograft.

Enrollment

24 estimated patients

Sex

All

Ages

18 to 75 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Indicated for foot and ankle surgery described as either a single, double or triple arthrodesis of the ankle, subtalar, calcaneocuboid or talonavicular joints.
Have the ability to understand the requirements of the study, to provide written informed consent, and to comply with the study protocol
Have the ability to understand and provide written authorization for the use and disclosure of personal health information (PHI)
Be a skeletally mature male or a non-pregnant, non-lactating female at least 18 years of age but not older than age 75
If a woman is of childbearing potential (not amenorrheic for the previous 24 months or not surgically sterile), then she must:
- Have a confirmed negative urine pregnancy test result prior to surgery and the administration of the study product
- Agree to use a medically approved method of contraception for the duration of the initial follow-up period of the study
Agree to participate in postoperative clinical and radiographic evaluations and comply with the required study regimen
Have not been sufficiently responsive to an adequate trial of non-operative treatment (e.g. modified activity, analgesics, anti-inflammatories, bracing, orthotics, physiotherapy, vitamin supplements, or injections etc. prior to study enrollment).

Exclusion criteria

Has a large bone deficit requiring a structural graft
Charcot joints from neuropathic destruction.
Previous fusion or osteotomy of the proposed site
Requires osteotomy or fusion of the midfoot joints
Morbidly obese (BMI >45 kg/m2)
Women planning to become pregnant during the first year (12 months) following the procedure
Female subjects of childbearing potential unwilling to use medically acceptable contraceptive methods (e.g., surgical sterilization, hormonal contraceptives, barrier methods, or intrauterine devices) so as to prevent pregnancy for 12 months following the study procedure
Have at the time of surgery a systemic infection or local infection at the site of surgery
Have an active history of systemic malignancy.
Currently has untreated malignant neoplasm(s), or is currently undergoing radio- or chemotherapy or has been diagnosed with hypercalcemia.
Have a medical condition, serious intercurrent illness, or extenuating circumstance that, in the opinion of the Investigator, would preclude participation in the study or potentially decrease survival or interfere with ambulation or rehabilitation (e.g., histories of transient ischemic attack, stroke or liver disease)
Has a known complication of diabetes (e.g. retinopathy, renal failure, neuropathic complication in lower limb).
Uncontrolled diabetes. If the patient has been diagnosed with diabetes, they must have an Hgb A1C level less than 7 to participate.
Have a known hypersensitivity to any of the components of the product [e.g., Hydroxyapatite (HA): Tricalcium Phosphate (TCP) ceramic granule] or a known titanium allergy
Receiving active treatment with a drug known to interfere with bone metabolism (e.g. long-term steroid therapy, methotrexate).
Have a history of any severe allergy or anaphylaxis, or a history of hypersensitivity to protein pharmaceuticals (e.g., monoclonal antibodies or gamma globulins, recombinant BMPs)
Being treated with a bone growth stimulator
Have a medical condition requiring radiation, chemotherapy or immunosuppression.
Have obvious and/or documented alcohol or illicit drug addictions
Are prisoners
Have participated in clinical studies evaluating investigational devices, pharmaceuticals or biologics within 3 months of enrollment
Have previously been treated with, or exposed to, therapeutic levels of Bone Morphogenetic Proteins (BMPs), i.e., synthetic or recombinant
Have a documented medical history of or radiographic evidence of a metabolic bone disease (e.g., avascular necrosis, osteoporosis or osteopenia) or other condition that would negatively impact the bone healing process (e.g. history of Paget's disease, osteomalacia, or other osteodystrophy) or preclude the subject from receiving screw fixation.
Require chronic SQ or IV heparin therapies