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Effect of Teriparatide on Fracture Healing in Patients With Incomplete Atypical Femur Fractures

Information source: University Health Network, Toronto
ClinicalTrials.gov processed this data on August 20, 2015
Link to the current ClinicalTrials.gov record.

Condition(s) targeted: Non Displaced Atypical Femoral Fractures

Intervention: Teriparatide 20 mcg (Biological)

Phase: Phase 3

Status: Recruiting

Sponsored by: University Health Network, Toronto

Official(s) and/or principal investigator(s):
Angela M Cheung, MD, PhD, Study Director, Affiliation: University Health Network, Toronto
Lianne E Tile, Md, MEd, Principal Investigator, Affiliation: University Health Network, Toronto

Overall contact:
Jasmin lakhesar, RN, Phone: 416-340-4843, Email: jasmine.lakhesar@uhn.ca


Atypical femur (thigh bone) fractures (AFFs) are uncommon low-trauma fractures which often occur without warning, are highly debilitating, and are slow to heal. As physicians learn more about them, AFFs are increasingly being identified prior to a total break. However, there's no evidence on the best way to treat these non-displaced AFFs. One option is teriparatide, an osteoporosis medication that can build new bone. Investigators will conduct a double blind randomized placebo controlled trial to examine whether teriparatide use in AFF patients with an incomplete break will help accelerate fracture healing and prevent surgical intervention. Co-primary outcomes include change in WOMAC scores from baseline to 12 months and number of participants requiring surgical intervention at 12 months. Investigators will recruit 60 women and men over the age of 30 who have experienced an incomplete AFF. Participants will be randomly assigned to either teriparatide (20 mcg/day) or placebo (using an identical injection pen) for up to 2 years. As AFFs are highly debilitating, a trial examining the use of Teriparatide in this population is urgently needed.

Clinical Details

Official title: Effect of Teriparatide on Fracture Healing in Patients With Incomplete Atypical Femur Fractures: a Randomized Controlled Trial

Study design: Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator, Outcomes Assessor), Primary Purpose: Treatment

Primary outcome:

Change in the modified The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC)of the affected limb (the femur that has the incomplete AFF)

The proportion of patients requiring surgical intervention


Minimum age: 30 Years. Maximum age: N/A. Gender(s): Both.


Inclusion Criteria: i. Female or male; ii. Over the age of 30; iii. Experienced an incomplete AFF that satisfies the diagnostic criteria as set forth by the American Society for Bone and Mineral Research (ASBMR) International Task Force on AFFs: 1. Atraumatic or low trauma incomplete stress fractures, defined as fractures sustained with minimal force, such as a fall from standing height; 2. From distal to the lesser trochanter to proximal to the supracondylar flare along the femoral shaft. 3. Radiographic confirmation of AFF features is required for a definitive diagnosis. Incomplete AFF features include cortical thickening, cortical beaking, and lucency line. Patients with cortical beaking without lucency line can be included. Exclusion Criteria: i. Peri-prosthetic fractures, ii. High trauma fractures, iii. Pathological fractures secondary to metastases or metabolic bone diseases other than osteoporosis, iv. Fractures that are not confirmed by radiological investigations, v. Contraindication to use of teriparatide such as: 1. pregnant or nursing mothers, or women who are planning on pregnancy within 1 year of completing teriparatide therapy, 2. hypersensitivity to teriparatide, 3. severe renal impairment, 4. multiple myeloma, 5. active cancer in past 5 years (other than non-melanoma skin cancer), 6. primary hyperparathyroidism, 7. hypercalcemia, 8. Paget's disease or other conditions that may increase the risk for osteosarcoma, 9. Prior radiation therapy involving the skeleton, vi. Concomitant use of other osteoporosis therapies including bisphosphonates or denosumab (except calcitonin). AFF patients with complete fractures on the contralateral side or patients with secondary osteoporosis will not be excluded.

Locations and Contacts

Jasmin lakhesar, RN, Phone: 416-340-4843, Email: jasmine.lakhesar@uhn.ca

University Health Network, Toronto, Ontario M5G 2C4, Canada; Recruiting
Jasmine lakhesar, RN, Phone: 416-340-4843, Email: jasmine.lakhesar@uhn.ca
Angela M Cheung, MD PhD, Principal Investigator
Lianne E Tile, Md MEd, Sub-Investigator
Additional Information

Starting date: July 2013
Last updated: May 28, 2015

Page last updated: August 20, 2015

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