ACL Program | BEAR® Trial Eligibility Criteria

The BEAR III study is not enrolling.

To learn more about the BEAR III trial, please email

Patients who may be eligible for the study:

  • will be ages 12 to 35
  • will be seen within 3 weeks of injury by a Boston Children’s Hospital participating surgeon
  • cannot have a history of prior ACL surgery on the affected knee
  • must not use tobacco, corticosteroids, or have a history of diabetes or inflammatory arthritis or any condition that could affect healing
  • BMI <35 (will be measured in clinic)
  • must not have an allergy to bovine collagen (cow protein)

Download our brochure to learn more about the Bridge-enhanced ACL repair (the BEAR procedure).