Trace Orthopedics is developing a device and needle-based method to reattach partially torn tendons to bone without surgery or a visit to the operating room. Founded by biomedical engineer Adam Greenspan and musculoskeletal radiologist William B. Morrison, the Philadelphia medical-device company is testing its Trace Method in a human cadaveric hip model while pursuing product development and FDA clearance. Its approach is intended to let surgeons perform tendon repair percutaneously, potentially reducing recovery time and treatment costs.