Implant compositions and methods for tendon and ligament reattachment

A cannulated fiber implant for tendon or ligament graft fixation, the cannulated fiber implant comprising:

• a plurality of cut fibers comprising fibers selected from the group consisting of demineralized bone fibers (DBF), biocompatible polymer fibers, collagen fibers, resorbable polymer fibers, and a combination thereof,
• the plurality of cut fibers having a shape of a cannulated tubular prism with tapered ends and at least one protuberance, the implant having a width of about 3 to about 8 mm, a height of about 3 to about 10 mm, and a length of about 20 to 50 mm, and the at least one protuberance extending about 1 to 5 mm outward from the implant,
• optionally wherein the cannulated fiber implant is formed from demineralized bone fiber (DBF);
• optionally wherein the cannulated fiber implant comprises at least one protuberance;
• optionally wherein the cannulated fiber implant has a width of about 3 to about 8 mm, a height of about 3 to about 10 mm, and a length of about 20 to 50 mm;
• and
• optionally wherein the cannulation has a diameter of about 0.5 to about 4 mm;
• and has two protuberances along its length.

An implant system for augmenting reattachment of a tendon or ligament graft to a tunnel or socket in a bone, the implant system, comprising:

• the tendon or ligament graft;
• a cannulated interference screw;
• and
• a fiber implant, comprising a plurality of cut fibers comprising fibers selected from the group consisting of demineralized bone fibers (DBF), biocompatible polymer fibers, collagen fibers, resorbable polymer fibers, and a combination thereof, the fiber implant molded into a multi-edged rod shape having a diameter in a range from about 3 to about 15 mm and a length in a range from about 3 to about 15 mm,
• wherein the interference screw and the tendon or ligament graft are independently posited in the cavity or the tunnel in the bone, and
• wherein the fiber implant is posited in the cannulated interference screw.

An implant system for augmenting reattachment of a tendon or ligament graft to a bone, the implant system, comprising:

• the tendon or ligament graft;
• a fixation device attached to an end of the tendon or ligament graft with a suture;
• and
• the fiber implant comprising a plurality of cut fibers comprising fibers selected from the group consisting of demineralized bone fibers (DBF), biocompatible polymer fibers, collagen fibers, resorbable polymer fibers, and a combination thereof,
• wherein the plurality of cut fibers is molded into a shape selected from a tube or a truncated cone each having a center hole therein,
• wherein the fiber implant comprises one or more diameters of about 3 to about 15 mm and a length of about 10 to about 40 mm;
• and
• wherein the tendon or ligament graft with the attached fixation device is threaded through the central hole.