Arthrex's approach to osteochondral fixation and transplant within arthroscopic procedures for the knee includes Chondral Dart, Bio-Compression Screws, OATS and Allografts OATS product families. For more information on these families and products within them, refer to&nbsp;<a href="https://www.arthrex.com/knee/osteochondral-fixation" title="Osteochondral Fixation">Osteochondral Fixation</a>&nbsp;and&nbsp;<a href="https://www.arthrex.com/knee/osteochondral-transplant" title="Osteochondral Transplant">Osteochondral Transplant</a>.

Knee

Product

The 2.7 mm Bio-Compression Screw eliminates the challenges of metal screw removal, soft tissue impingement, and unwelcome image scatter. For fracture and osteotomy fixation in periarticular applications, this screw offers interfragmentary compression and a headless profile to promote healing. Produced from solid enhanced PLLA and designed for excellent thread-to-bone contact, the Bio-Compression Screw provides excellent strength during insertion and through healing. Using a stepped thread pitch and a taper, this screw draws two fragments together without the need to overdrill/lag the proximal bone fragment. And since the Bio-Compression Screw is headless and absorbable, it offers zero prominence above the cortex and is not visible on x-ray. This is as close to a natural repair as possible. A simple, low cost instrumentation set ensures proper drill depth and tapping with no guesswork.

Bio-Compression Screws

The bioabsorbable PLLA Chondral Dart™ has a unique, double reversed barbed design to facilitate superior fixation and compression of osteochondral flap tears up to 2 cm in diameter. The 18 mm long, 1.3 mm diameter Chondral Dart provides secure fixation under the hyaline cartilage surface to eliminate contact with sensitive articulating surfaces.

Chondral Dart

Osteochondral Fixation

Human

The Arthrex approach to osteochondral fixation includes the&nbsp;<a href="https://www.arthrex.com/knee/chondral-dart" title="Chondral Dart">Chondral Dart</a>&nbsp;a bioabsorbable PLLA Chondral Dart featuring a unique, double reversed barbed design, and&nbsp;<a href="https://www.arthrex.com/knee/biocompression-screws" title="Bio-Compression Screws">Bio-Compression Screws</a>&nbsp;offering interfragmentary compression and a headless profile to promote healing.&nbsp;

Secondary (C)

The disposable donor and recipient cutting tube sets of the Osteochondral Autograft Transfer System (OATS) facilitate harvesting of various diameter osteochondral/hyaline cartilage cylinders from a donor site superior and lateral to the notch or above the sulcus terminalis. A recipient socket, sized to the proper depth, is created in the chondral defect to accept the donor graft. The bone cylinder is inserted with a collared pin delivery system for press-fit fixation. Harvesting and insertion depth are controlled with 5 mm depth markings. Final seating of the harvested cylinder, flush with the surrounding articular cartilage, is achieved with a slightly larger diameter Sizer/Tamp.

Autograft OATS®

The Allograft OATS instrument set facilitates harvesting of large-diameter osteochondral/hyaline cartilage cylinders from allograft bone. The core is made by placing the condyle into the workstation and harvesting with the donor harvester. A 0.5 mm-undersized recipient socket is created using the appropriately sized recipient harvester. The exact depth of the allograft to match the socket is obtained with the depth measurement guide and the allograft is trimmed to the same depth and obliquity. Dilation of the socket results in a line-to-line fit once the donor allograft is inserted into the recipient socket. Final seating of the allograft is achieved with an oversized tamp, resulting in a perfectly flush, press-fit graft that does not require fixation implants.

Allograft OATS® Set, Large

Osteochondral Transplant

The Arthrex approach to osteochondral transplant is the&nbsp;<a href="https://www.arthrex.com/knee/allograft-oats-large" title="Allograft OATS® Set, Large">Allograft OATS®&nbsp;Set, Large</a>; a family of orthobiologic products that facilitate harvesting of large diameter osteochondral/hyaline cartilage cylinders from an allograft bone.&nbsp;

Osteochondral Fixation and Transplant

Osteochondral Fixation

Osteochondral Transplant