MatriGraft® | Knee

Revision Total Knee Arthroplasty

In revision total knee arthroplasty (TKA), femoral head allografts are used to manage large bone defects that can occur due to osteolysis, loosening of the implant, infection, or fracture. These defects can affect the stability of the joint and the ability to correctly align the new prosthetic components. Femoral head allografts provide immediate mechanical stability, allowing for accurate alignment and fixation of the prosthesis.

Decompression in Tibial Plateau Fracture

The use of an intraosseous fibular shaft allograft to open reduction and internal fixation in select cases of depressed posterolateral tibial plateau fractures allows both reduction of the joint and stabilization of the articular segment through a single approach familiar to many orthopedic surgeons.

High Tibial Osteotomy (HTO)

High Tibial Osteotomy (HTO) is a surgical procedure used to correct knee malalignment and relieve pressure on the knee joint, often due to osteoarthritis in one compartment of the knee. There are two main types of HTO: closing-wedge and opening-wedge. In opening-wedge HTO, an osteotomy is made in the upper part of the tibia, creating a wedge-shaped space. Allograft bone wedges are used to fill this space, providing the necessary structural support and stimulating bone healing in the osteotomy site.

Limb Salvage Procedures

Limb salvage procedures are a series of surgical treatments aimed at saving a limb that is at high risk of amputation. Sometimes, a section of bone needs to be removed due to infection (osteomyelitis) or a bone tumor. Once the diseased bone is removed, the bone shaft allograft can be used to fill the gap. It is carefully aligned and fixed into place. Over time, the patient’s own bone may gradually incorporate the allograft.

Joint Arthrodesis

Allograft bone shafts can be utilized in joint arthrodesis procedures, which involve fusing two adjacent bones to stabilize a joint. This procedure is typically reserved for conditions where joint replacement is not an option or has failed, or when the joint’s function is severely compromised due to arthritis, injury, or disease. The allograft shaft can be used to promote fusion and provide stability in joints such as the ankle, wrist, or spine.

Revision Total Joint Arthroplasty

In revision joint replacement surgeries, such as hip, knee, and shoulder replacements, structural allografts can be used to fill in areas of significant bone loss around the joint. This is particularly important when previous implants have loosened or failed and caused damage to the surrounding bone. The grafts can help provide a stable platform for the placement of the new prosthesis.

Non-Union Treatment

Allograft bone struts can be used in the treatment of bone defects that have failed to heal (non-unions), especially when there is a need for additional mechanical support. The strut is placed over the non-union site to provide stability and facilitate bone healing.

Revision Total Joint Arthroplasty

In complex joint revision surgeries, allograft bone struts are used to provide structural support in situations where there is significant bone loss. The struts are typically used in conjunction with other reconstruction techniques to fill bony defects and enhance stability for the prosthesis.

Application of Allograft Prosthetic Composite (APC) Constructs in Revision Arthroplasty

Allograft Prosthetic Composites (APCs) are utilized in joint revision arthroplasty procedures to address complex cases where significant bone loss or structural defects are present. These composites combine a prosthetic component with allograft material to restore joint function and stability. They provide biological support for bone ingrowth and incorporation, ensuring long-term stability while reducing the need for excessive reliance on bone cement or metal augmentations.

Application of Allograft Prosthetic Composite (APC) Constructs in Oncologic Orthopedic Surgery/Limb Salvage Procedures

Allograft-Prosthetic Composites (APCs) are used in orthopedic oncology for limb salvage operations following tumor resection. In such cases, a large bone tumor is surgically removed, often resulting in a significant loss of bone and soft tissue. To restore function and structure, an allograft can be used in combination with a prosthesis. The allograft can provide a biological scaffold for the patient’s tissues to grow and heal, while the prosthesis offers immediate mechanical support and stability.