femoral head allograft
What are the Sources of Allografts. Natural bone matrix facilitates cell attachment and proliferation and vascular in-growth.
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The female reamer corresponding to the same size male reamer used for reaming the defect is used to decorticate the allograft.
. Product Specifications MatriGraft Femoral Head Femoral and humeral heads designed to provide immediate structural support to restore segmental bone loss or to be ground into corticalcancellous chips Osteoconductive. Compared freeze-dried with frozen allografts from a single manufacturer in a prospective randomized study with a minimum follow-up of 24 months. Femoral head allograft for tibiotalocalcaneal fusion using a cup and cone reamer technique Abstract End-stage degenerative joint disease of the hindfoot with large structural bone deficits is a complex problem encountered by the foot and ankle surgeon.
When the joint is resected in a square fashion length is actually lost from the first metatarsal head. One of the advantages of this type of allograft is its ability to preserve limb length 1 2 3 because. Our tissue banks provide bone grafts for virtually every orthopedic podiatric and reconstructive operation.
We have more options than those listed below and can review the available options and sizes with you. An allograft is different from an autograft which utilizes tissue from the same individuals body and is therefore genetically identical. Please contact us for information on any graft you need.
The average femoral head allograft is 54 to 56 mm in diameter and yields 50 cm 3 of bone graft with an average cost of US 435 for processing of the tissue resulting in a cost of US 870 per cm 3 of allograft produced. Femoral ring allograft has historically been one of the most common materials utilized in anterior lumbar interbody fusions. Half - view product sheet PDF 119KB Half - view technical specification PDF 194KB.
A tight fit is achieved by fine adjustments to the graft with a saw and this is used as a stem to place the graft into the site of the iliac osteotomy. Osteochondral Allografts Precut Fresh OCA Cores JRF Ortho now offers Precut Fresh OCA Cores for the treatment of full thickness osteochondral lesions. Anterior tibialis tendon frozen femoral head freeze dried bone chips DBM putty acellular dermis and amniotic membrane.
Orthopaedists are increasingly using femoral heads as bone grafts which can be easily stored by freezing without elaborate equipment and with minimum personnel involved. The femoral head has been processed to remove soft tissue cut in half longitudinally and washed to deplete cell and marrow content. However little has been reported in patients who receive tibiotalocalcaneal arthrodesis with femoral head allografts for a rigid cavovarus foot type.
The Allograft OATS donor harvester with a collared guide pin is attached to the drill passed into the proximal graft housing and rested on the grafts surface. A calibrated spherometer was then utilized to make sure the. In our experience the use of frozen femoral head is an ideal structural allograft for the treatment of large bone deficits that require fusion.
A fresh-frozen femoral head allograft can provide an appropriate graft for lengthening and ultimate fusion. Examples of human allografts include. Our experience has shown that if standard sterile techniques are followed in procurement and storage an abundant supply of useful allografts can be ensured.
A fresh osteochondral allograft ordered from the Joint Restoration Foundation Centennial CO USA was press-fitted into the resulting 30 mm wide cylindrical femoral head defect. The Cores are produced using the same cartilage processing method as all OCA grafts distributed by JRF Ortho and have viable hyaline cartilage for a superior biomechanical and durable repair. It has been freeze dried sterilized with gamma irradiation and has an approximate weight of 20g.
Tibiotalocalcaneal TTC arthrodesis with bulk femoral head allograft is a commonly performed limb salvage procedure when dealing with complex deformity. The femoral head allograft is used for resurfacing cartilage defects with mature hyaline cartilage. Studies show that osteochondral allografts transplanted within 15 to 28 days of recovery have significant functional and clinical advantages.
It has been well-documented in published studies that larger grafts at this site increase the risk of complications. Autografting with the removed femoral head has been used for several decades to achieve better coverage but the long-term benefits of this technique remain controversial with some series reporting high rates of graft resorption and collapse. The resected femoral head is then used as a graft with the base of the neck cut into a wedge matching the chamfer on the iliac osteotomy Figures Figures11and and22.
The donor graft surface curvature was congruent with the radius of the host femoral head Figure 4b. Femoral Head Allograft Preparation The donor femoral head allograft is secured in the Arthrex Allograft OATS Workstation and perpendicular alignment is confirmed with the OATS sizer. These fusions are technically challenging and often involve harvesting large autografts from the iliac crest.
An allograft femoral head is thawed in a warm saline bath at the beginning of the procedure and placed in the bone vice Allogrip Bone Vise DePuy Warsaw IN with the three limbs of the vice gripping the femoral neck. The technique described involves a less complex reproducible 1-stage reconstruction for large talar defects using a transfibular approach with placement of a femoral head allograft in a fusion bed prepared by acetabular reamers. RELATED ARTICLES PRODUCT SHEETS SURGICAL TECHNIQUES RELATED ALLOGRAFTS Features and Benefits.
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