slide 1 of 2, Quad sets, 1  Sit with your leg straight and supported on the floor or a firm bed. 2  Tighten the muscles on top of your thigh by pressing the back of your knee flat down to the floor. 3  Hold for about 6 seconds, then rest up to 10 seconds. 4  Do this for 8 to 12 repetitions several times a day.
Allograft definition, a tissue or organ obtained from one member of a species and grafted to a genetically dissimilar member of the same species. See more. Dictionary.com
1 Allograft as a supplement to the patientâs own bone. 2  Allograft chips may be used to augment the patientâs own bone in a posterolateral gutter fusion. 3  It also may be used if more bone graft is needed in more extensive fusion procedures, such as spinal fusion for adolescent scoliosis.owever, there are two main drawbacks. 1  Lower chance of fusion. 2  Because allograft bone does not contain living bone cells, it is not as effective at stimulating fusion as the patientâs own bone. 3  See Failed Spinal Fusion Surgery. 4  Risk of disease transmission.