Case study

Use of Allogran-R® in L4 to S1 instrumented posterolateral fusion

Courtesy of Courtesy of Oswestry, UK


A female patient aged 55 presented with grade I spondylolisthesis at the L5 / S1 level. Marked facet joint arthrosis at the L5 / S1 level was apparent.

Figures 1 and 2






The lateral gutters and facets of S1, L5 and L4 were decorticated with a burr. Allogran-R and autograft was laid over the decorticated surfaces. Pedicle screws were inserted, and rods were then contoured and applied. The site was then closed.

Figures 3 & 4 - Intra-operative x-rays




Post operative

The patient demonstrated good movement.

Figures 5 & 6 - Post operative x-rays






At two months follow-up, the x-rays indicated early fusion in the lateral gutters.

The patient reported very little pain and was pleased with the outcome.

Figures 7 and 8 - Two months post operatively


For indications, contraindications, warnings and precautions see Instructions for Use.

©2018, Biocomposites and Allogran are trademarks/registered trademarks of Biocomposites Ltd. All rights reserved. No unauthorised copying, reproduction, distributing or re-publication is allowed unless prior written permission is granted by the owner, Biocomposites Ltd.