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INFANTILE PSEUDARTHROSIS OF THE TIBIA

Three Cases Treated Successfully by Delayed Autogenous By-pass Graft, with Some Comments on the Causative Lesion



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Abstract

1. Three cases of infantile pseudarthrosis of the tibia treated successfully by delayed autogenous by-pass graft are reported.

2. The delayed autogenous graft is stouter, stronger and more easily handled and has enhanced osteogenic properties than a graft transferred immediately.

3. The by-pass graft commends itself, firstly, because it does not disturb the pseudarthrosis, which in consequence helps the immobilisation of the graft; secondly, because it is well embedded in healthy bone above and below, well away from the abnormal bone; thirdly, because it lies under compression and, ideally, is vertically disposed between the knee and the ankle; and fourthly, because there is no devitalising stripping of periosteum or introduction of foreign bodies.

4. Support to the grafted leg is needed for at least five years, but only by a polythene splint after four to six months.

5. With early grafting the deformity straightens out and shortening is overcome, as there is early return to normal use of the limb.

6. Prolonged follow-up is called for lest the basic lesion in the tibia should extend.

7. Fibrous dysplasia and similar fibrous lesions of bone account for many cases of infantile pseudarthrosis of the tibia. Many of these lesions are congenital and subsequently lead to fracture.

8. Postponement of surgery should not be countenanced.

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