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THE VASCULAR ANATOMY WITHIN NORMAL TENDONS, DIVIDED TENDONS, FREE TENDON GRAFTS AND PEDICLE TENDON GRAFTS IN RABBITS

A Microradioangiographic Study

D. M. Chaplin 1

1 United Birmingham Hospitals; Birmingham, England

1. The normal vascular anatomy of flexor tendons and extensor tendons in the hind limb of the rabbit is outlined. A marked difference between a tendon in a sheath and a tendon with a paratenon is shown, the latter having a much better blood supply.

2. The vascular reaction in flexor tendon divided within a sheath is shown.

3. The revascularisation of free grafts is illustrated and the differences between tendon with sheath and tendon with paratenon are detailed.

4. Experiments are reported to show that the microcirculation within a "vascular" tendon can support a pedicle graft in the rabbit. Such pedicle grafts are shown to be inferior to free grafts of "avascular" tendon, but the vascularity within the pedicle tendon graft may be modified by "blocking" the surface with silastic tubing.

5. The implications of this work on tendon grafting are discussed, together with a review of additional experimental work in related fields.
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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General