Flexor tendon healing and adhesion formation after Sterispon wrapping: a study in the rabbit

The influence of Sterispon (Allen & Hanbury) wrapping on the healing of the rabbit flexor digitorum profundus tendon sutured within the digital sheath was studied. Control tendons healed in 2 weeks in association with thick adhesions. The wrapped tendons were surrounded with fewer adhesions, but 50% separated. Healing was delayed until adhesions reached the suture site. A sheath of a single layer of mesothelial cells formed on the surface of the Sterispon opposite the tendon and this markedly reduced adhesions at the suture site. The cellular reaction was bland. Sterispon wrapping had a similar effect on tendon healing and adhesion formation as wrapping with other non-absorbable substances and the results support the theory that healing in the digital sheath is necessarily mediated through the formation of adhesions. Sterispon wrapping has been helpful after tenolysis operations.