Reconstruction of the sliding apparatus of the tendon graft with a vascularized fascial flap in the experiment

Three types of the reconstruction technique of free tendinous graft sliding apparatus were studied in 30 dogs using vascularized fascial flap on a vascular bundle. Type I - tendinous graft was sutured to margin of the fascial flap parallel to the axis of the vascular bundle; type II - tendinous graft was placed parallel to the axis of the vascular bundle and wrapped by the margins of the fascial flap; type III - two tendinous grafts were wrapped by free margins of the single fascial flap. To model the conditions of the fibrous canal of digitorus flexor tendons devoid blood supply and innervation, the capsule of the free fascial graft taking from the broad fascia was formed around the fascial flap with tendinous graft. The axial movements of tendinous grafts and external fascial capsula as well as morphologic changes in the experimental connective tissue structures were studied on days 7, 10, 14, 21, 28. Mean range of movement was of sinusoidal dynamics and made up 11.8, 19.2, 20.0, 17.75 and 18.6 mm, respectively. The range of movement of fascial capsule relative to surrounding muscular tissues was 1-3 mm and did not undergo changes at long-term observation.