[Healing of "wire tunnels" in tibial diaphysis: data of local X-ray study and densitometry].
Fifteen pelvic extremities from adult dogs were used to perform 60 cross tunnelization of tibial diaphysis with a wire having a pointed groove, 1.8-mm in diameter, at 1,500 rpm. Thirty five leg X-ray films in the lateral projection, which show changes on days 30, 60, 90, 120, 520 after the experiment, were studied. Bony diaphysis tunnelization was found to give rise to a regeneration focus wherein an area of tissue element degradation and an area of introduction of bony fragments into soft tissues were detectable. Changes in the regeneration focus were determined by a response to osseous fragments, which involved the formation of an bony regenerate during a month and to the resorption of the bony matter of an osseous regenerate and osseous fragments in future. Healing of diaphysis defects began with the resorption of a damaged cortical layer. Osteogenesis prevailed at month 2 and ensured healing of cortical layer defects following 4-6 months.
Shevtsov
V I
VI
G.A. Ilizarov Russian Research Center Reparative Traumatology and Orthopedics, Kurgan.
Bunov
V S
VS
Osipova
E V
EV
Gordievskikh
N I
NI
Bunov
D V
DV
D015502:Absorptiometry, Photon; D000818:Animals; D001864:Bone Wires; D018483:Diaphyses / Q000000981:diagnostic imaging / Q000293:injuries / Q000502:physiology; D004285:Dogs; D017102:Fracture Healing / Q000502:physiology*; D023421:Models, Animal; D013977:Tibia / Q000000981:diagnostic imaging* / Q000293:injuries