A preliminary study of reconstruction of the monkey temporomandibular joint with autogenous tissues.
OBJECTIVE
This study investigated the ability of autogenous pericranium-muscle and cranial bone to restore form and function of the temporomandibular joint (TMJ).


METHODS
A right TMJ discectomy, condylectomy, vertical ramus osteotomy with superior repositioning of the proximal fragment, and a cranial bone graft to the mandibular angle were performed in 12 cynomolgus monkeys. Clinical, histologic, and autoradiographic evaluation was done at intervals beginning at 3 days and continuing up to 78 weeks.


RESULTS
No significant postoperative sequela were identified in any of the monkeys. Jaw mobility and function were restored. Gross morphologic condylar changes were observed. The pericranium-muscle grafts did not differentiate into normal disc-like structures and a cartilage cap did not cover the condyle stump head.


CONCLUSIONS
The results of this study suggest that the previous TMJ function was restored. However, the histologic changes observed were consistent with advanced degenerative joint disease.
Marciani
R D
RD
Department of Veterans Affairs, Lexington, KY, USA.
Gonty
A A
AA
White
D K
DK
Traurig
H H
HH
D000818:Animals; D001345:Autoradiography; D016025:Bone Transplantation / Q000379:methods*; D005500:Follow-Up Studies; D008252:Macaca fascicularis; D010027:Osteotomy / Q000379:methods; D010521:Periosteum / Q000637:transplantation; D012886:Skull; D013536:Suture Techniques; D013704:Temporomandibular Joint / Q000473:pathology / Q000601:surgery*; D013997:Time Factors; D014182:Transplantation, Autologous