Costochondral grafts in reconstruction of the temporomandibular joint after condylectomy: an experimental study in sheep

The purpose of this study was to investigate the effect of costochondral grafts in the temporomandibular joint (TMJ) in sheep. Five pure-bred adult Merino sheep were used. The condyle alone was resected and replaced with a costochondral graft from the 13th rib. The sheep were killed 3 months after o...

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Bibliographic Details
Published in:British journal of oral & maxillofacial surgery 2001-06, Vol.39 (3), p.189-195
Main Authors: Matsuura, H., Miyamoto, H., Ishimaru, J.-I., Kurita, K., Goss, A.N.
Format: Article
Language:English
Subjects:
Analysis of Variance
Animals
Arthroplasty - methods
Biological and medical sciences
Bone Transplantation - methods
Cartilage - transplantation
Chondrogenesis
Dentistry
Head and neck surgery. Maxillofacial surgery. Dental surgery. Orthodontics
Mandibular Condyle - surgery
Maxillofacial surgery. Dental surgery. Orthodontics
Medical sciences
Oral Surgical Procedures - methods
Range of Motion, Articular
Reconstructive Surgical Procedures - methods
Sheep
Statistics, Nonparametric
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Temporomandibular Joint - surgery
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Summary:The purpose of this study was to investigate the effect of costochondral grafts in the temporomandibular joint (TMJ) in sheep. Five pure-bred adult Merino sheep were used. The condyle alone was resected and replaced with a costochondral graft from the 13th rib. The sheep were killed 3 months after operation. The range of jaw movements before and after operation and at death were recorded. The joints were examined radiologically, macroscopically, and histologically. A new condylar head with normal configuration and function developed. Histologically, the chondrocytes were arranged in a fashion similar to that of a normal joint. All inferior joint spaces showed fibrous adhesions between the condylar head and disc. This study showed that, when such grafts are used to replace the condyle in an otherwise normal sheep TMJ, they fused to the ramus and reconstituted a nearly normal, fully functional joint.
ISSN:0266-4356
1532-1940
DOI:10.1054/bjom.2001.0622