TY - JOUR
T1 - Kinematic Assessment of the Temporomandibular Joint Before and After Partial Metal Fossa Eminence Replacement Surgery
T2 - A Prospective Study
AU - Baltali, Evre
AU - Zhao, Kristin D.
AU - Koff, Matthew F.
AU - Durmuş, Ercan
AU - An, Kai Nan
AU - Keller, Eugene E.
PY - 2008/7
Y1 - 2008/7
N2 - Purpose: This study compared the functional kinematic outcome of the temporomandibular joint (TMJ) in patients with end-stage TMJ osteoarthritis before and after TMJ hemijoint replacement surgery. Materials and Methods: Fourteen patients (15 joints), with a mean age of 46.1 years, undergoing metal fossa eminence hemijoint replacement surgery, participated in this study. Each patient's jaw motion was recorded using an electromagnetic tracking device and patient-specific computed tomography images. A visual analog scale patient response questionnaire was used before and after the operation to assess the subjective outcome of the surgery. Results: The mean linear distance (LD) traveled by the incisors increased significantly due to the surgical intervention, from 30.4 ± 6.9 mm preoperatively to 35.5 ± 5.3 mm postoperatively (P = .02). The LD of the operated condyle decreased from 14.1 ± 5.7 mm to 11.4 ± 6.2 mm, but this was not significant. The mean LD for the unoperated condyle remained similar (preoperative, 13.2 ± 5.9 mm; postoperative, 13.3 ± 6.5 mm). The total mandibular rotation increased significantly, from 19.3 ± 4.9 degrees preoperatively to 24.8 ± 3.9 postoperatively (P < .01). Conclusions: Kinematic data support the functional efficiency of hemijoint replacement surgery, with benefits of increased maximal mouth opening, preservation of operated and unoperated condyle translation motion, and increased mandibular rotation.
AB - Purpose: This study compared the functional kinematic outcome of the temporomandibular joint (TMJ) in patients with end-stage TMJ osteoarthritis before and after TMJ hemijoint replacement surgery. Materials and Methods: Fourteen patients (15 joints), with a mean age of 46.1 years, undergoing metal fossa eminence hemijoint replacement surgery, participated in this study. Each patient's jaw motion was recorded using an electromagnetic tracking device and patient-specific computed tomography images. A visual analog scale patient response questionnaire was used before and after the operation to assess the subjective outcome of the surgery. Results: The mean linear distance (LD) traveled by the incisors increased significantly due to the surgical intervention, from 30.4 ± 6.9 mm preoperatively to 35.5 ± 5.3 mm postoperatively (P = .02). The LD of the operated condyle decreased from 14.1 ± 5.7 mm to 11.4 ± 6.2 mm, but this was not significant. The mean LD for the unoperated condyle remained similar (preoperative, 13.2 ± 5.9 mm; postoperative, 13.3 ± 6.5 mm). The total mandibular rotation increased significantly, from 19.3 ± 4.9 degrees preoperatively to 24.8 ± 3.9 postoperatively (P < .01). Conclusions: Kinematic data support the functional efficiency of hemijoint replacement surgery, with benefits of increased maximal mouth opening, preservation of operated and unoperated condyle translation motion, and increased mandibular rotation.
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U2 - 10.1016/j.joms.2007.09.014
DO - 10.1016/j.joms.2007.09.014
M3 - Article
C2 - 18571021
AN - SCOPUS:45149128706
SN - 0278-2391
VL - 66
SP - 1383
EP - 1389
JO - Journal of Oral and Maxillofacial Surgery
JF - Journal of Oral and Maxillofacial Surgery
IS - 7
ER -