Morphologic changes in the unloaded temporomandibular joint after mandibulectomy.
Morphologic changes in the unloaded temporomandibular joint after mandibulectomy.
复制标题
下颌骨切除术后卸载的颞下颌关节的形态变化。
DOI：
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发表时间：
2003
影响因子：
1.9
通讯作者：
K. Seto
中科院分区：
文献类型：
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作者：
Y. Hamada;T. Kondoh;H. Sekiya;K. Seto
目的
本研究的目的是观察下颌骨切除(包括髁状突或节段性下颌骨切除)后卸载的颞下颌关节(TMJ)的关节内情况。
患者和方法
17个关节被定义为未加载的TMJ。17个关节中有11个关节分为“无髁突”组(WOC组)，除保留关节盘和上关节间隙外，其余6个关节均为“有髁组”(WC组)，关节突与TMJ相连。通过核磁共振成像检查椎间盘形态、骨质改变和关节积液。在17个关节中，8个关节进行了关节镜下上关节间隙的检查。评估WOC组和WC组数据之间的相关性。并分析了关节镜检查结果与关节积液的关系。
结果
WOC组11个关节中有7个关节(63.6%)有关节盘变形，而WC组未见关节盘变形，关节盘与髁突关系正常。所有关节均未检测到骨质改变。两组的几乎所有关节都观察到关节积液和关节镜诊断的纤维粘连。
结论
我们得出的结论是，盘与髁突之间关系的改变对盘变形的启动比盘上的载荷条件更重要。本研究结果提示，关节退行性变是由滑液代谢紊乱引起的，而骨质状况不受影响。
PURPOSE
The aim of this study was to examine intra-articular conditions in unloaded temporomandibular joints (TMJs) after mandibulectomy including the condyle or segmental mandibulectomy.
PATIENTS AND METHODS
Seventeen joints were defined as unloaded TMJs. Eleven of the 17 joints were classified into the "without condyle" (WOC) group in which TMJs had the condyle removed but the disc and superior joint compartment were preserved, and remaining 6 joints were classified into the "with condyle" (WC) group in which TMJs were connected to the condylar process. Disc configuration, bony changes, and joint effusion were examined by magnetic resonance imaging. In 8 of the 17 joints, arthroscopic examination of the superior joint compartment was performed. Correlation between data of the WOC and WC groups was evaluated. The relationship between arthroscopic findings and joint effusion was also analyzed.
RESULTS
Deformed discs were observed in 7 of the 11 joints (63.6%) of the WOC group but were not observed in the WC group, in which there was a normal relationship between the disc and condyle. Bony changes were not detected in any joints. Joint effusion and arthroscopically diagnosed fibrous adhesion were observed in nearly all joints of both groups.
CONCLUSIONS
We conclude that alteration of the relationship between the disc and condyle is more important for the initiation of disc deformation than loading conditions on the disc. The present findings suggest that, in the unloaded TMJs, articular degeneration is induced by disturbance of synovial fluid metabolism but that bony conditions are not affected.
影响因子：
2.3
作者：
Ellis3rd,E;Carlson,DS
通讯作者：
Carlson,DS