Functional morphology of forelimb joints in the woolly monkey Lagothrix lagothricha.
Functional morphology of forelimb joints in the woolly monkey Lagothrix lagothricha.
复制标题
毛猴 Lagothrix lagothricha 前肢关节的功能形态。
DOI：
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发表时间：
1978
期刊：
影响因子：
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通讯作者：
L. Ziemer
中科院分区：
文献类型：
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作者：
L. Ziemer
对南美毛猴Lagothrix lagothricha的防腐前肢关节的大体解剖学研究集中在确定骨韧带准备中囊状器的布置和关节面的几何形状如何支配关节处允许的运动的量和类型的问题上，然后将这些发现与作者观察到的圈养毛猴前肢位置能力的使用相关联。数据收集是通过解剖，定量的运动范围的研究骨韧带准备，并通过定性操作这些准备和离断骨。从X线片和关节面角度值的估计中获得了补充证据。提出的肩，肘，桡尺骨，和手关节复合体的囊状器和关节面的功能解剖，运动数据的定量范围，并提出的运动机制，结合联合收割机的功能形态与观察到的使用前肢的活动，由动物。MacConaill的结构功能框架是联合分析的基础。有证据表明，这些关节的功能解剖与兔兔可能的位置能力相关。囊器和关节面的形态反映了树栖四足动物和前肢悬挂的毛猴。最大一致性和紧密包的位置近似前肢的负重姿势在掌行树栖四足动物。在前肢悬吊期间，紧密堆积的关节的绷紧和扭曲的囊状装置保持前肢连接的完整性处于张力状态。这是第一个已知的第二至第五手指的近端指间关节的侧副韧带的内部带被纳入伸肌组件的末端肌腱的报告。作者认为，这不仅是一种机制，以维持这些关节的完整性，前肢悬吊活动时，身体是由中间的指骨，但也有助于协调的弯曲和伸展的动作，顺利掌握和释放演习在树的环境。当收集到足够的比较数据时，关节的功能形态与位置行为的这种相关性可以用来假设化石灵长类动物的位置能力。
This gross anatomical study of embalmed forelimb joints of the South American woolly monkey Lagothrix lagothricha focuses on the problem of determining in osteoligamentous preparations how the disposition of the capsular apparatus and the geometry of the articular surfaces govern the amount and types of movement permitted at a joint, and then correlates these findings with the use of the forelimb in the positional capabilities of captive wooly monkeys observed by this author. Data collection was by dissection, quantitative range of motion studies on osteoligamentous preparations, and by qualitative manipulations of these preparations and of disarticulated bones. Supplemental evidence was obtained from radiographs and from an estimate of angular values of articular surfaces. Presented for the shoulder, elbow, radioulnar, and hand joint complexes are the functional anatomy of the capsular apparatus and articular surfaces, the quantitative range of motion data, and proposed mechanisms of movement that combine the functional morphology with the observed use of the forelimb in activities by the animal. The structurofunctional framework of MacConaill is the basis for the joint analysis. The evidence suggests that the functional anatomy of these joints correlates well with the possible positional capabilities of Lagothrix. The morphology of the capsular apparatus and joint surfaces reflect both the arboreal quadrupedalism and forelimb suspension of the woolly monkey. The positions of maximum congruency and close-pack approximate the forelimb's weight-bearing stance during palmigrade arboreal quadrupedalism. During forelimb suspension, the taut and twisted capsular apparatus of close-packed joints maintains the integrity of forelimb links in tension. This is the first known report of the internal band of the collateral ligament of the proximal interphalangeal joints of the second through fifth digits being incorporated into the terminal tendon of the extensor assembly. This author believes this is a mechanism not only for maintaining the integrity of these joints during forelimb suspensory activities when the body is supported by the middle phalanges, but also for helping to coordinate the flexion-extension actions of the phalanges for smooth grasping and release maneuvers in an arboreal environment. When sufficient comparative data have been collected, such correlations of the functional morphology of joints with positional behavior may be used to postulate positional capabilities of fossil primates.