意大利整骨Astragalus_bone知识介绍.pptVIP

ASTRAGALUS It consists of 3 parts: - Head (arctic. scaphoid / leg glenoid / int facet anterior calcaneus); - Neck; body (talar pulley). We recognize faces 6: - Superior (body): talar pulley (which is more wide forward); - Lower: has 2 surfaces, anterior facet int (conv) and postero-east (conc), both with off-axis obliquely forward; in the middle, the the tarsal sinus; - External: artic. fibula (lower triangle at the top); - Internal: artic. tibia (comma-shaped); - Rear: shower for muscle FPA, tubercle east. and int. (bone trine); - Front (head): 3 presents the corresponding fields allartic. Scaphoid, the glenoid or leg calcaneal-navicular bottom that acts as a support to the talus. UPPER SIDE or pulley or trochlea: wider forward than the rear, from front to back is convex is concave transversely. During ankle dorsiflexion the clamp opens, closes in plantar flexion, because the trochlea is wider behind than ahead. UNDERSIDE two facet joints that articulate with his heel, a posterior-EXTERNAL globally concave-shaped oval, with an oblique axis forward and out and a ANTERO-INTERNAL globally convex whose main axis is also obliquely forward and outward. FACE OUTSIDE: it is the outer extension of the trochlea, articulates with the fibula, has a shape of an inverted triangle, top to bottom is concave and convex in the anteroposterior direction. At the lower end of the articular facet of the talus we find the apophyses external point of insertion of the leg. talocalcaneal outside. Prior to the neck of the talus are the insertion of the anterior talofibular ligament (anterior talar fibular ligament). INSIDE: Internal extension of the trochlea articulates with the tibia. Articulation comma-shaped mass horizontally. Prior to the neck of the talus have the talar anterior tibial insertion of the ligament, posterior to the medial tubercle of the tibial insertion of the ligament ligament posterior talus. Between the 2 articular surfaces of the lower face, we find the t