trochlea


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trochlea

[′träk·lē·ə]
(anatomy)
A pulleylike anatomical structure.
References in periodicals archive ?
With her worn-down trochlea and recurrent dislocations, Koh's patient clearly was an ideal candidate for MPFL reconstruction.
One unusual feature, recorded in right humerus #70, consisted of a round pit measuring 11 mm in diameter located directly superior to the trochlea (Fig.
76) In a further development during their categorization of anterior inferior tibiofibular ligament configurations, they reported finding a triangular beveled area of the anterolateral edge of the talar trochlea that was associated with impingement, a feature of the trochlea alluded to by Bartonfcek, as well.
3) Secondary ossification centers of the elbow appear first at the capitellum (age 2), followed by the radial head (age 5), medial epicondyle (age 7), trochlea (age 9), and lateral epicondyle (age 11).
An 8 mm diameter full-thickness chondral defect was created arthroscopically on the medial femoral trochlea of the right stifle of the mares of both groups, with the help of a harvester and a periosteal elevator.
The trochlea forms the SO functional origin, and the IO shares its muscle pulley with the IR.
Below the middle talar facet is the sustentaculum tali which serves as attachment of several other ligaments and laterally the peroneus longus tendon attaches to a tubercle called the peroneal trochlea.
the proximal end between the carpal trochlea is flat, not notched as in Oxyura,
This specimen is referred to Ictinia, rather than to other genera of small New World accipitrids (Chondrohierax, Elanoides, Gampsonyx, Elanus, Harpagus and Accipiter) by having this unique combination of characters: Foramen vasculare distale wide and long relative to width of Corpus tarsometatarsi (small in Chondrohierax) ; Trochlea metatarsi II extends distad to level of Trochlea metatarsi III (does not extend this far in Elanoides, Elanus, Harpagus or Accipiter) ; Trochlea metatarsi III as wide as long in acrotarsial aspect (narrower in Gampsonyx and Accipiter); Trochlea metatarsi II wide (narrower in Elanus, Harpagus and Accipiter); in medial aspect, plantar extension of Trochlea metatarsi II moderate (greater in Gampsonyx, Elanus, Harpagus and Accipiter.
2,5) Large valgus loads with rapid elbow extension produce tensile stresses on medial compartment restraints (ulnar collateral ligament, flexor-pronator mass and ulnar nerve) and shear stress in the posterior compartment (posteromedial tip of the olecranon, trochlea, olecranon fossa) and compression stresses laterally (radial head, capitellum).
Proximal to the trochlea are two fossae: the coronoid fossa on the anterior surface, which receives the coronoid process of the ulna, when the forearm is flexed.