Volume 2

General and descriptive anatomy of the domestic animals / by John Gamgee and James Law.

Date:
1861-1862
Catalogue details

Licence: Public Domain Mark

Credit: General and descriptive anatomy of the domestic animals / by John Gamgee and James Law. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    The superior portion is composed of a small muscular belly, originat- ing from the anterior border of the fibula in its superior third, and terminating on a level with the middle of the tibia in a correspondingly small rounded tendon. This passes with the tendon of the peroncus longus over the lower end of the fibula, passes forwards beneath the tendon last named, and, gaining the anterior aspect of the outer digit, becomes attached to the corresponding branch of the common exten- sor tendon. The inferior portion arises from the anterior border and external aspect of the fibula, and ends in a tendon shorter but bulkier than that of the last. This passes over the lower end of the fibula, and over the tendon of the anterior portion, to be inserted on the head of the external metacarpal bone, outside the insertion of the peroneus longus. The former extends the external digit, the latter abducts the foot. Flexor metatarsi, (tibio-premetatarseus, Gir.)—(Fig. 194, No. 13.) —Situated on the extei’nal aspect of the tibia, beneath the extensor pedis, the flexor metatarsi is a large elongated muscle, somewhat flat- tened towards its superior extremity, and composed of an anterior tendinous and a posterior muscular portion. These divisions are quite distinct for some distance from their respective origins and in- sertions, but are intimately attached to each other in their median two-thirds, and at their common insertion. The tendon (peroneus tertius of man), which is long and cylindroid, arises from the fossa between the trochlea and external condyle of the femur, and passes downwards in the notch on the head of the tibia which separates the anterior from the external tuberosity; an extension of the synovial membrane of the femoro-tibial articulation facilitates its gliding through this notch. Beneath this its anterior aspect gives origin to the muscular fibres of the extensor pedis, and still lower its posterior surface receives the insertion of numerous fibres of the muscular portion, and detaches several tendinous bands, which plunge into the substance of the latter. At the lower end of the tibia, it passes beneath an annular ligament with the tendon of the extensor pedis, and in front of the trochlea of the astragulus, divides into two branches. Of these, one strong and flattened is inserted in front of the large metacarpal bone at its superior ex- tremity; the second is subdivided into two portions, which become inserted together on the external aspect of the cuboid, and between which passes the tendon of the extensor pedis. The latter has a synovial bursa, by which it glides over the outer aspect of the cuboid. 2 p Superior head. Inferior head. Situation, form, and structure. Tendon— its origin and course. Its connec- tion with tire extensor pedis and flexor meta- tarsi. Insertions of tile ten- don.