Volume 1

On the anatomy, physiology, and pathology of the chimpanzee / by Charles F. Sonntag.

  • Sonntag, Charles F. (Charles Frederick), -1925
Date:
1923
Catalogue details

Licence: In copyright

Credit: On the anatomy, physiology, and pathology of the chimpanzee / by Charles F. Sonntag. Source: Wellcome Collection.

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    arises from the entocimeiform, the sheath of the peroneus longus tendon, the capsule of the first metatarso-phalangeal joint, and the lower half of the outer border of the first metatarsal. The outer belly arises from the sheath of the peroneus longus and the external long plantar metatarsal ligament where it is attached to the outer surface of the base of the fourth toe. No fibres arise from the cuboid. The two bellies together with the two adductores hallucis are inserted into the outer side of the base of the first phalanx of the hallux and the capsule of the joint with the interposition of a sesamoid. The internal head is really a first interosseous. The adductor obliquus hallucis arises from the base of the third metatarsal and the proximal half of the external long plantar metatarsal ligament. The adductor transversus hallucis arises from the upper half of that ligament and from the internal long- plantar metatarsal ligament, and the capsules of the second and third metatarso-phalangeal joints. Tho flexor brevis minimi digiti arises from the plantar aspect of the fifth metatarsal bone and the sheath of the tendon of the peroneus longus. It is inserted into the capsule of the fifth metatarso-phalangeal joint and outer side of the base of the proximal phalanx. The opponens minimi digiti arises from the proximal half of the plantar surface of the fifth metatarsal and the sheath of the peroneus longus. It is inserted into the inner side of the capsule of the metatarso-phalangeal joint. There are four dorsal and three plantar interossei, but Dwight (18) mentions a large number. The four dorsal interossei arise as in Man ; but their insertions differ in that they abduct from a line drawn through the middle toe. This resembles the arrangement in the hand, but not in the human foot where the mid line runs through the second toe. Hepburn (24) records the line as resembling that in the human foot, but Champneys (11) and Cunningham (13) point out that in all Primates except the Gorilla and Lemur the interossei abduct the toes from a line through the middle one. The attachments of the dorsal inter- ossei are as follows :— No. 1 inserted into the inner side of the second digit. ^ 55 5 5 5 5 5 5 55 5 5 55 third 3 55 55 55 55 55 55 55 55 55 5 5 55 outer ,, 55 55 55 ; 5 55 55 55 55 fourth 55 55 55 The three plantar interossei adduct towards the middle toe instead of the second as in Man. The first arises in the second interspace from the whole length of the outer side of the second metatarsal, and a few fibres arise from the base of the third metatarsal, as Hepburn (24) finds in the Gorilla. It is inserted into the outer side of the second toe. The second arises from the inner side of the fourth metatarsal and the ligamentous structure covering the bone. It is inserted into the inner side [40]
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