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Anatomy Atlases: Illustrated Encyclopedia of Human Anatomic Variation: Opus V: Skeletal Systems: Bipartite Os Zygomaticum. (M. Pisohamatus). (Anamolaous M. Extensor Digitorum Longus Pedis)

Illustrated Encyclopedia of Human Anatomic Variation: Opus V: Skeletal Systems

Bipartite Os Zygomaticum.
(M. Pisohamatus).
(Anamolaous M. Extensor Digitorum Longus Pedis)

Ronald A. Bergman, PhD
Adel K. Afifi, MD, MS
Ryosuke Miyauchi, MD

Peer Review Status: Internally Peer Reviewed


A

a

bipartite zygomatic bone

a'

orbital portion of bipartite zygomatice bone

a''

maxillotemporal portion of bipartite zygomatic bone

a

zygomatic suture

b

zygomaticomaxillary suture

g

zygomaticotemporalis suture

B

a

tendon of flexor carpi ulnaris muscle

b

abductor digiti minimi manus

c

flexor digiti minimi brevis manus

d

opponens digiti minimi manus

e

m. pisohamatus

a

pisiforme bone

b

hamulus of the hamate bone

g

pisohamate ligament

*

triangular hypothenar space

Ý

gap between anamolous muscle and passageway for vessels and nerves.

C

a

m. tibialis anterior

b

m. extensor hallucis longus bicaudatus

c

anomalous m. extensor digitorum longus with 5 tendons, one for each toe

d

m. peroneus tertius

e

m. peroneus longus

f

m. peroneus brevis

a

tail of m. estensor hallucis longus to proximal phalanx of great toe

b

supernumerary tendon of m. extensor digitorum longus to great toe

From Gruber, W. Ein Nachtrag zum Vorkomme des zweigetheilten Jochbeins - Os zygomaticum bipartitum - beim Menschen. Arch. Anat. Physiol.Wissen. Med. 1875, pp. 194-201; Ein Musculus piso-humatus beim Menschen. Ibid. 1875, pp. 202-203; and über den Musculus extensor digitorum communis manus anomalus mit 5 Sehnen zu allen Fingern, and über den Musculus extensor digitorum longus pedis anomalus mit 5 Sehnen zu allen Zehen. Ibid. 1875, pp. 204-210.

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