12

Question 1

describe the proximal interphalangeal joint

Answer 1

aka pastern joint

• hinge joint
• ligaments restrict movement mainly to Ext/Flex - but some lat movement is possible
• dorsal/palmar recess

Question 2

describe the distal interphalangeal joint

Answer 2

aka coffin joint

• composite joint (ses. dist)
• mainly to Ext/Flex - but some lat movement is possible for uneven ground
• dorsal/palmar recess

Question 3

name the 3 ligs of the pastern joint

Answer 3

1 - lig collat lat et med (obliquely)
2 - 2lig palmare axiale (close to midline then spread out dist/lat
3 - 2lig palmare abaxiale(same as axial but longer and shifted from midline)

Question 4

scutum medium of the pastern joint

Answer 4

smooth surf for passage of DDF made by:

• axial ligs
• lig sesam rectum (prof/supf)
• palmar flexor surface of ph2

Question 5

name the ligaments related to ph2-3 only

Answer 5

lig collat lat et med

Question 6

name the two ligaments of the navicular bone

Answer 6

=dist SB
1 - lig ses dist impar (fan out from dist margin of the BS ->scutum distale for DDF)
2 - lig ses collat lat et med (prox surface of SB)

Question 7

name the 6 ligaments of the cartilago ungularis(M/L)

Answer 7

1 - ligchondrocompedalia lat et med (prox surf)
2 - chondrocoronale lat et med (prox surf)
3 - chondroungularia collat lat et med (dist border)
4 - lig chondrosesam lat et med (to axial surf palm)
5 - lig chondroungularia cruciata(axial surf, covered by DDF)
6 - lig chondropulvinale(axial surface to torus)

Question 8

retinaculum flexorium

Answer 8

• strong transverse fibers: retention mechanism
• reinforced by digital fascia
• fuse with prox SB’s. palmar ligs, collateral SB ligs and some places withflexor tendons
• bursa podotrochlearis (palmar ph3)

corresponding extensor retinaculum

Question 9

retinaculum flexorium consist of

Answer 9

lig anulare palm (around flex tendons)
fetlock plate (cart attached to ph1, unite its flex tendons)
ligg. annularia diigiti: sheet forming "sock" around tendons

Question 10

FL digital ext

Answer 10

m. ext dig comm
m. ext dig longus
m. ext abductor pollicis longus

(planum cutaneum - medial surf)

Question 11

FL digital flex: long

Answer 11

SDF
DDF
mm. interflexorii

Question 12

FL digital flex: 2 common short mm

Answer 12

on mc bones; act “several” digits together

1. m. interossei mt-prox SB
2. mm. lumbricales - not very distinct btw SDF and DDF

dont have special short mm -> only digit 3!