A14 - The art. metacarpophalangea and the suspensory apparatus of ruminants

Question 1

What is another name for the art. metacarpophalangea?

Answer 1

Fetlock joint

Question 2

Classification of the fetlock joint

Answer 2

• Diarthrosis
• Hinge joint (monoaxial)
  
  • ​Movement: flexion - extension (and minimal side movement)

Question 3

Between where does the fetlock joint articulate?

Answer 3

Joints between metacarpal bones → proximal phalanges and proximal sesamoid bones

Question 4

List the structures in the fetlock joint

Answer 4

• Capsulae articulares
  
  • Recessus dorsales
  • Recessus palmares
• Ligg. collateralia (mediale/laterale)
• Ligg. palmaria
  
  • Scutum proximale
• Ligg. sesamoidea collateralia
• Lig. metacarpointersesamoideum (eq)
• Lig. intersesamoideum interdigitale (bo)
• Lig. sesamoideum rectum (eq)
• Ligg. sesamoidea obliqua (eq)
• Ligg. sesamoidea brevia (Un)
• Ligg. sesamoidea cruciata
• Lig. phalangosesamoideum interdigitale (bo)
• Lig. metacarpeum transversum profundum (ca, su)
• Lig. interdigitale proximale (bo, su)

Se definisjoner i egene notater

Question 5

Ruminant

Draw the fetlock joint

Answer 5

Ligaments special for ruminants:

• Lig. intersesamoideum interdigitale (bo)
  
  • Between the axial sesamoid bone
• Lig. phalangosesamoideum interdigitale (bo)
  
  • Between Ph1 of one digit and the axial sesamoid bone of the other
• ​Lig. interdigitale proximale (bo, su)
  
  • Ph1 of digit III → Ph1 of digit IV

Question 6

Manica flexoria

Answer 6

Proximal to the fetlock joint, the superficial flexor tendon forms within the synovial sheath a ring-like sleeve around the deep flexor tendon