ART. METACARPOPHALANGEAL Joint

Question 1

ART. Metacarpophalangeal joint

Answer 1

= Fetlock joint

Question 2

In-between MC and Ph1 (lateral view)

Answer 2

1. Trochlea
2. Recessus dorsalis
3. M/L collateral ligament
4. Recessus Palmaris
5. Lig. Palmare

Question 3

Bones involved in METACARPOPHALANGEAL Joint

Answer 3

1. MC (distal end)
2. Distal Phalanges (proc end)
3. Prox sesamoid bones

Question 4

Type of joint

Answer 4

Composite Hinge Joint
Ca: 5 composite and capsule joint
Eq, Bo: 2 composite and capsule joint

Question 5

Function

Answer 5

Flexion and Extention

Question 6

Stabilised by:

Answer 6

1. Suspensory apparatus
   = Interosseus, Prox sessamoid bone, Sessamoid lig.
2. Deep Digital flexor
3. Superficial digital flexor

4* sessamoid ligaments:

1. short
2. cruciate
3. oblique
4. straight

Question 7

Suspensory Apparatus EQ

Answer 7

MCIII + Splintbones

1. M.Interosseus medius
   = Suspensory Lig –> Prox phalanx
   + Tractus oppositus
2. Lig. Sessamoideum = Lig. Palmare + Fibrocartilago
3. Lig. Sessamoideum collaterale
4. Lig. sessamoideum cruciatum
5. Lig. sessamoideum brevis
   - -> Middle Phalanx
6. Lig. Sessamoideum Obliquum
7. Lig. sessamoideum rectus
   - deep
   - Superficial
   - -> Distal Phalanx –> Tuberositas flexoria

Question 8

Suspensory apparatus BO

Answer 8

MCIII and MCIV, Proximal phalanx and prox sb

1. M.Interosseus profundus
   a. Abaxial SB
   b. Axial SB
   c. Tractus oppositus - R. inter digitalis
2. Lig. Interdigitalis proximalis
3. Lig. Inter sessamoideus
4. Lig. Intersessamoideus interdigitale
5. Lig. Phalangosessamoideus interdigitalis
6. Lig. Sessamoideus Cruciate
7. Lig. Collaterale
8. Lig. interdigitale distale

Question 9

Suspensory apparatus CA

Answer 9

MCI-V, Proximal phalanx I-V, Prox. sesamoide bone.

1. Joint capsule
2. Lig. sessamoideum collaterale
3. Lig. Sessamoideum brevis
4. Lig. Sessamoideum cruciatum
5. Lig. sessamoideum Intersessamoideum