Ligaments and Joints of the Thoracic Limb

Question 1

• Example of Ball-and-Socket Joint capable of movement in any direction

Flexion and Extension - chief movement

• Considered as most mobile and least stable (common to dislocation) joint in the body
• MEDIAL GLENOHUMERAL LIGAMENT
• TRANSVERSE HUMERAL LIGAMENT

Answer 1

Shoulder Joint

Question 2

• (superior, middle, and inferior)
• stabilization on the head of the humerus to the attachment of the glenoid cavity of the scapula.

Answer 2

Medial Glenohumeral Ligament

Question 3

• Example of a Hinge Joint formed by the condyle/trochlea of the humerus, head of the radius and the trochlear notch of the ulna.
• The HUMERORADIAL part of the elbow joint transmits most of the weight supported by the limb.
• INTEROSSEOUS LIGAMENT
• MEDIAL AND LATERAL COLLATERAL LIGAMENT
• ANNULAR LIGAMENT

Answer 3

Elbow Joint

Question 4

• condensation of collagenous tissue that unites the radius and ulna proximally

Answer 4

Interosseous Ligament

Question 5

• serve secure attachment of the radius and ulna to the humerus.

Answer 5

Medial and Lateral Collateral Ligament

Question 6

• a thin band that runs transversely around the radius.
• it attached to the lateral and medial extremities of the radial incisure of the ulna

Answer 6

Annular Ligament

Question 7

• the ulna sits at the ulnar notch and forms the proximal radioulnar joints which extends dorsally between the articular circumference of the radius to the ulna.
• Ulna has a radial notch.
• The joint allows rotation of the radius on the radial notch of the ulna.

Answer 7

Radioulnar Joints

Question 8

• Composite articulations that include the proximal, distal and intercarpal surfaces

1. ANTEBRACHIOCARPAL JOINT
2. MIDDLE CARPAL JOINTS
3. CARPOMETACARPAL JOINTS

Answer 8

Carpal Joints

Question 9

• located between the distal surface of the radius and ulna and the proximal row of the carpal bones.

Answer 9

Antebrachiocarpal Joint

Question 10

• located between the 2 rows (proximal and distal) carpal bones.

Answer 10

Middle Carpal Joints

Question 11

• located between the distal carpus to the metacarpus.

Answer 11

Carpometacarpal Joints

Question 12

• The forepaw is similar to the hindpaw of which there is a collection of many small bones, and these bones are interconnected to one another by a variety of ligaments.

1. LATERAL COLLATERAL LIGAMENT
2. MEDIAL COLLATERAL LIGAMENT
3. CRUCIATE SESAMOID LIGAMENT
4. COLLATERAL LIGAMENT
5. DORSAL LIGAMENT

Answer 12

Carpal Ligaments

Question 13

• connects the ulna with the carpus

Answer 13

Lateral Collateral Ligament

Question 14

• connects the radius to the carpus

Answer 14

Medial Collateral Ligament

Question 15

• Phalangeal joints, the proximal interphalangeal joints are formed by the head of the proximal phalanges articulating with the fossa of the middle phalanges in each of the main digit.

Answer 15

Phalangeal Joints and Interdigital Ligaments

Question 16

• forms a superficial v shape ligament, not only holds the digits together, but also acts as a fastening mechanism for the large heart shape metacarpal pads.

Answer 16

Dorsal Elastic Ligaments