Dr. Sama ul Haque

Muscles of Arm, Cubital fossa,

and Elbow joint

Objectives

Discuss the muscles of anterior and posterior

compartment of arm in terms of their origin, insertion,

nerve supply and actions.

Know the location and boundaries of the Cubital fossa.

Understand the formation of the elbow joint and its type.

Know the movements of flexion and extension at the

elbow joint.

Explain the articulation of the elbow joint with radius and

ulna.

Humerus and Scapula (Anterior view)

Humerus and Scapula (Posterior view)

Muscles of anterior Compartment of Arm

Muscles of anterior Compartment of Arm

Muscles of anterior Compartment of Arm

Neurovasculature of anterior Compartment of Arm

Muscles of posterior Compartment of Arm

Muscles of Posterior Compartment of Arm

Neurovasculature of Posterior Compartment of Arm

Axillary and Brachial arteries

It lies anterior to the elbow: Boundaries: Pronator Teres (Medially) Brachioradialis (Laterally)

Contents: (Lateral to Medial) Biceps tendon & Aponeurosis Brachial artery Median nerve

Cubital Fossa

Cubital Fossa

Cubital Fossa

Roof of cubital fossa • Median Cubital vein• Cephalic vein• Basilic vein

Floor of cubital fossa• Brachialis muscle• Supinator muscle

Cubital Fossa

Cubital Fossa

Cubital Fossa (Site for IV injection)

Course of nerves in anterior and posterior arm

Axillary and Radial Nerves

Radial Nerve

Axillary nerve

Posterior View

Axillary nerve suppliesDeltoid muscleTeres MinorSkin over deltoid

Elbow joint

• Articulation• Type• Capsule• Ligaments•Movements

Elbow joint

Elbow joint

Elbow joint (Lateral & Medial view)

Elbow joint (Lateral & Medial view)

Ligaments of Elbow

Movements at Elbow joint

At Elbow joint At Superior radioulnar joint

Thank you