What articulates with the trochlea of the humerus?
Trochlear notch of the ulna.
p.3
Nerve Supply of the Anterior Forearm
What anatomical structures control the movements of pronation and supination?
The ligaments of the elbow joint, the wrist joint, and the interosseous membrane.
p.7
Cubital Tunnel and Ulnar Nerve Pathway
What are the borders of the cubital tunnel?
Lateral: olecranon process of ulna; Medial: medial epicondyle of humerus; Floor: joint capsule of the elbow.
What is the primary attachment for the interosseous membrane on the radius?
Interosseous border (medial).
p.8
Clinical Considerations: Medial Epicondylitis
What is another name for medial epicondylitis?
Golfer’s elbow or Baseball elbow.
p.7
Clinical Considerations: Pronator Syndrome
What can provoke pain in pronator syndrome?
Having the patient pronate the arm against resistance.
p.4
Arterial Supply of the Anterior Forearm
What does the common interosseous artery branch into?
Anterior interosseous artery, posterior interosseous artery, and interosseous recurrent artery.
p.3
Muscles of the Anterior Forearm
What is the third layer of the anterior forearm composed of?
Three muscles: Flexor digitorum profundus, Flexor pollicis longus, and Pronator quadratus.
p.8
Clinical Considerations: Medial Epicondylitis
What are common signs and symptoms of medial epicondylitis?
Pain and inflammation at the medial epicondyle, and pain radiating down the medial forearm to the wrist and little finger due to ulnar nerve irritation.
p.8
Cubital Tunnel and Ulnar Nerve Pathway
What can cause cubital tunnel syndrome?
Constant leaning on a hard surface with bent elbows, or injuries to the medial epicondyle or olecranon process.
p.2
Muscles of the Anterior Forearm
What do the four fingers of your hand map out when placed on the medial epicondyle?
The pattern of the superficial layer of muscles.
p.4
Arterial Supply of the Anterior Forearm
What are the branches given off by the ulnar artery in the forearm?
Anterior ulnar recurrent artery, posterior ulnar recurrent artery, and common interosseous artery.
p.4
Arterial Supply of the Anterior Forearm
Where does the radial artery travel in relation to the brachioradialis muscle?
Just deep to the brachioradialis muscle.
p.7
Clinical Considerations: Pronator Syndrome
What are some signs/symptoms of pronator syndrome?
Pain and tenderness in the proximal anterior forearm; decreased sensation in the medial three and a half digits of the hand.
p.9
Cubital Tunnel and Ulnar Nerve Pathway
What can cause pain in the hand related to ulnar nerve injury?
Nerve compression or damage at the elbow.
p.4
Arterial Supply of the Anterior Forearm
What significant anatomical feature does the radial artery cross at the wrist?
The anatomical snuff box.
p.9
Nerve Supply of the Anterior Forearm
What specific muscle movements can be impaired by ulnar nerve injury?
Ulnar deviation of the wrist (flexor carpi ulnaris) and flexion of the medial two distal interphalangeal joints (flexor digitorum profundus).
p.7
Cubital Tunnel and Ulnar Nerve Pathway
What is the roof of the cubital tunnel?
Cubital tunnel retinaculum.
p.9
Clinical Considerations: Medial Epicondylitis
What are the signs and symptoms of ulnar nerve injury near the elbow?
Numbness and tingling in the medial part of the palm and one and a half fingers, aching pain at the elbow, and pain in the hand.
p.6
Nerve Supply of the Anterior Forearm
What muscles does the ulnar nerve supply?
Flexor carpi ulnaris and the medial half of flexor digitorum profundus.
p.3
Muscles of the Anterior Forearm
Which muscle is responsible for the flexion of the fingers?
Flexor digitorum profundus.
p.9
Cubital Tunnel and Ulnar Nerve Pathway
How can you distinguish between medial epicondyle injury and cubital tunnel syndrome?
By imaging and the type of injury; medial epicondyle injury is a direct injury, while cubital tunnel syndrome can occur from various mechanisms.
p.6
Nerve Supply of the Anterior Forearm
What does the median nerve supply in the anterior forearm?
Most of the anterior forearm muscles, except those supplied by the ulnar nerve.
p.3
Clinical Considerations: Pronator Syndrome
What movements are described by pronation and supination?
The movement of the radius over the ulna.
p.8
Cubital Tunnel and Ulnar Nerve Pathway
Where is the ulnar nerve most susceptible to trauma?
Posterior to the medial epicondyle of the humerus.
p.9
Clinical Considerations: Medial Epicondylitis
What type of pain is commonly associated with ulnar nerve injury?
Aching pain at the elbow, especially when bent.
p.5
Venous Supply of the Anterior Forearm
What do deep veins in the anterior forearm accompany?
They accompany and are named the same as the major arteries.
p.8
Clinical Considerations: Medial Epicondylitis
What causes medial epicondylitis?
Repetitive use of forearm flexors that attach at the medial epicondyle.
p.1
Muscles of the Anterior Forearm
Which muscle is the only one in the intermediate layer of the anterior forearm?
Flexor digitorum superficialis.
