Contents
Anatomy
General information
- This section is strictly limited to anatomy, you might be looking for clinical relevant information which is found under the clinical chapters -- muscles section, click here to go to that page
Position
- Superficial
Origin
- Long head
- Tuberculum infraglenoidale scapula
- Lateral head
- Posterior aspect of humerus - proximal 1/2
- Medial head
- Posterior aspect of humerus - distal 1/2
Insertion
- Olecranon ulna
- Fascia antebrachii
Main function
- Elbow
- Extension
Secondary function
- Shoulder
- Adduction
- Extension
Nerve innervation
- Segmental
- C6-C8
- Peripheral
- Radial nerve
Arterial supply
- Brachial artery
- Circumflex scapular artery
Palpation
- Patient position
- Sidelying or seated
- Place your hand just proximal to olecranon
- Give resistance towards flexion of the elbow so that the patient is giving force towards extension
- Have the patient maintain the resistance while you palpate the triceps in a proximal direction towards the origin at tuberculum infraglenoidale at scapula
Strength test triceps and anconeus
- Patient position
- Supine
- Ask the patient to hold the arm in 90° flexion of the shoulder
- Give resistance towards the patient's lower arm in a flexion direction
- The patient give resistance towards extension and maintains the position