Anconeus

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

• Lateral epicondyle of humerus

Insertion

• Lateral aspect of olecranon
• Proximale 1/4 of posterior ulna

Main function

• Elbow
  • Extension

Nerve innervation

• Segmental
  • C7-C8
• Peripheral
  • Nervus radialis

Arterial blood supply

• Deep brachial artery

• Patient position: Sitting
• Place a finger on the olecranon while you add another finger to the lateral epicondyle
• Then place a finger from the opposite hand halfway between these two fingers and move the finger about 1cm distally
• Give resistance in the direction of flexion of the elbow so that the patient is giving force in the direction of extension of the elbow
• Feel for the contraction of anconeus while the patient is keeping the tension

• Patient position: Supine
• Ask the patient to hold the arm in a 90° flexion of the shoulder-joint
• Give resistance towards the forearm in direction of flexion
• The patient gives force towards extension and maintains the position