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Triceps and anconeus

Contents

Anatomy pictures

Triceps brachii - posterior view
Triceps brachii - anterior view

Anconeus - posterior view
Anconeus - posterolateral view

Referred pain pattern

Triceps brachii - pain pattern posterior aspect
Triceps brachii - pain pattern palmar aspect

Muscle type

  • Phasic
    • Weakens when overactivated

Symptoms

  • Epicondylitis
  • Olecranon bursitis

Muscle attachment zones

Videos

Short version

Detailed version

Synergists

Extension elbow

  • Anconeus
  • Extensor Digitorum
  • Extensor Digiti Minimi
  • Extensor Carpi Ulnaris

Antagonists

Flexion elbow

  • Brachialis
  • Biceps Brachii
  • Brachioradialis
  • Pronator Teres
  • Flexor Carpi Radialis
  • Palmaris Longus
  • Flexor Carpi Ulnaris
  • Flexor Digitorum Superficialis
  • Flexor Pollicis Longus
  • Extensor Carpi Radialis Longus
  • Extensor Carpi Radialis Brevis

ANATOMY

Position

  • Superficial

Origin

  • Long head
    • Tuberculum infraglenoidale scapulae
  • Lateral head
    • Posterior aspect of humerus, proximal 1/2
  • Medial head
    • Posterior aspect of humerusdistal 1/2

Insertion

  • Olecranon ulna
  • Fascia antebrachii

Main function

  • Elbow
    • Extension

Secondary function

  • Shoulder
    • Adduction
  • Shoulder
    • Extension

Nerve innervation

  • Segmental
    • C6-C8
  • Peripheral
    • Nervus radialis

Arterial supply

  • Brachial artery
  • Circumflex scapular artery