Spaces Flashcards
Quadrangular Space
Boundaries:
Lateral - lateral head of the triceps brachii muscle
Medial - long head of the triceps brachii muscle
Superior - teres minor
Inferior - teres major
Contents:
Axillary Nerve
Posterior Circumflex Humeral Artery
Triangular Space
Boundaries:
Superior - Teres Minor Muscle
Inferior - Teres Major Muscle
Lateral - Long Head of Triceps Brachii
Contents:
Circumflex scapular artery
Deltopectoral Triangle
Boundaries:
Superior - Clavicle
Medial - Pectoralis Major
Lateral - Deltoid
Contents:
Cephalic Vein
Deltoid Branch of Thoracoacromial Trunk Artery
Axilla
Definition: Pyrimidal Space inferior to the glenohumeral joint and superior to the axillary fascia at the junction of the arm and the thorax
Boundaries: Apex - Medially - First Rib Anteriorly - Clavicle Posteriorly - Superior Border of the Scapula/ Subscapularis Base - Skin (most superficially) Subcutaneous Tissue Axillary Fascia (deepest) Anterior Wall - Pectoralis Major Pectoralis Minor Posterior Wall - Teres Major Latissimus Dorsi - inferiorly Subscapularis - superiorly Medial Wall - Thoracic Wall Serratus Anterior Lateral Wall - Intertubercular groove of the humerus
Contents: Lymphatic Vessels and Lymph Nodes Axillary Artery and its branches Axillary Vein Brachial Plexus
Triangular Interval
Boundaries:
Lateral - lateral head of triceps brachii muscle
Medial - long head of the triceps brachii muscle
Superior - Teres Major
Contents:
Radial Nerve
Profunda Brachii Artery
Cubital Fossa
Boundaries: Lateral - brachioradials muscle Medial - Pronator Teres Muscle Superior - Line between the medial and lateral epicondyles of the humerus Roof - Superficial Fascia, Subcutaneous Tissue, Bicipital Aponeurosis, and Skin Floor - Brachialis, Supinator
Contents: Veins: Median Cubital Vein Cephalic Vein (lateral) Basilic Vein (medial) Arteries: Brachial Artery Nerves: Medial Nerve Biceps Brachii Muscle Tendon and Bicipital Aponeurosis (goes anterior to the median nerve and brachial artery)
Medial Cubital Tunnel
Aperture found posterior to the medial epicondyle of the humerus for passage of the ulnar nerve
“Funny Bone”
Flexor Retinaculum - Structures that pass superficial
Palmaris Longus Tendon, Ulnar Nerve, Ulnar Artery, Flexor Carpi Ulnaris Tendon
Flexor Retinaculum - Structures that pass deep
Carpal Tunnel: 4 tendons of FDS, 4 tendons of FDP, Median Nerve, Tendon of Flexor Pollicis Longus
Compartment for Tendon of Flexor Carpi Radialis: Tendon of Flexor Carpi Radialis
Contents of Compartments Deep to the Extensor Retinaculum
1st Compartment: Tendon of Abductor Pollicis Longus, Tendon of Extensor Pollicis Brevis
2nd Compartment: Extensor Carpi Radialis Longus
3rd Compartment: Extensor Pollicis Longus
4th Compartment: 4 tendons of extensor digitorum and underlying tendon of extensor indicis
5th compartment: Tendon of extensor digiti minimi
6th compartment: Tendon of extensor carpi ulnaris
Anatomic Snuffbox
Boundaries:
Lateral - Tendon of abductor pollicis longus and tendon of extensor pollicis brevis
Medial - Tendon of Extensor Pollicis Longus
Contents:
Superficial: Superficial Branch of the Radial Nerve, Lateral Antebrachial Cutaneous Nerve, Cephalic Vein
Deep: Radial Artery
Guyon’s Canal
Between the pisiform and the hook of the hamate; superficial to the flexor retinaculum; ulnar nerve and artery run through here