Studying anatomy & physiology grouped by regions of the body.
WORK IN PROGRESS…LAST UPDATE 01.20.2020
Bony Landmarks of the Humerus
| Head of humerus | Lateral supracondylar ridge |
| Greater tubercle | Lateral epicondyle |
| Lesser tubercle | Medial epicondyle |
| Anatomical neck | Radial fossa |
| Surgical neck | Capitulum |
| Intertubercular groove or sulcus | Trochlea |
| Deltoid tuberosity | Coronoid fossa |
| Shaft | Olecranon fossa |
Bony Landmarks of the Radius
| Head of radius (articular disc) | Interosseous border |
| Neck of radius | Radial tuberosity |
| Anterior surface | Posterior border |
| Anterior border | Posterior surface |
| Styloid process | Lateral surface |
| Suprastyloid crest | Ulnar notch |
| Articular surface for carpals | Dorsal tubercle |
Bony Landmarks of the Ulnar
| Olecranon process | Styloid process of ulnar |
| Coronoid process | Radial notch |
| Interosseous border | Trochlear notch |
| Head of ulna |
Anterior Arm Compartment
| Biceps brachii long head | tubercle above glenoid cavity on scapula (supraglenoid tubercle) | radial tuberosity of radius, and bicipital aponeurosis | elbow flexion, supination of radioulnar joint, shoulder flexion. |
| Biceps brachii short head | corocoid process | radial tuberosity of radius, and bicipital aponeurosis | elbow flexion, supination of radioulnar joint, shoulder flexion. |
| Brachialis | distal, anterior surface of humerus. | ulnar tuberosity and coronoid process of ulna. | elbow flexion. |
| Corocobrachialis | coracoid process of scapula. | middle of medial surface of shaft of humerus. | shoulder flexion and adduction. Horizontal arm flexion. |
Innervated by the musculocutaneous nerve (ventral rami C5-7).
Posterior Arm Compartment
| Triceps brachii long head | infraglenoid tubercle of scapula, a projection inferior to glenoid cavity. | olecranon process of ulna. | elbow extension; shoulder extension. Adduction of shoulder (long head); shoulder extension (glenohumeral joint). |
| Triceps brachii lateral head | lateral and posterior surfaces of humerus superior to radial groove. | olecranon process of ulna. | elbow extension; shoulder extension. Adduction of shoulder (long head); shoulder extension (glenohumeral joint). |
| Triceps brachii medial head | posterior surface of humerus inferior to groove for radial nerve. | olecranon process of ulna. | elbow extension; shoulder extension. Adduction of shoulder (long head); shoulder extension (glenohumeral joint). |
| Anconeus | lateral epicondyle of humerus. | olecranon and superior portion of ulnar shaft. | elbow extension. |
Innervated by the radial nerve C5-1.
Joints
- Humeroulnar joint
Ligaments/Tendons
- Annular
- Transverse humeral
- Radial collateral
- Ulnar collateral
Vascular Supply
Innervation
- Musculocutaneous nerve (ventral rami C5-7).
- Radial nerve C5-1.
Clinical/Pathology
- Thoracic Outlet Syndrome
Other Features
- Quadrangular space
- Triangular interval
- Triceps hiatus
- Triangular space
- Bicepital aponeurosis
- Subcutaneous olecranon bursa
- Subtendinous bursa of triceps
- Cubital fossa
Detailed Studies
Notes
References
Biel, A. (2015). Trail guide to the body: A hands-on guide to locating muscles, bones and more.
Cedars-Sinai. (2018). Vertebrae of the spine. Retrieved from https://www.cedars-sinai.org/health-library/diseases-and-conditions/v/vertebrae-of-the-spine.html
Cedars-Sinai. (2018). Vertebrae of the spine. Retrieved from https://www.cedars-sinai.org/health-library/diseases-and-conditions/v/vertebrae-of-the-spine.html
Muscolino, J. E. (2017). The muscular system manual: The skeletal muscles of the human body.
