| Title | Brachial Artery and Anastomoses |
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| Clinical | Clinical: As with the shoulder joint, the elbow joint also possesses a rich vascular anastomosis, providing blood to the muscles acting on the elbow joint and supplying the joint itself. |
| Comment | Comment: The brachial artery is a continuation of the axillary artery; it begins at the lower margin of the teres major muscle. The brachial artery provides a deep branch to the muscles of the posterior compartment of the arm. In the cubital fossa, the brachial artery divides into the radial and ulnar arteries. The elbow joint is surrounded by a rich anastomosis of radial and ulnar recurrent and collateral arteries. The radial nerve courses with the deep branch of the brachial artery in the arm. The ulnar nerve courses with the superior ulnar collateral artery. The median nerve courses with the brachial artery. |
| Origin | |
| Insertion | |
| Attachments | |
| Innervation | |
| Actions | |
| Plate | Atlas Plate 422;See also Plate 415 |
| 1a | Thoracoacromial artery;Arteria thoracoacromialis |
| 2a | Axillary artery;Arteria axillaris |
| 3a | Posterior humeral circumflex artery;Arteria circumflexa humeri posterior |
| 4a | Brachial artery;Arteria brachialis |
| 5a | Deep artery of arm;Arteria brachialis profunda |
| 6a | Radial collateral artery;Arteria collateralis radialis |
| 7a | Radial recurrent artery;Arteria collateralis recurrentis |
| 8a | Radial artery;Arteria radialis |
| 9a | Ulnar artery;Arteria ulnaris |
| 10a | Common interosseous artery;Arteria communis interosseous |
| 11a | Superior ulnar collateral artery;Arteria collateralis ulnaris superior |
| 12a | Circumflex scapular artery;Arteria circumflexa scapulae |
| 13a | Subscapular artery;Arteria subscapularis |
| 14a | |
| 15a | |
| 16a | |
| 17a | |
| 18a | |
| 19a | |
| 20a | |
| Title | Tibia and Fibula |
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| Clinical | Clinical: Fractures of the tibial shaft are the most common fractures of a long bone. Because the tibia lies just beneath the skin along the medial border of the leg, these fractures often are open injuries (skin perforated). |
| Comment | Comment: The tibia articulates with the condyles of the femur and is the weight-bearing bone of the leg. The smaller fibula lies posterolateral to the tibia. It exists largely for muscle attachment. The tibial tuberosity is the insertion site for the patellar ligament (tendon of attachment for the quadriceps muscles of the anterior thigh that extend the leg at the knee joint). Fractures of the tibial shaft are the most common fractures of a long bone. Because the tibia lies just beneath the skin along the medial border of the leg, these fractures often are open injuries (skin perforated). The proximal tibiofibular joint is a plane synovial joint that permits limited gliding movement. The distal tibiofibular joint is a fibrous joint (syndesmosis), which allows almost no movement. |
| Origin | |
| Insertion | |
| Attachments | |
| Innervation | |
| Actions | |
| Plate | Atlas Plate 501 |
| 1a | Lateral condyle;Condylus lateralis tibiae |
| 2a | Apex, Head, and Neck of fibula;Apex et caput et cervix fibulae |
| 3a | Fibula;Fibula |
| 4a | Lateral malleolus;Malleolus lateralis |
| 5a | Medial malleolus;Malleolus medialis |
| 6a | Tibia;Tibia |
| 7a | Tibial tuberosity;Tuberositas tibiae |
| 8a | Medial condyle;Condylus medialis tibiae |
| 9a | Superior articular surfaces (medial and lateral facets);Articularae superior superficiae tibiae |
| 10a | Malleolar fossa of lateral malleolus;Fossae malleolus lateralis |
| 11a | |
| 12a | |
| 13a | |
| 14a | |
| 15a | |
| 16a | |
| 17a | |
| 18a | |
| 19a | |
| 20a | |
