Related Experiment Video
Updated: Dec 12, 2025
10:36
Vascularized Composite Hand Allograft Procurement and Preparation for Distal and Proximal Forearm Allotransplantation: A Stepwise Approach
Published on: May 23, 2025
627
Tortuous ulnar artery presenting as left distal forearm mass
Ganesh Ramakrishnan1, Rodrigue F Fontem2, Sharvil U Sheth3
1Lewis Katz School of Medicine at Temple University, Philadelphia, Pa.
Journal of Vascular Surgery Cases and Innovative Techniques
|August 11, 2020
Summary
Tortuosity, or unusual curves, in ulnar arteries is not well-documented. This study reports two cases of tortuous ulnar arteries found during evaluations for hemodialysis access.
Area of Science:
- Vascular anatomy
- Medical intervention safety
Background:
- Anatomic variations in blood vessels are crucial for safe medical procedures.
- Vessel morphology, architecture, and course can significantly differ between individuals.
- The prevalence of arterial tortuosity in ulnar arteries is not well-established in existing literature.
Observation:
- Two cases of tortuous ulnar arteries were identified.
- These cases were observed in patients undergoing evaluation for upper extremity hemodialysis access.
Findings:
- Tortuosity is a recognized anatomic variant in various arterial systems.
- The specific prevalence of ulnar artery tortuosity requires further investigation.
Implications:
- Understanding ulnar artery anatomy is vital for successful hemodialysis access.
- Further research into vascular anomalies can improve patient outcomes and procedural safety.
Related Concept Videos
01:12Arteries of the Upper Limbs
1.8K
The subclavian artery transitions into the axillary artery as it exits the chest and enters the axillary region. This artery is critical for supplying blood to the shoulder area, including the head of the humerus, through the humeral circumflex arteries. As the vessel continues into the upper arm or brachium, it becomes the brachial artery. This artery plays a key role in vascularizing the brachial region and bifurcates at the elbow into several branches. These branches include the deep...
1.8K
01:15Bones of the Upper Limb: Ulna
3.9K
The ulna and radius are parallel bones of the antebrachium or the forearm. The ulna lies medially and consists of a bony tip called the olecranon process at its proximal end. This hook-like projection articulates with the olecranon fossa of the humerus and forms the "hinged" ulnohumeral part of the elbow joint. This joint facilitates forearm extension and flexion while preventing its hyperextension. Similarly, the coronoid process, another bony projection on the proximal/anterior side...
3.9K
01:22Spinal Nerves: Plexus I
2.1K
Nerve plexuses are networks of interlacing nerves that serve as communication hubs to distribute and organize nerve action across various body regions. The nerve plexuses are organized into the cervical plexus located in the neck region, brachial plexus in the shoulder area, lumbar plexus found in the lower back, sacral plexus situated in the pelvis, and coccygeal plexus located in the coccygeal region.
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
2.1K
01:09Bones of the Upper Limb: Radius
4.2K
The radius is longer of the two bones that make up the human antebrachium or forearm. At the proximal end, the radius articulates with the capitulum of the humerus and the radial notch of the ulna to form the elbow joint. At the distal end, the radius articulates with the ulna via the ulnar notch, forming the distal radioulnar joint. Distally, the radius also attaches to the carpal wrist bones (scaphoid and lunate) to form the radiocarpal joint.
The radius has a nail-shaped head, and a...
The radius has a nail-shaped head, and a...
4.2K
01:17Veins of Upper Limbs
3.2K
The human circulatory system, a marvel of biological engineering, is a complex network of vessels that transport blood throughout the body. Among these, the veins responsible for carrying blood from the upper limbs are divided into two categories: deep and superficial.
The deep venous system is primarily composed of the ulnar and radial veins. The ulnar vein, which drains the fingers through the superficial palmar venous arches, and the radial vein, which serves the palms via the deep palmar...
The deep venous system is primarily composed of the ulnar and radial veins. The ulnar vein, which drains the fingers through the superficial palmar venous arches, and the radial vein, which serves the palms via the deep palmar...
3.2K
01:10The Arch of Aorta
1.4K
The coronary arteries, originating from the ascending aorta, bifurcate from two sinuses located within the ascending aorta. Positioned just above the aortic semilunar valve, these sinuses house essential aortic baroreceptors and chemoreceptors, crucial for maintaining cardiac function. The left coronary artery and the right coronary artery branch off from the left posterior and anterior aortic sinuses, respectively.
Encircling the heart, the coronary arteries form a ring-like structure before...
Encircling the heart, the coronary arteries form a ring-like structure before...
1.4K