The lateral intermuscular septum separates the anterior and posterior compartments of the arm and extends from the crest of the greater tuberosity of the humerus to the lateral epicondyle where it becomes confluent with the annular ligament encircling the radial head [10].
What is the function of intermuscular septa?
1. A connective tissue septum that separates two muscles, esp. one from which muscles may take their origin.
What is medial intermuscular septum?
Anatomical terminology The medial intermuscular septum of thigh is a fold of deep fascia in the thigh. It is between the vastus medialis, and the adductors and pectineus. It separates the anterior compartment of the thigh from the medial compartment of the thigh.
What is the anterior intermuscular septum?
Anatomical terminology The anterior intermuscular septum of leg or anterior crural intermuscular septum is a band of fascia which separates the lateral from the anterior compartment of leg.
Where is the intermuscular septa?
We find intermuscular septa in both the upper and lower extremities. In the upper #arm, the #medial and #lateral intermuscular septa divide the flexors (biceps et.al.) from the extensor muscles (triceps).
Does deep fascia have fat?
A fascia is a connective tissue that surrounds muscles, groups of muscles, blood vessels, and nerves, binding those structures together. There are three types of fascia: superficial fascia, deep fascia, and subserous (or visceral) fascia. However, superficial fascia contains fat, while deep fascia does not contain fat.
Does the lateral intermuscular septum exist?
Object: Other than very simple descriptions of the existence of the lateral intermuscular septum (LIS), the literature offers almost nothing about its detailed anatomy, relationships to the radial nerve, and proximal branches. To further elucidate its morphological characteristics, the present cadaveric study was performed.
Is the septum continuous with the fascia of the arm?
This intermuscular septum is actually continuous with the deep fascia of the arm. The deep fascia surrounds all the muscles of the arm and is continuous with this intermuscular septum where it attaches to the humerus, which also separates the flexor and extensor compartments.
What are the two compartments of the forearm?
The forearm is divided into the anterior compartment and the posterior compartment by the deep fascia, lateral intermuscular septum and the interosseous membrane between the ulna and radius. Article: Muscles.
Why is the anterior compartment of the upper arm called flexor?
The anterior compartment is the flexor compartment because these muscles flex the forearm. The posterior compartment of the upper arm is the extensor compartment because it extends the forearm. It’s not shown on this model, but the anterior compartment is separated from the posterior compartment by intermuscular septa and also, the humerus.
