Mobile wad

Mobile wad is a term used in the field of anatomy to describe a group of three muscles located in the posterior compartment of the forearm. These muscles include the brachioradialis, extensor carpi radialis longus, and extensor carpi radialis brevis. The term "mobile wad" is often used in clinical settings, particularly in the context of physiotherapy and orthopedics.

Etymology

The term "mobile wad" is derived from the mobility of this group of muscles and their bundled appearance, similar to a wad of material. The term is not commonly used in formal anatomical texts, but is frequently used in clinical settings.

Anatomy

The mobile wad consists of three muscles:

• The brachioradialis is a muscle of the forearm that flexes the forearm at the elbow. It is also capable of both pronation and supination, depending on the position of the forearm. It is unusual in that it is located in the posterior compartment of the forearm but is actually a flexor, not an extensor.

• The extensor carpi radialis longus is one of the five main muscles that control movements at the wrist. This muscle is quite long, starting on the lateral side of the humerus, and attaching to the base of the second metacarpal bone (metacarpal of the index finger).

• The extensor carpi radialis brevis is shorter than the extensor carpi radialis longus, but it also starts on the lateral side of the humerus. It attaches to the base of the third metacarpal bone (metacarpal of the middle finger).

Clinical significance

The mobile wad is often implicated in cases of lateral epicondylitis, also known as "tennis elbow". This condition is characterized by pain in the outer part of the elbow, which can be caused by overuse of the muscles in the mobile wad.

Related terms

• Lateral epicondylitis
• Forearm
• Brachioradialis
• Extensor carpi radialis longus
• Extensor carpi radialis brevis

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