What is the radial collateral ligament?
The radial collateral ligament (RCL) is a strong, short, thin band of tissue that connects from the humerus (upper arm bone) to the radius (one of two forearm bones). The role of the RCL is to provide stability against inner to outer stress on the elbow.
What are the collateral ligaments of the hand?
In human anatomy, the radial (RCL) and ulnar (UCL) collateral ligaments of the metacarpophalangeal joints (MCP) of the hand are the primary stabilisers of the MCP joints. They have two parts: the cord-like collateral ligaments proper located more dorsally and the accessory collateral ligaments located more volarly.
What are the 2 collateral ligaments for the elbow?
The anterior band of the ulnar or medial collateral ligament (MCL) complex is the main static stabilizer of the elbow against valgus and internal rotation stress. The lateral collateral ligament (LCL) complex resists excessive varus and external rotational stress.
What type of joint is MCP?
The metacarpophalangeal (MCP) joints are diarthrodial joints where the large convex heads of the distal aspect of the metacarpals articulate with the concave-shaped proximal aspect of each phalange. The articulating surface of each metacarpal head and proximal phalange is composed of hyaline cartilage.
What movement does the radial collateral ligament prevent?
Radial collateral ligament, which prevents varus movement (adduction/ ulnar deviation) of the forearm.
Are there two radial collateral ligaments?
The radial collateral ligament (RCL), lateral collateral ligament (LCL), or external lateral ligament is a ligament in the elbow on the side of the radius….Radial collateral ligament of elbow joint.
| Radial collateral ligament | |
|---|---|
| To | annular ligament |
| Identifiers | |
| Latin | ligamentum collaterale radiale |
| TA98 | A03.5.09.006 |
Which joint is reinforced by the ulnar and radial collateral ligaments?
the elbow joint
The structure indicated is the radial collateral ligament of the elbow. The fibrous joint capsule which surrounds the elbow joint is reinforced medially and laterally, where it thickens to form the collateral ligaments – the radial collateral ligament and the ulnar collateral ligament.
Where are MCP joints?
The finger bones are called phalanges. The metacarpophalangeal joint (MCP joint), or knuckle, is where the finger bones meet the hand bones. At the MCP joint, the fingers can move in multiple directions.
What tendon flexes the MCP joint?
Muscles acting on the metacarpophalangeal joint Flexion of the thumb is mainly produced by flexor pollicis brevis, aided by flexor pollicis longus muscle. Flexion of digits 2 to 5 are produced by flexor digitorum superficialis, flexor digitorum profundus, lumbricals and flexor digiti minimi brevis (fifth digit).
What is radial collateral ligament sprain?
The Lateral collateral ligament of the elbow (LCL) is sometimes also called the radial collateral ligament (RCL). This ligament can become sprained or torn as a result of a sports injury. Because the LCL has an important role in supporting the elbow, injury can lead to elbow instability.
Is the radial collateral ligament and extensor tendon?
MRI of the elbow (T1 weighted) showing an unimpaired radial collateral ligament and extensor tendon….Radial collateral ligament of elbow joint.
| Radial collateral ligament | |
|---|---|
| From | lateral epicondyle |
| To | annular ligament |
| Identifiers | |
| Latin | ligamentum collaterale radiale |
Is UCL same as MCL?
MCL Injuries of the Elbow (It should not be confused with the MCL of the knee.) Sometimes also referred to as the ulnar collateral ligament (UCL), the MCL of the elbow attaches the ulna (which, along with the radius, makes up the bones of the lower arm) to the humerus, the bone of the upper arm.
Where does the radial collateral ligament insert?
The radial collateral ligament inserts distally at the radial surface of the scaphoid bone 1-5.
What is the prevalence of collateral ligament (MCP) injuries?
Isolated injuries to collateral ligaments of the MCP joints are uncommon, except for those of the MCP joint of the thumb, which is the focus of this chapter. Ulnar collateral ligament (UCL) injuries of the MCP joint of the thumb (gamekeeper’s thumb or skier’s thumb) occur more often than radial collateral ligament (RCL) injuries.
What are the collateral ligaments of the metacarpophalangeal joints?
Collateral ligaments of metacarpophalangeal joints. In human anatomy, the radial (RCL) and ulnar (UCL) collateral ligaments of the metacarpophalangeal joints (MCP) of the hand are the primary stabilisers of the MCP joints. They have two parts: the cord-like collateral ligaments proper located more dorsally and…
What is the medical term for radial ligament?
Anatomical terminology. In human anatomy, the radial (RCL) and ulnar (UCL) collateral ligaments of the metacarpophalangeal joints (MCP) of the hand are the primary stabilisers of the MCP joints. They have two parts: the cord-like collateral ligaments proper located more dorsally and the accessory collateral ligaments located more volarly.
What happens if you tear the MCP ligament?
An injury to the MCP ligament may result in a simple strain to a complete tear of both proper and accessory ligaments ( 1 ). Isolated injuries to collateral ligaments of the MCP joints are uncommon, except for those of the MCP joint of the thumb, which is the focus of this chapter.