What is a palmaris longus definition?
The Palmaris longus (PL) muscle is a long, slender muscle which is usually present in the superficial volar compartment of the forearm, interposed between the Flexor Carpi Ulnaris and the Flexor Carpi Radialis muscles. The absence of the palmaris longus does not have an effect on grip strength.
What is the palmaris longus used for in primates?
This tendon is attached to an ancient muscle called the palmaris longus, which was primarily used by tree-dwelling apes (lemurs and monkeys, for instance) to help them move from branch to branch.
Is it good to have palmaris longus?
The role of this muscle is to help with wrist flexion. The palmaris longus muscle is one of the most variable muscles of the body. Although in the upper limbs its function is considered insignificant, in the event of tendon grafting, it is considerably important.
What is the meaning of Palmaris?
the palm of the hand
Medical Definition of palmaris : either of two muscles of the palm of the hand: a : palmaris brevis.
What’s the origin of the palmaris longus?
Description: The Palmaris longus is a slender, fusiform muscle, lying on the medial side of the preceding. It arises from the medial epicondyle of the humerus by the common tendon, from the intermuscular septa between it and the adjacent muscles, and from the antibrachial fascia.
Why do we have a palmaris longus?
The function of the palmaris longus is uncertain in humans, but it is generally considered to be a contributor for flexing the hand at the wrist and tensing the palmar aponeurosis. Additionally, it is a well-known common option for use in tendon grafts.
What is the origin of the palmaris longus?
Is palmaris longus rare?
The palmaris longus is a muscle visible as a small tendon located between the flexor carpi radialis and the flexor carpi ulnaris, although it is not always present. It is absent in about 14 percent of the population; however, this number can vary in African, Asian, and Native American populations.
Where is the palmaris longus in the hand?
Palmaris longus is a long muscle of the anterior forearm. It extends from the distal humerus to the root of the hand, although it can be absent in 10% of people.
Is the palmaris longus muscle a variable muscle?
The palmaris longus muscle is a variable muscle. The most common variation is its absence. Several in vivo and in vitro studies have documented the prevalence of absence of the PL tendon in different ethnic groups.
How is the palmaris longus tendon used in surgery?
Palmaris longus tendon has been used for correction of claw-finger deformities because it is long enough (12-15cms.) & its tendon fibres are parallel & loosely held, Palmaris longus tendon has been used in opponensplasty and radial palsy, the Palmaris longus muscle has been found to be of adequate strength to substitute for paralyzed lumbricals.
Are there any tests to detect palmaris longus?
Over the years, several clinical tests have been developed by practitioners from around the world to accurately detect the Palmaris Longus muscle. These tests merely rely upon certain positions of the wrist and hand in order to put the muscle in a state of tension so that it’s tendon is both visible and palpable.