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In human anatomy, a brevis muscle is a short muscle that gets its name from the Latin word brevis, meaning short. There are several types of brevis muscles in the human body, each with its own specific location and function. For example, the fibularis brevis (or peroneus brevis) is a short muscle in the lateral compartment of the leg that helps to evert the foot and plantarflex the ankle. The adductor brevis muscle, on the other hand, is a hip adductor that widens in a triangular fashion to insert into the upper part of the linea aspera. The brevis muscle also includes muscles in the hand, forearm, and foot, each with their own unique functions.
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What You'll Learn
- The brevis muscle name is derived from the Latin word brevis, meaning short
- Examples include the fibularis, peroneus, extensor carpi radialis, and adductor brevis muscles
- The fibularis/peroneus brevis is a short muscle in the lateral leg muscle group
- It helps to restore the foot to its anatomical position after inversion
- The most common injuries are to the tendon, including tendinopathy and dislocation
The brevis muscle name is derived from the Latin word brevis, meaning short
The name 'brevis muscle' is derived from the Latin word 'brevis', meaning 'short'. In human anatomy, a brevis muscle is typically a short muscle that is part of a larger group of muscles.
One example of a brevis muscle is the fibularis brevis, or peroneus brevis, which is a short muscle that, together with the fibularis longus, comprises the group of lateral leg muscles. The fibularis brevis is a small, relatively short leg muscle that originates from the lower two-thirds of the lateral surface of the fibula. Its muscle fibres traverse downwards and form a tendon that runs just posterior to the lateral malleolus, crossing the ankle and inserting on the styloid process of the proximal fifth metatarsal bone. The fibularis brevis is the only muscle in the lateral compartment of the leg, along with the fibularis longus, and it is shorter and has a thicker muscle belly than the fibularis longus. The main function of the fibularis brevis is to evert the foot at the subtalar joint, which helps to restore the foot to its anatomical position after it has been inverted.
Another example of a brevis muscle is the extensor digitorum brevis muscle, which is a muscle on the upper surface of the foot that helps extend digits 2 through 4. The brevis muscle can also refer to the extensor pollicis brevis muscle, a skeletal muscle on the dorsal side of the forearm, or the abductor pollicis brevis muscle, a muscle in the hand that functions as an abductor of the thumb. In the hand, the brevis muscle can also refer to the flexor digiti minimi brevis, a muscle that flexes the little finger, or the flexor pollicis brevis muscle, which flexes the thumb.
The adductor brevis muscle is a brevis muscle that widens in a triangular fashion and is inserted into the upper part of the linea aspera. It is primarily known as a hip adductor and is innervated by the anterior and posterior branches of the obturator nerve.
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Examples include the fibularis, peroneus, extensor carpi radialis, and adductor brevis muscles
The term ""brevis" in Latin means "short", and in human anatomy, a brevis muscle is typically a short muscle. Examples include the fibularis, peroneus, extensor carpi radialis, and adductor brevis muscles.
The fibularis brevis muscle, also known as the peroneus brevis, is a short muscle in the lateral part of the lower leg, deep to the fibularis longus. It is one of three ankle everters, or fibularis muscles, and is responsible for 63% of the power needed to evert the foot, as well as assisting in plantar flexion. The fibularis brevis originates from the distal two-thirds of the lateral surface of the fibula and the adjacent part of the anterior intermuscular septum. Its tendon passes downwards and loops behind the lateral malleolus, inserting on the tuberosity of the fifth metatarsal bone.
The peroneus brevis is also a short muscle in the lateral part of the lower leg, deep to the fibularis longus. It is one of the muscles commonly injured during a lateral ankle sprain, and its tendon is the most commonly dislocated tendon. The peroneus brevis is supplied by the superior and inferior branches of the anterior tibial artery.
The extensor carpi radialis brevis is a fusiform muscle found in the lateral part of the posterior forearm. It is the shortest of two muscles, with the other being the extensor carpi radialis longus. The extensor carpi radialis brevis contracts together with the extensor carpi radialis longus and flexor carpi radialis to contribute to producing hand abduction (radial deviation). This action is vital in a sequence of muscle contractions needed for clenching a fist or making a grip.
The adductor brevis is a muscle in the thigh used for moving the hip. It is susceptible to injury, especially with sudden changes in direction, which can cause a quick adduction against a large abduction force, stressing the tendon. An early assessment is essential to prevent it from becoming a career-threatening injury for athletes.
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The fibularis/peroneus brevis is a short muscle in the lateral leg muscle group
The word "brevis" in Latin means "short". In human anatomy, a brevis muscle refers to a short muscle. For instance, the extensor carpi radialis brevis muscle is a muscle in the middle of the forearm that manipulates the wrist so that the hand moves away from the palm and towards the thumb.
The fibularis brevis or peroneus brevis is a short muscle in the lateral leg muscle group. It is also known as the Musculus fibularis brevis. Together with the fibularis longus, it comprises the group of lateral leg muscles. The fibularis brevis originates from the distal two-thirds of the lateral surface of the fibula and the adjacent part of the anterior intermuscular septum. The muscle belly of the fibularis brevis is found posterior to the extensor digitorum longus and fibularis tertius, and anterior to the fibularis longus, flexor hallucis longus, and distal part of the soleus muscle. The fibularis brevis gives off a broad, flat tendon at the distal third of the leg, which then continues caudally to pass behind the lateral malleolus to enter the lateral part of the foot. The tendon finally inserts on the tuberosity of the fifth metatarsal bone.
The fibularis brevis and fibularis longus muscles function to plantarflex the foot (pointing the toes downward) and evert the foot (turning the sole outward). The fibularis brevis also crosses the subtalar (talocalcaneal) and talocrural (ankle) joints, contributing to actions produced across these joints. Its main function is to evert the foot at the subtalar joint, helping to restore the foot to its anatomical position after it has been inverted. The fibularis brevis is innervated by the superficial fibular (peroneal) nerve (L5-S1), a branch of the common fibular division of the sciatic nerve. The tendon of the fibularis brevis and its accompanying muscle are supplied by an anastomotic network around the ankle, including the arcuate, anterior lateral malleolar, and fibular perforating arteries.
The fibularis brevis is susceptible to injuries, particularly tendon injuries caused by inversion or supination forces. Lateral ankle sprains can result in a tear and swelling at the lateral ankle. During a supination-adduction injury, the peroneus brevis tendon could pull at the base of the fifth metatarsal, causing an avulsion fracture known as a Jones Fracture.
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It helps to restore the foot to its anatomical position after inversion
The fibularis brevis, or peroneus brevis, is a short muscle that, along with the fibularis longus, forms the group of lateral leg muscles. The fibularis brevis originates from the distal two-thirds of the lateral surface of the fibula and the adjacent part of the anterior intermuscular septum.
The fibularis brevis has a tendon that runs just posterior to the lateral malleolus, crossing the ankle and inserting on the styloid process of the proximal fifth metatarsal bone. The tendon initially runs anterior to the fibularis longus tendon as they pass behind the lateral malleolus, with the fibularis brevis tendon superior to the fibularis longus tendon.
The fibularis brevis is supplied by an anastomotic network of arteries around the ankle, including the arcuate, anterior lateral malleolar, and fibular perforating arteries. The muscle receives innervation from the superficial peroneal nerve, and its arterial supply is by muscular branches of the peroneal artery.
The main function of the fibularis brevis is to evert the foot at the subtalar joint, which helps to restore the foot to its anatomical position after inversion. This action of eversion involves tilting the sole of the foot away from the midline. Inversion, on the other hand, refers to tilting the sole of the foot towards the midline. The fibularis brevis also contributes to plantarflexion of the foot, which is the action of pointing the toes downward.
Injuries to the fibularis brevis tendon are common, often occurring with lateral ankle sprains or during Supination-Adduction injuries. These injuries can include tendinopathy, dislocation, sprain, or tearing of the tendon, which can cause swelling at the lateral ankle.
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The most common injuries are to the tendon, including tendinopathy and dislocation
A brevis muscle is a short muscle. In human anatomy, the term "brevis muscle" can refer to several different short muscles in the body. These include:
- Extensor carpi radialis brevis muscle, which is a muscle in the middle of the forearm that manipulates the wrist so that the hand moves away from the palm and towards the thumb.
- Extensor pollicis brevis muscle, a skeletal muscle on the dorsal side of the forearm.
- Abductor pollicis brevis muscle, a muscle in the hand that functions as an abductor of the thumb.
- Flexor digiti minimi brevis, a muscle in the hand that flexes the little finger.
- Flexor pollicis brevis muscle, a muscle in the hand that flexes the thumb.
- Palmaris brevis muscle, a thin, quadrilateral muscle, beneath the integument of the ulnar side of the hand.
- Adductor brevis muscle, a muscle in the thigh used for moving the hip.
- Extensor digitorum brevis muscle, a muscle on the upper surface of the foot that helps extend digits 2 through 4.
- Extensor hallucis brevis muscle, a muscle on the top of the foot that helps to extend the big toe.
- Fibularis brevis, or peroneus brevis, is a short muscle that, together with the fibularis (peroneus) longus, comprises the group of lateral leg muscles.
The fibularis brevis is prone to several common injuries, most of which are to the tendon. The most common injuries are tendinopathy, dislocation/subluxation, sprain, or splitting. Tendon injuries to the fibularis brevis are usually caused by inversion or supination forces. Tendinopathy, or tendon inflammation (tendinitis), can develop with repetitive overuse of the tendons or may happen suddenly due to an ankle injury. The tendons or the lubricated tendon sheaths around them can swell, making it hard for them to move smoothly.
During a Supination-Adduction injury, the peroneus brevis tendon could be injured and could pull at the base of the 5th Metatarsal, causing an avulsion fracture known as a Jones Fracture. A lateral ankle sprain can also cause the fibularis brevis to tear and swell at the lateral ankle. Longitudinal tears are the most common finding in peroneus brevis tears, but occasionally a "bucket handle" tear is associated with a tendon split where the peroneus longus acts as a wedge.
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Frequently asked questions
Brevis muscles are short muscles in the human body. The name brevis comes from the Latin word for "short".
Some examples of brevis muscles include the fibularis (or peroneus) brevis, extensor carpi radialis brevis, extensor pollicis brevis, and adductor brevis.
The fibularis brevis is a short muscle in the lateral compartment of the leg. Its main function is to evert the foot and plantarflex the ankle, helping to restore the foot to its anatomical position after it has been inverted.
