Biceps femoris reflex

Biceps femoris reflex

The biceps femoris reflex (r. musculi bicipitis femoris; synonym: r. peroneofemoral, Erb-Förster-Barre-Levenshtein reflex) is a spinal reflex caused by a blow from a neurological hammer to the biceps femoris tendon. It manifests itself by extension of the leg at the knee joint.

This reflex is provided by an arc consisting of a sensory fiber of the sciatic nerve, which is part of the sciatic plexus, an efferent alpha motor neuron innervating the biceps femoris muscle, and a motor fiber of the femoral nerve.

The central neuron is located in the L5-S2 segments of the spinal cord.

The biceps femoris reflex is often checked by a neurologist during a neurological examination. Its weakening or absence may indicate damage to the nervous system.

The Biceps Femoris reflex is a reflex that controls the movement of the hip and can be impaired as a result of various nervous system diseases or injuries. This reflex is responsible for the contraction and relaxation of the biceps femoris muscle, which is located on the inner thigh.

The study of the hamstring reflex plays an important role in the diagnosis of disorders of the neuromuscular system and allows us to identify disturbances in the functioning of the central nervous system.

Most often, reflex studies are carried out by a neurologist during an examination of the patient. The specialist uses special instruments to assess the symmetry of muscle contraction. If the reflex is impaired, additional diagnostics and treatment may be needed.

Using the hamstring reflex, you can determine the reasons for the loss of this reflex. This may indicate the influence of many factors, such as trauma, spinal cord injury, head injury, tumors, Parkinson's disease, polyneuropathy, circulatory disorders, and diseases of the central nervous system (CNS).