Soft waist can't straighten up

Introduction Low muscle tone - paralyzed dyskinesia: involving the head and neck and the waist, such as the neck, can not lift the head, the waist can not be straight up and bulging, walking can not step and lift the legs and drag the ground. This is a clinical manifestation of tardive dyskinesia. The neck is soft and can't be raised, the waist can't be straight up, and the waist can't be lifted. When walking, you can't step out, can't lift your legs, and the heel drags the ground. First, there must be a history of taking antipsychotic drugs. The dyskinesia occurs in the patient taking the drug or within 3 months after stopping the drug. The dyskinesia is characterized by rhythmic, abnormal, stereotypical and involuntary movements.

Cause

The cause of the waist can not be straight up:

The generation and maintenance of muscle tone is essentially a complex reflex activity called stretch reflex. Stretch reflexes appear in two forms: one-phase stretch reflex: characterized by a shorter time course and greater muscle strength. For example, knee flexion caused by slamming quadriceps tendon is a typical phase. Stretch reflection. Phase-induced stretch reflection is the basis for the generation of phase tension. 2 Tension stretch reflex: When the muscle is sustained and gently pulled, the stretched muscle produces a sustained and smooth contraction. Tensile stretch reflexes are the basis for positional tension. The stretch reflex arc, also known as gamma-, includes an incoming portion and an outgoing portion.

(1) Muscle lesions of various causes cause damage to the two stretch receptors, causing hypotonia.

(2) Peripheral nerve and nerve root lesions cause gamma- afferent and efferent obstacles, causing hypotonia.

(3) Spinal cord lesions cause damage to -motor neurons and -motor neurons, causing hypotonia.

(4) Brain stem reticular structure, cerebellum, extrapyramidal, cerebral cortex and other diseases lead to central regulation of muscle tension, resulting in low muscle tone.

an examination

Related inspection

Lumbar activity CT examination of the lower back

Check and diagnose that the waist is not straight up:

The neck is soft and can't be raised, the waist can't be straight up, and the waist can't be lifted. When walking, you can't step out, can't lift your legs, and the heel drags the ground. First, there must be a history of taking antipsychotic drugs. The dyskinesia occurs in the patient taking the drug or within 3 months after stopping the drug. The dyskinesia is characterized by rhythmic, abnormal, stereotypical and involuntary movements.

Differential diagnosis

The waist is soft and can't straighten up the symptoms that are confusing:

Lumbar stiffness: Sciatica refers to sciatic neuropathy, a group of painful symptoms that occur along the sciatic nerve pathways, namely the lower back, buttocks, back of the thigh, posterior aspect of the lower leg, and lateral aspect of the foot. The sciatic nerve is the main nerve trunk that governs the lower extremities. Sciatica refers to pain in the sciatic nerve pathway and its distribution (hip, back of the thigh, posterior aspect of the calf, and lateral aspect of the foot).

Swelling and weakness of the waist: There is deep pain between the spinous processes of the spine, and the lower back of the waist is sore and weak. The ligamentitis interinale is a damage caused by a sudden excessive torsion of the spine, which is confused with the damage of the supraspinous ligament in clinical practice.

Lumbar stiffness and lumbar lordosis disappear: When the acute lumbar sprain is examined, the patient's waist is stiff and the lumbar lordosis disappears. There may be scoliosis and sacral tendon spasm. Significant tender points can be found at the site of injury. Acute lumbar sprain is an acute laceration caused by excessive stretching of soft tissues such as the waist muscles, fascia, and ligaments due to external force. It often occurs when lifting heavy objects and strengthening the waist muscles.

The neck is soft and can't be raised, the waist can't be straight up, and the waist can't be lifted. When walking, you can't step out, can't lift your legs, and the heel drags the ground. First, there must be a history of taking antipsychotic drugs. The dyskinesia occurs in the patient taking the drug or within 3 months after stopping the drug. The dyskinesia is characterized by rhythmic, abnormal, stereotypical and involuntary movements.

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