leg lift test

The leg lift test is also known as kernigsign. The patient's hip flexion is at a right angle, then the knee is stretched, below the 135° angle, the knee extension is limited, and the pain in the posterior part of the femoral knee is positive. It is best not to do too vigorous and excessive exercise a few days before the test to prevent excessive secretion of muscle lactic acid, muscle soreness and affect the test results. If the doctor raises the patient's calf and stretches the knee, if there is pain, tell the doctor promptly so that the doctor can make the correct diagnosis and treatment. Basic Information Specialist Category: Neurological Classification: Other examinations Applicable gender: whether men and women apply fasting: not fasting Analysis results: Below normal: Normal value: no Above normal: negative: Pain occurred only when the knee stretched >135 degrees. Positive: 1. bilateral positive: various causes of meningitis, meningeal encephalitis, subarachnoid hemorrhage, meningeal leukemia, meningeal tumor, occipital foramen, soft meningitis and other spinal nerve roots are stimulated. It has a wide range of pain, not only for the lower back and lower limbs, but also for the chest and back. 2. Unilateral positive: Sciatica is positive on the affected side, negative on the healthy side, and pain is limited to the waist and affected limb. Tips: It is best not to do too vigorous and excessive exercise a few days before the test, to prevent excessive muscle lactate secretion, muscle soreness and affect the test results. Normal value Pain occurred only when the knee stretched >135 degrees. Clinical significance Abnormal result 1, bilateral positive: various causes of meningitis, meningeal encephalitis, subarachnoid hemorrhage, meningeal leukemia, meningeal tumor, occipital foramen, soft meningitis and other spinal nerve roots are stimulated. It has a wide range of pain, not only for the lower back and lower limbs, but also for the chest and back. 2, unilateral positive: sciatica is positive on the affected side, negative on the healthy side, and the pain is limited to the waist and the affected limb. The people who need to be examined have various diseases and injuries involving the meninges and spinal cord membranes, lumbar vertebrae hyperplasia, intervertebral disc prolapse and other diseases involving the lumbosacral nerve. Positive results may be diseases: lumbar disc herniation, lumbar spondylosis, subarachnoid hemorrhage, meningitis considerations Forbidden before examination: It is best not to do too vigorous and excessive exercise a few days before the examination to prevent excessive secretion of muscle lactic acid and muscle soreness which may affect the examination results. Requirements for inspection: 1. Take the supine position during the examination, the two lower limbs are close together and the muscles are relaxed. 2. When the leg is stretched and the knee is painful and resistant, do not continue to stretch. 3. If the doctor raises the patient's calf and stretches the knee, if there is pain, tell the doctor promptly so that the doctor can make the correct diagnosis and treatment. Inspection process 1. The patient takes the supine position, the two lower limbs are close together and the muscles are relaxed. 2. The examiner first bends the hip joint and knee joint of one lower limb to 90 degrees, then lifts the patient's lower leg and knees by hand, paying attention to the change of resistance. 3, to observe whether the patient has pain, the degree of resistance of the knee joint to the greater extent, the contralateral lower limb activity. 4, bilateral limb control, test 3, 4 times. 5, the knee joint stretch > 135 degrees before the pain, resistance is negative. One or more of the following conditions are positive: 1. When the knee stretches 135 degrees, the resistance increases significantly and resistance appears. 2. Pain along the sciatic nerve in the knee joint at 135 degrees. 3. The above phenomenon may or may not be accompanied by flexion of the contralateral lower limb. Not suitable for the crowd Inappropriate people: calves, hip joints, knee joints themselves, deformities. Adverse reactions and risks Nothing.

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