Heavy lower limb movements, feeling heavy when lifting the foot high and heavy when landing, are symptoms of sensory ataxic gait. Differential diagnosis of heavy lower limb movement, high foot lift and heavy landing: 1. Drunkard’s gait Because the center of gravity is not easily controlled, the distance between the legs widens when walking, the body sways unsteadily to both sides after lifting the legs, and the upper limbs often sway in the horizontal direction or forward or backward. Sometimes it cannot stand steadily, and the instability is more obvious when changing position, and it cannot walk in a straight line. This kind of gait is also called waddling gait, which is seen in ataxia caused by cerebellar lesions, such as cerebellar tumor, cerebrovascular disease, tumor, inflammation, degeneration, pontocerebellar horn tumor, olive pontocerebellar cerebellar degeneration, alcoholic cerebellar degeneration, cancerous spinal cerebellar degeneration. Cerebellar atrophy, cerebellitis, brainstem tumor, posterior inferior cerebellar artery thrombosis, frontal lobe lesion, inner ear vertigo, vestibular neuronitis, etc. 2.Sensory ataxic gait This refers to those caused by deep sensory disorders. It is characterized by walking with a large stride, wide spacing between legs, higher foot lift, strong footpath hitting the ground, eyes gazing at both feet, partially relieved when eyes are open, unstable or even unable to walk when eyes are closed. It is often accompanied by sensory impairment and positive Romberg’s sign, which is seen in subacute joint degenerative spinal consumption, etc. 3. Spastic hemiplegic gait In hemiplegia, the lower limb on the affected side appears longer due to high tone of the extensor muscles, and flexion is difficult. When the patient walks, the coordinated swinging action of the upper limb on the hemiplegic side disappears, and the lower limb is straightened and externally rotated, and the pelvis is elevated when lifting the gait. It is caused by damage to the cone bundle on one side, mostly seen in cerebrovascular diseases. 4, spastic paraplegic gait Because of the increased tension of the lower limb adductor muscle group, resulting in walking with the legs crossed medially, shaped like scissors, so also known as scissor gait. It is seen in transverse spinal cord damage, cerebral palsy, etc. 5, panic gait Due to the increase in generalized muscle tone, the start is slow, the pace is small, the feet rub the ground, the two upper limbs swing back and forth with the loss of joint action, the trunk leans forward, the center of gravity shifts forward, so the small steps rush forward and walk, such as chasing the center of gravity and can not stop immediately, looks like panic, also known as chasing the center of gravity gait or forward gait. See in tremor paralysis and diseases that can cause tremor paralysis syndrome. 6, cross-threshold gait As the foot drops, in order to make the affected foot tip off the ground, the affected limb is raised very high, such as across the threshold of the posture. It is seen in common peroneal nerve palsy, etc. 7, swaying gait due to pelvic girdle muscle and lumbar muscle weakness, atrophy of the lower limbs and pelvic muscles, when standing so that the spine convexity to maintain the balance of the body’s center of gravity, walking because of muscle weakness pelvis can not be fixed, so the hips sway left and right like a duck walk, also called duck gait. See in progressive myotonic dystrophy. 8, congenital muscular dystrophy skeletal muscle tonic spasm when using force, so when walking or running, if you want to stop at that time, muscle tension can not immediately relax, and cause a fall. Patients can not stand with eyes closed, swaying prone to fall, when the eyes are open vision can be partially compensated; walking with heavy movement of the lower limbs, high lift foot, heavy landing, night walking or eyes closed aggravated.