Unusual site of yellow ligament ossification- cervical spine

The patient is an 80-year-old man who presented with pain and paresis in all four limbs about a year ago. The patient’s symptoms have worsened over the past month. The force of the patient’s upper limbs was about three-fifths and the lower limbs were about four-fifths. The patient complained of numbness and tingling in all four limbs, especially the upper limbs. Sphincter disorder has been characterized by urinary incontinence, which began a year ago and has now worsened over the past few months. Hoffman’s sign was positive on both sides. Introduction