Ulnar nerve injuries generally occur in two ways, either as a result of trauma or as a result of compression. Trauma can result in either a pulling injury or a sharp instrumental injury that results in a complete severance of the nerve. If it is a pulling injury, it can usually be treated conservatively, such as giving nerve-nourishing drugs, like vitamin B, methylcobalamin, adenosylcobalamin, and rat nerve growth factor. If the nerve is severed due to sharp object injury, surgical suturing is required and the ulnar nerve is placed anteriorly and the affected limb is immobilized in a cast for three weeks. If the ulnar nerve is damaged due to compression, such as elbow canal syndrome, surgical release is also needed, followed by medication to nourish the nerve. In addition, physical therapy and acupuncture can be used to help the nerve recover, and some medications to improve the blood supply to the nerve can also be used to promote the recovery of the nerve after surgery.