Motorcycle trauma.
D000063:Accidents, Traffic / Q000517:prevention & control; D000671:Amputation, Surgical; D002140:California; D006259:Craniocerebral Trauma / Q000517:prevention & control; D005260:Female; D050723:Fractures, Bone / Q000209:etiology / Q000401:mortality / Q000601:surgery; D006260:Head Protective Devices; D006801:Humans; D004204:Joint Dislocations / Q000209:etiology / Q000401:mortality / Q000601:surgery; D008297:Male; D008887:Military Medicine; D012189:Retrospective Studies; D013898:Thoracic Injuries / Q000209:etiology / Q000401:mortality / Q000601:surgery; D014481:United States; D014947:Wounds and Injuries / Q000209:etiology / Q000401:mortality* / Q000601:surgery