 [ Symptoms ] cause of elbow pain  about a week ago i hit my elbow on a piece of furniture ever since my lower elbow causes me pain whenever i fully extend my arm pick up an item more than probably 5 pounds or if i apply pressure to a bent arm doing a pushup for example i am trying to get in shape for the military and would like to continue working out as soon as possible thanks in advance [ Disease ] sorry to hear you are going through this unfortunately diagnosing this problem requires a physical examination a number of things could be causing the symptoms you describe anything from an injured ligament to a bone chip could be the culprit if this is an injury to a ligament for example rest is the main cure it can take awhile for that type of injury to get better i suggest you visit your primary care provider to get a diagnosis your doctor can tell you what to do to treat this if anything hope this helps