i've always been a big believer in using heavy free weight compound exercises for building mass. however, i have recently encountered a problem with triceps and my left elbow pain due to an old football injury. i just can't go any heavier on triceps movements without unbearable elbow pain. i've tried everything....skulls, closegrip, reversegrip, dumbell extentions, dips. i can do these with higher reps, but as soon as i use a weight heavy enough to fail at under about 10-12 reps, forget it. the only thing that doesn't bother my elbow is cable exercises. so i guess my question is can cables really be used for building size? is this what i should resort to? or should i just only work a higher rep range using the compound movements. any help you can give would be great. thanks