I don't think mine healed right either because 3 of them broke and I was told I had pulled tendons. The last one was a rebreak.Truthfully I don't really know. I had a bad fall last year and landed squarely on my back, and fractured my shoulder blades. Doc thinks I may have fractured my ribs at the same time, and they hadn't healed properly. Thinks me handling heavy Garden equipment over my head.. tree pruners etc.. might have caused them to snap again..