I've got what I can only describe as a 'soft' joint on my left hand thumb, but that was caused by crashing into a tree on my mountain bike. Also I broke my wrist and tore ligaments in both hands crashing my mountain bike. The only running related hand injuries I can think of are grazes to palms, and once I did my knuckles (...and scuffed my KIMM Sac badly!!) when tripping. Thats usually been over paving slabs that stick up slightly tho'!!!