i dont think wrist straps would help at all bcuz since the problem is at the thumb itself and most of the muscles of the thumb are in the hand, what i think is probably the joint at the base of the thumb, but if u feel like half of your palm gets numb sometimes and hurts it may be bcuz u are applying alot of pressure on the base of ur palm and hurting the median nerve, but its very likely its the joint problem bcuz the thumb is the finger we mostly use and hence it gets worn down, and if u feel or hear a crackling sound when u move ur thumb and it hurts it may be arthritis