If my fingers and toes are all cold, I can say "My digits are cold." However, if my shoulders and hips are aching, (or elbows and knees, or wrists and ankles), I don't know of a word to collectively describe these "similar" parts of the body. Anybody know of any words to describe these?
Joints is the best option. You can call you fingers and toes your carpels and tarsals respectively, if you're referring to the lower-digits.
You are describing an extremity (extremities - plural) of the body.
The definition, from dictionary.com is given as:
- a limb of the body.
I feel like that works well.