Is a splint a good way to fix a stiff elbow?

This is a difficult question to answer because there are too many unknowns. The type of treatment chosen to treat a stiff elbow depends on what has caused the stiffness, how long the stiffness has been present, how stiff the elbow is, and if the person needs full range of motion of the elbow or is ok with a little be less than full range.

In some cases, splints are used with good results, but again, it depends on why the elbow is stiff to begin with.