Is physiotherapy the correct treatment for ulnar nerve entrapment?

Sometimes: Ulnar nerve entrapment typically occurs at the elbow, but can also occur at the wrist. A short course of anti-inflammatories, bracing, and activity modification can usually resolve the symptoms. A referral to a specialist may be needed if symptoms persist.

Try 1st/mayneed surg: One can try Physiotherapy (Physical therapy) first but if you continue to have weakness and numbness then you may require surgical decompression without/with transposition. If your entrapment is at elbow then do not rest that arm on anything and you may benefit from a neoprene sleeve.

It is helpful: Yes, sometimes this is the right therapy. Exercises and splinting are often helpful for ulnar nerve maladies. There are times however when surgery is needed, normally this is in the setting of prominent hand weakness or when physiotherapy is not successful.