Conditions + Specialisms

Hello all! I have been contacted by a connection of mine, who is looking for advice:

UPDATED 12/07/19: The individual who reached out to me mistakenly said he had carpel tunnel syndrome when in fact it was Dupuytren's contracture.

'Please can you help! My dad, age 73, had an operation on his (dominant) right hand in January 2019, with a further operation in April. The wound has now "over granulated" and hence is not healing enough for more aggressive therapy. The issue is that he is unable to mobilise two fingers in his hand. The hand is becoming more stuck and stiff, due to lack of use. He is using a night splint, but unable to mobilise the hand at all currently.

My dad wonders whether this is a trapped nerve, or whether the operation has resulted in long lasting damage. He does not want to have more operations, as you can imagine. He is seeing a physio and OT, but we wonder also whether a private hand therapist may also be of use?

What sort of treatment is available for this particular problem? Any aids and adaptations that could help? He is a fit and healthy man - gardener, squash player, etc. He can't eat, read, or do anything ADL wise. He is walking every day for his health, but is very fed up following the operation.

Any advice at all would be most welcome.