Mr Sooz has Dupuytren's and we've lost count of the number of operations he has had. The tendons controlling his fingers gradually shorten and have to be cleaned and snipped along their length to extend them. His hands are a mass of scar tissue but they can still play the guitar. He does have much reduced strength in them though and the condition is never "cured". This needle aponevrotomy sounds interesting if it can do the job without the extremely painful invasive surgery.