Hand Surgery In my medical practice in Milano and Vienna I offer the following hand surgery treatments.For further information, do not hesitate to contact us! Carpal tunnel syndrome (median nerve)Guyon’s canal syndrome (ulnar nerve)Cubital tunnel syndrome (ulnar nerve)Snapping fingersDupuytren’s diseaseDe Quervain’s diseaseTendon injuries and reconstructionsCysts of the hand and wristTumors of the Hand