<qa>  What is the name of the patient with proximal interphalangeal joint osteoarthPatients with proximal interphalangeal joint osteoarthritis in the index or middle finger, treated with a CapFlex-PIP implant or with a silicone implant and with a follow-up time between 12 and 60 months after primary implantation or patient with one untreated healthy hand without joint osteoarthritis 