Short Term Follow-up of Patient Implanted With the Proximal Interphalangeal Implant

Inclusion Criteria: * Any patient who needs a proximal interphalangeal joint arthrodesis for whose surgeon has recommended that a proximal Interphalangeal Implant Ipp-On be implanted * Age \>= 18 years * Have willingness to give his/her Data Transfer Authorization Exclusion Criteria: * Contraindication of the implantation of the Ipp-On The implant should not be used in a patient who has currently, or who has a history of: • Active local or systemic infection * Severe peripheral vascular disease * Severe longitudinal deformity * Insufficient quantity or quality of bone to permit stabilization of the arthrodesis * Conditions that restrict the patient's ability or willingness to follow postoperative instructions during the healing process * Suspected or documented metal allergy or intolerance. * History of prior mental illness or patient demonstrates that their mental capacity may interfere with their ability to follow the study protocol