Validation of Two New Questionnaires for Dupuytren's Disease

Inclusion Criteria: * Subject has a diagnosis of Dupuytren's Disease in at least one finger * Patients will be 35 years of age or older * Patients will be able to read, speak, and understand English * Patients will be able to provide voluntary written consent to participate Exclusion Criteria: * Female patients who are nursing or pregnant, or plan to become pregnant during the treatment phase. * Patient has a chronic muscular, neurological or neuromuscular disorder that affects the hands. * Patient has a known allergy to collagenase or any other excipient of XIAFLEX. * Patient has received any collagenase treatments before the first dose of XIAFLEX. * Any history of or current medical condition which in the investigator's opinion would make the subject unsuitable for enrollment in the study