Post-Market Clinical Follow-up Study to Evaluate the Safety and Performance of Remplir™ Collagen Membrane in Peripheral Nerve Surgery

The exposure being observed is the use of Remplir collagen membrane in peripheral nerve surgery. The observation period will be dependent on the specific indication/intention of the surgical procedure and associated length of time required to assess the success of the procedure: - Peripheral nerve protection (e.g. during treatment of compression syndromes/peripheral nerve tumour excision, or prophylactic use during other surgical procedures) - 6 months - Neuroma management (treatment or prevention) - 12 months - Reconstruction of peripheral nerve (including nerve transfer/free-functioning muscle transfer) - up to 24 months Participants still in normal clinical follow-up will be asked to provide consent for data collection, and to complete a global rating of change questionnaire. All patients who underwent (or undergo) a peripheral nerve procedure using Remplir with the site investigator(s) from the 21st November 2020 until closure of prospective recruitment will be screened for eligibility.