Potential candidates for this study will be identified in one of 2 ways. Firstly, when patients are listed for ACL reconstruction surgery whilst attending orthopaedic out-patient clinics at the RD+E Hospital. At the time of this consultation they will be offered the opportunity to participate in the study. They will be given a copy of the information about the study and the consent form. They will have the opportunity therefore, to discuss the study with their family, friends or General Practitioner (GP) if they wish to do so. It will be explained that a member of the research team will contact them by telephone or letter to ask if they wish to participate in this research. Alternatively, patients will be identified from existing surgical waiting lists. In this case, they will be contacted by their surgeon in writing asking for their permission for one of the study team to approach them about the study. If permission is given, the patient will be sent a copy of the participant information sheet and a consent form so that they can decide if they would like to be involved. One of the research team- either the study coordinator or one of the research nurses- will then contact the patient and if they are willing to be involved, will obtain written consent for study participation. Consent is will be obtained at the preparation for surgery appointment which usually occurs 2-4 weeks before surgery.