Ian Maurice Pinder (known to his colleagues as IMP) was a consultant orthopaedic surgeon in Newcastle upon Tyne. He studied medicine at Sheffield University and qualified MB, ChB in 1961. In 1966 he passed the fellowship of the Royal College of Surgeons of Edinburgh and worked at the Newcastle Royal Infirmary. He commenced his consultant career at the Hexham General Hospital before moving to the Freeman Hospital. During his time there it was said that his insatiable work ethic led him to take on the surgical treatment of large numbers of patients who suffered from severe deformities due to rheumatoid diseases. In many cases this restored their mobility and independence for life. Inevitably this led to collaboration with the rheumatology department and he was instrumental in the foundation of a combined musculoskeletal service at the hospital. For many years after he retired from the health service he kept up his elective practice, continuing to develop his internationally acknowledged expertise in hip and knee arthroscopy. Over time he contributed several important pioneering articles on knee surgery to the medical literature and became a constant source of advice and reassurance to his junior colleagues. Possessed of a keen sense of humour, he was said to be always ready to indulge in a spot of gossip or political intrigue. He died at the Freeman Hospital on 24 February 2018 aged 85 and was survived by his wife Susan, son Jonathan, daughter-in-law Karen and grandchildren Frederik, Eliya and Charlie.