Peter Alexander Ring was a consultant orthopaedic surgeon of international repute who worked at Redhill General Hospital. He was born in Finchley, Middlesex, on 30 December 1922. His father, John Richard Ring, was a shop manager. His mother was Caroline née Matthews. Peter went to school at Christ's College, Finchley and on to University College Hospital, London. He qualified in 1945 with the Alexander Bruce medal for surgery and pathology. He did a house surgeon post at University College Hospital and registrar training at the Royal National Orthopaedic Hospital. He continued his registrar training at Guy's Hospital, where he began his interest in the surgical management of osteoarthritis of the hip under John Stanley Batchelor, reporting the results of the unit's hip operations prior to artificial replacement in 1960. He then returned to University College Hospital as a senior registrar. Between 1956 and 1959, he was the Laming Evans senior research fellow at the Royal College of Surgeons. He became a consultant in 1960, establishing the orthopaedic and accident unit at the Redhill General Hospital. During the 1960's, he was one of the pioneers of total hip replacement, along with John Charnley and Ken McKee. He favoured an un-cemented design with a conical countersunk acetabular component with a long screw held in the iliopubic bar linked to a modified Austin Moore femoral stem. These he developed in what became a long and fruitful relationship with Maurice Down of Down Brothers. Later models had an all-polyethylene acetabular component. He found these had a higher failure rate from wear than the original metal-on-metal articulations. From 1968, he published extensively on the results and complications of un-cemented total hip arthroplasty. He also developed his own un-cemented knee replacement with a titanium femoral shell, screw-fixed tibial plate and polyethylene insert. He published his results. As with other early designs, it did not have a trochlear flange for the patella. In the late 1980's and early 1990's, he withdrew gradually from clinical practice, but maintained his lifelong interest in orthopaedics. He died on 16 March 2018, peacefully, at the age of 95. He had four children by his first wife, Stella, who predeceased him. He was survived by them, and by his second wife, Sheila, and by four grandchildren and five great grandchildren. Their golden wedding anniversary would have fallen later in the year.