Episode Four: Bones ends the series by focusing on orthopaedic surgeons Frank Dowling in Our Lady's, Crumlin, and Sean Dudeney of Dublin's Cappagh Hospital. Kerrie Leonard is 16 years old and facing an operation to straighten her spine. Paralysed from the waist down at six years of age, Kerry is bound to a wheelchair. Kerrie suffers from Scoliosis, a disease curving her spine, which if left untreated will hinder her breathing and cripple her further. Frank Dowling must weigh the risks of major spine surgery against the quality of Kerrie's life. In Cappagh, Ian Bangham from Co. Wicklow is facing knee and hip replacements. His surgeon Sean Dudeney has to plan this major surgery in detail to give Ian the best chance of regaining mobility.