Miss McMahon is a highly experienced consultant orthopaedic and limb reconstruction surgeon, specialising in the management of fractures and children's conditions of the hip, knee, and foot. Her expertise includes limb reconstruction, lengthening, and deformity correction. She is currently practising at the Children's Orthopaedic practice at The Portland Hospital in London, where she collaborates with Mr. Robert Hill and Mr. Jonathan Wright.

Miss McMahon completed her medical training at UCL Medical School in 2003. She then underwent surgical rotations at St Bartholomew's Hospital and The Royal London Hospital, focusing on children's orthopaedics, trauma, and deformity. Following this, she completed a National Fellowship in Children's Orthopaedics at Great Ormond Street Hospital for Children and the Royal National Orthopaedic Hospital. She further honed her skills with a Fellowship in Trauma and Limb Reconstruction at King's College Hospital.

Miss McMahon began her consultant career at the Royal Free Hospital before joining Great Ormond Street Hospital for Children as a consultant. Her passion lies in guiding children and their families towards bespoke solutions for problems present at birth or developed due to an accident or infection. Her goal is to provide her patients with the best possible outcome and improve their quality of life.

Miss McMahon's areas of expertise include limb reconstruction, lengthening, and deformity correction. She is dedicated to treating conditions such as fractures, congenital deformities, and post-traumatic complications. Her commitment to her patients and her extensive training make her a leading specialist in her field.