Miss McMahon is a highly experienced Consultant Orthopaedic and Limb Reconstruction Surgeon who specializes in the management of fractures and children's conditions of the hip, knee, and foot. Her expertise lies in limb reconstruction, lengthening, and deformity correction. She works 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 and underwent surgical rotations at St Bartholomew's Hospital and The Royal London Hospital. She focused on children's orthopaedics, trauma, and deformity during her rotations. She then completed a National Fellowship in Children's Orthopaedics at Great Ormond Street Hospital for Children and the Royal National Orthopaedic Hospital. She went on to complete a Fellowship in Trauma and Limb Reconstruction at King's College Hospital.

Miss McMahon started 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 that were 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.