The orthopaedic department is facing higher demand than ever before. Consultant Chris Wilson, who has worked for the NHS for 40 years, has four back-to-back operations today. Alongside routine surgery like knee replacements, he also hopes to fit in a complex operation for 28-year-old Laura to correct her twisted leg. But just before Chris begins his first operation, an unexpected problem in theatre threatens the whole surgical list.

Catch Chris on BBC iPlayer  Saving Lives in Cardiff: Season 2