n several areas routine surgery was put on hold for months, while in many others new thresholds for hip and knee replacements have been introduced.

The moves are part of the NHS drive to find £20bn efficiency savings by 2015.

The government said performance should be measured by outcomes not numbers.

Surgeons have described the delays faced by patients as “devastating and cruel”. Peter Kay, the president of the British Orthopaedic Association (BOA), says they’ve become increasingly frustrated that hip and knee replacements are being targeted as a way of finding savings.