43 Mr Schofield, orthopaedic surgeon, examined the respondent in December 2006 and January 2010. He provided two reports and three letters. His first report dated 7 December 2006 noted that, when he saw her on 4 December 2006, the respondent complained of pain in the left knee, aching in the left leg, locking of the left knee when walking long distances and occasional giving way. On examination, he found two to three centimetres lengthening of the left tibia, one centimetre wasting of the left thigh and half a centimetre wasting of the left calf. The left knee had a full range of movement and normal stability of all ligaments, but 'some pain on pressing the patella onto the femur and contracting the quadriceps muscle indicating chondromalacia'. He arranged x-rays of the left knee and lumbar spine (including erect functional views). The left knee x-ray was normal. The x-rays of the lumbar spine 'revealed evidence of disc space narrowing at the lumbosacral disc, especially in the erect view'. He concluded that apart from mild chondromalacia patellae, which may have resulted from prolonged immobilisation and the impact of the injury on the knee cap, the left knee was normal. He concluded that the 'reasons for continuing symptoms are not clear', but felt that some of the leg pain could be referred pain from the back. He recommended further MRI scans.