Spinal fusion: A surgical procedure in which two or more of the vertebrae in the spine are united together so that motion no longer occurs between them. Spinal fusion may be done to treat a number of conditions, including scoliosis, deformity, fracture, and disc disease. Bone grafts are usually placed around the section of the spine to be fused. The body then heals the grafts over several months, which joins the vertebrae together. The bone for the graft may be taken from another bone in the patient (autograft) or from a bone bank (allograft).
Main article: Weather in Madrid in May. The average maximum temperature in Madrid in May is 72Â°F/22Â°C and the average minimum temperature is 48Â°F/9Â°C.
Winter in Madrid is bright and sunny. Due to Madrid's high altitude of 650 metres, it experiences quite different temperatures in the summer and the winter. The most pleasant warm weather falls between May and mid July when average temperatures are between 20 and 32 degrees Celsius (68Â°F - 90Â°F).eptember is a pleasant month, with temperatures back down to around 25 degrees Celsius (77Â°F). October is also still fairly warm with an average daytime temperature of 20 degrees Celsius (68Â°F) and is still a pleasant time to visit.