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.
The summer and winter temperatures are quite different. The weather between the months May and July is very pleasant and warm having an average temperature between 20 and 32 Â°C. At the end of the month July and throughout August the temperature becomes very hot and sometimes it reaches upto 40 Â°C.However, the temperature is tolerable as the humidity remains low.he lowest average temperature stands at 2 ÂºC while the highest average at 9 ÂºC during December and January. Spring. Spring in Madrid comes as the consequent of winter, which brings a more relaxed weather for the tourists. The sun begins to stay for longer time and shine Madrid from more than 7 hours each day.