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.
Guide to Puerto Vallarta weather in May. The average maximum daytime temperature in Puerto Vallarta in May is a hot 33Â°C (91Â°F) with very high heat & humidity. The average night-time temperature is usually a comfortable 18Â°C (64Â°F). There are usually 8 hours of bright sunshine each day, which represents 63% of the 13 hours of daylight.