Lie on your back with the leg you want to exercise straight. The other knee should be bent to support your lower back. Tighten the muscle on the top of your thigh and lift to the level of your other knee. Slowly lower.
While it was originally believed that most vascular malformations are present at birth (congential), cavernous malformation lesions may develop throughout the lifetime of the affected individual. Other vascular malformations are not congenital, but are caused by trauma, radiation, or other injury to the spinal cord.
Related Information. Chiari malformations (CMs) are structural defects in the cerebellum, the part of the brain that controls balance. When the indented bony space at the lower rear of the skull is smaller than normal, the cerebellum and brain stem can be pushed downward.