Only in the last 2-3 weeks I started developing pain in the knee on
the weaker leg, which I suspected was because of uneven pressure on
due to the muscle weakness, which my doctor agreed with. Now my neurosurgeon suspected and confirmed another problem through a CT scan. I have spina befida, which apparently is a birth defect. This he suspects is causing a downward pull on my spinal cord, i.e., a tethered cord.