the lumbosacral joint, the vertebral column transitions from the lumbar spine to the sacral spine

skin syndrome health hand white disease human diagnosis connective background woman ehlersdanlos bones tissue showing weakened female defect criteria arm person brittle ligaments brighton ligament prolotherapii isolated hypermobility caucasian laxity test marfan ehlers danlos finger rare medical ination elasticity thumb weak genetic disorder fragile ehler super elastic weakness systemic