The comparative study above also identified ring fractures in 9 of 30 live patients The long term significance of tracheal ring fractures is unknown.
12.
A 2003 American cadaveric study identified multiple tracheal ring fractures with the Ciaglia Blue Rhino technique as a complication occurring in 100 % of their small series of cases.
13.
West Thumb was created approximately 162, 000 years ago when a magma chamber bulged up under the surface of the earth and subsequently cracked it along ring fracture zones.
14.
Norris Geyser Basin is so hot and dynamic because these two faults intersect with the ring fracture zone that resulted from the creation of the Yellowstone Caldera of 640, 000 years ago.
15.
The two ignimbrite sheets making up the complex and shield erupted about 1.3 million years ago, along with several stratovolcanoes and lava domes that define a postulated 10 x 20 km ring fracture.
