ring fracture


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ring fracture

An annular bone fracture at the base of the posterior fossa around the foramen magnum, which is accompanied by compression fractures of vertebrae and blunt trauma to soft tissue.

Mechanism
Fall or jump from heights, usually > 5 stories, onto the feet or buttocks. If the kinetic energy is not absorbed by skeletal compression, the cervical spine is forced into the skull, breaking off a rim of occipital bone or, less commonly, impacting the cranial vault.

ring fracture

Vertical deceleration injury Trauma medicine A type of blunt trauma due to jumping or falling from heights, usually > 5 stories Clinical Injury severity score is 41–predicted survival, 50%; actual survival is less; all had multiple fractures–eg, 'ring fracture' of the skull base, separating the rim of the foramen magnum from the rest of the base and compression fractures of vertebrae, both of which occur when the victim lands on his/her feet or buttocks. See Jumper syndrome.
References in periodicals archive ?
In accordance to us, Leonard T Buller et al studied the mean age of patients with a pelvic ring fracture of 64.5 years and more patients were in 6th and 7th decades.
Data including the age, sex, cause for intubation and tracheostomy, days of intubation/ventilation, APACHE II Score, duration of procedure, lowest intraprocedural SpO, lowest intraprocedural BP, intraprocedural complications such as bleeding, loss of airway for more than 20 seconds, subcutaneous emphysema, tracheal ring fracture and paratracheal placement of the tube; postprocedural complications such as accidental decannulation, pneumothorax, hemorrhage, stomal granulation, infection of stoma or a new lung infiltrate within 48hours of tracheostomy; duration of tracheostomy; planned decannulation and mortality were recorded.
Biomechanical rationale of ossification of the secondary ossification center on apophyseal bony ring fracture: a biomechanical study.
Axis ring fractures have been referred to as "hangman's fractures" due to the similarities with fractures seen in persons executed by judicial hanging.
Under these conditions there is a greater risk of failure due to inner ring fracture.
the C ring fracture toughness line overpredicts lifetime by ignoring this upsweep.
In recent reports, minimally invasive posterior screw fixations for pelvic ring fractures, including transsacral-transiliac (TSTI) and iliosacral (IS) screw fixations, have been reported to have a number of clinical and biomechanical advantages [9-13].
[9], we demonstrated the correlation of clinical follow-up and numerical simulation in three patients by showing that zones of higher stresses lead to implant failure or breakage in pelvic ring fracture osteosynthesis [9].
Ebraheim, "Biomechanical rationale of ossification of the secondary ossification center on apophyseal bony ring fracture: a biomechanical study," Clinical Biomechanics, vol.
This injury is rarely associated with pelvic ring fracture, although TDH is one of the most dangerous comorbidities of such fractures.
The Zuna Concession lays on top of the same geological phenomenon (Ring Fracture) as Los Tres Machos, a project also owned by Alto Group Holdings.
A pelvic ring fracture is a high-energy injury and should be suspected in any patient whose presenting history includes a suspicious mechanism (motor vehicle accident, crush injury, or fall from a height).