The Journal of Bone and Joint Surgery, Vol 74, Issue 5 683-692, Copyright © 1992 by Journal of Bone and Joint Surgery, Inc
Anterior decompression and arthrodesis of the cervical spine: long-term motor improvement. Part II--Improvement in complete traumatic quadriplegia
PA Anderson and HH Bohlman
Acute Spinal Cord Injury Services, Veterans Administration Medical Center, Cleveland, Ohio.
Fifty-one patients who had complete motor quadriplegia secondary to a
fracture or dislocation of the cervical spine were managed by anterior
cervical decompression and arthrodesis with iliac bone grafts between 1973
and 1983. In all patients, myelography demonstrated that displaced
fragments of bone and disc were compressing the anterior aspect of the
spinal cord. Decompression was performed in an attempt to gain further
improvement of the motor-roots in the upper extremities and thereby to
improve the ability of the patients to care for themselves. The average
interval from the injury to the decompression was fifteen months (range,
one month to eight years). Two patients died within two months after the
operation, one had a respiratory arrest that resulted in brain damage one
day after the operation, and two died from cardiovascular disease more than
one year after the operation. The remaining forty-six patients were
followed for an average of five years (range, two to thirteen years).
Neurological improvement of at least two new functional motor-root levels
was documented in seven patients and of one level, in eighteen. Increased
motor strength by two or three grades was seen in six patients. Noteworthy
motor improvement did not occur in the remaining twenty patients. The mean
modified Barthel index (used to measure improvement in the ability to
perform activities of daily living) increased from 17 to 33 (of a possible
100) points. Functionally important improvement of the caudad part of the
cord occurred in only one patient. In one patient, neural injury, with loss
of one motor-root level, occurred, with only partial improvement. At the
latest follow-up examination, the result was poor in nine of eleven
patients who had decompression eighteen months or more after the injury.
Only two of these patients had any improvement in the Barthel index, and
then of only 5 points each. The result also was poor in the five patients
who were more than fifty-three years old; two had no improvement in the
Barthel index, one improved by 5 points, and two died.