Open AccessSpinous Process-Splitting Laminoplasty Using Hydroxyapatite Spinous Process Spacer
Author(s) -
Keisuke Nakano,
Seiko Harata,
Futoshi Suetsuna,
Tokuichi Araki,
Junji Itoh
Publication year - 1992
Publication title -
spine (philadelphia, pa. 1976)/spine
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.657
H-Index - 254
eISSN - 1528-1159
pISSN - 0362-2436
DOI - 10.1097/00007632-199203001-00009
Subject(s) - medicine , spinous process , laminoplasty , myelopathy , spinal canal , sagittal plane , cervical vertebrae , spondylolysis , cervical canal , computed tomography , anatomy , surgery , spinal cord , spondylolisthesis , lumbar , cervix , cancer , psychiatry
Between February 1986 and August 1989, 45 patients with cervical myelopathy were treated by spinous process-splitting laminoplasty. Hydroxyapatite intraspinous spacers were used to maintain the enlargement of the cervical spinal canal. The shape of this spacer is trapezoidal. After sagittal splitting of the spinous process, the spacer was inserted between the two halves and affixed with the wire. Histologic study showed there was good fusion between the spacer and bone. In all cases, good enlargement of the cervical spinal canal was achieved. Spacer displacement, wire breakage, and postoperative infection were not seen. There was no postoperative neurologic deterioration. Computed tomography showed that the width of the cervical spinal canal was maintained.