geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Intraoperative ultrasonographic evaluation of posterior decompression via laminoplasty in patients with cervical ossification of the posterior longitudinal ligament: correlation with 2-year follow-up results


, : Intraoperative ultrasonographic evaluation of posterior decompression via laminoplasty in patients with cervical ossification of the posterior longitudinal ligament: correlation with 2-year follow-up results. Journal of Neurosurgery. Spine 13(1): 47-51

OBJECT The aim in this prospective study was to determine the morphological limitations of laminoplasty for cervical ossification of the posterior longitudinal ligament (OPLL) by using intraoperative ultrasonography and to investigate correlations between ultrasonographic findings and 2-year follow-up results. METHODS Included in this study were 40 patients who underwent double-door laminoplasty for cervical myelopathy due to OPLL. Intraoperative ultrasonography was used to evaluate posterior shift of the spinal cord after the posterior decompression procedure. To determine the decompression status of the cord, the authors classified ultrasonographic findings into 3 types on the basis of the presence or absence of spinal cord contact with OPLL after decompression: Type 1, noncontact; Type 2, contact and apart; and Type 3, contact. Patients were divided accordingly into Group 1, showing Type 1 or 2 findings, representing sufficient decompression; and Group 2, showing Type 3 findings with insufficient decompression. Preoperative sagittal alignment of the cervical spine (C2-7 angle) and preoperative maximal thickness of OPLL were compared between groups. The authors also investigated the morphological limitations of laminoplasty and 2-year follow-up results by using the Japanese Orthopedic Association (JOA) scoring system. RESULTS According to receiver operating characteristic curve analysis, an OPLL maximal thickness > 7.2 mm was a cutoff value for insufficient decompression. However, sufficient or insufficient decompression did not correlate with 2-year results, as determined by JOA scores. The C2-7 angle had no impact on ultrasonographic findings. CONCLUSIONS Laminoplasty has a morphological limitation for thick OPLLs, and a thickness > 7.2 mm represents a theoretical cutoff for residual cord compression after laminoplasty. According to 2-year results, however, laminoplasty can remain the first choice for any type of multiple-level OPLL.

US$19.90

PMID: 20594017

DOI: 10.3171/2010.3.SPINE09680


Other references

Lamparczyk H.; Radecki A.; Kaliszan R., 1981: Application of a geometric parameter defining molecular shape for the quantitation of interaction of poly cyclic aromatic hydro carbons with enzyme systems. Quantitative relationships between the ability of polycyclic aromatic hydrocarbons to induce and repress various enzyme systems and a geometric parameter expressing their molecular shape were described. In contrast, no statistically significant re...

Watanapa P.; Vathanophas V., 1988: Secondary aorto colonic fistula a rare complication of abdominal aortic surgery. Thai Journal of Surgery 9(4): 86-88

Yokoyama, A.; Maruiwa, F.; Hayakawa, M.; Kanai, A.; Vervoort, R.; Wright, A.F.; Yamada, K.; Niikawa, N.; Naoi, N., 2001: Three novel mutations of the RPGR gene exon ORF15 in three Japanese families with X-linked retinitis pigmentosa. We describe three new mutations in a recently identified exon, ORF15, of the retinitis pigmentosa GTPase regulator gene (RPGR) in three unrelated Japanese families (Families 1-3) with X-linked retinitis pigmentosa (XLRP). The affected males had ty...

Nagano, M.; Mochizuki, F.; Choman, A.; Yuki, T.; Ishida, K., 1994: Multicentric superficial minute esophageal cancers with foci of atypical squamous epithelium, report of a case. The patient, a 68-year-old man, was admitted to our hospital for a yearly endoscopic examination. Endoscopic examination showed superficial irregular redness of esophageal mucosa which was clearly unstained by iodine. And also revealed scattered u...

Ruiz Castaneda, M., 1976: Surface fixation test for the diagnosis of invasive amebiasis. The surface fixation test was adapted for the diagnosis of invasive amoebiasis. Antigens were retained on strips of filter paper despite washing and were visualized by staining when specific antibodies were present in the serum tested.

Nigg, B.M.; Khan, A.; Fisher, V.; Stefanyshyn, D., 1998: Effect of shoe insert construction on foot and leg movement. Purpose: The purpose of this study was to quantify changes in foot eversion and tibial rotation during running resulting from systematic changes of material composition of five shoe inserts of the same shape. Methods: Tests were performed with 12...

Cakar, J.; Parić, A.; Vidic, D.; Haverić, A.; Haverić, S.; Maksimović, M.; Bajrović, K., 2012: Antioxidant and antiproliferative activities of Helleborus odorus Waldst. & Kit, H. multifidus Vis. and H. hercegovinus Martinis. This study was undertaken in order to evaluate possible antioxidative and antiproliferative activities of three Helleborus taxa. The dry leaves and roots of three Helleborus taxa were extracted with ethanol and water. A phytochemical evaluation of...

Soulie, Pierre, 1963: Indications, contra-indications and incidents of angiocardiography. The general contraindications are the same for all arteriography: allergy, renal insufficiency. The precautions are simple: one should not forget to carefully verify an endovascular allergy because there is a possibility that a skin, mucous membra...

Haghighi, F.Sadat.; Rahmanian, M.; Namiranian, N.; Arzaghi, S.Masoud.; Dehghan, F.; Chavoshzade, F.; Sepehri, F., 2015: Migraine and type 2 diabetes; is there any association?. Migraine headache prevalence and triggers in type2 diabetes mellitus (T2DM) were investigated in previous studies but the results are contradictory. Therefore, in this study we examined the prevalence of migraine headache in diabetic patients in c...

Crawford R.; Littlefair R.W.; Afflect L.G., 1991: The Arbroath and Montrose fields, blocks 22/ 17, 18, UK North Sea. Memoir - Geological Society of London 14: 211-217