Analysis of progression of cervical OPLL using computerized tomography: typical sign of maturation of OPLL mass

Choi, Byung Wan; Baek, Dong Hoon; Sheffler, Lindsey C.; Chang, Han

doi:10.3171/2015.1.spine131167

Cited by 16 publications

(14 citation statements)

References 10 publications

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“…Given the possibility that further OPLL growth may be related to cervical motion and biomechanical stress, several studies have investigated whether OPLL continues to progress after anterior or posterior decompression and fusion surgery. Table 1 summarizes several of these studies with respect to postoperative OPLL growth rates [8,18,19,37,38,41-45].…”

Section: Opll Growth and Fusion Surgerymentioning

confidence: 99%

“…In contrast to these studies, Choi et al [41] retrospectively evaluated 60 cervical OPLL patients with greater than 24-month follow-up (average, 29.6 months) with preoperative and postoperative CT scans. Criteria for progression was at least 2-mm growth horizontally or longitudinally during the follow-up period.…”

Section: Opll Growth and Fusion Surgerymentioning

confidence: 99%

“…Patients were controlled for surgical approach (anterior vs. posterior and fusion vs. nonfusion). No statistically significant difference in OPLL progression was found between cohorts, albeit with a relatively small overall study population [41].…”

Section: Opll Growth and Fusion Surgerymentioning

confidence: 99%

See 2 more Smart Citations

Does Ossification of the Posterior Longitudinal Ligament Progress After Fusion?

et al. 2019

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Starting in the 1960s, ossification of the posterior longitudinal ligament (OPLL) became more commonly diagnosed in Japan. The disease is characterized by a gradual increase in calcification of the posterior longitudinal ligament with the eventual sequelae of cervical canal stenosis and myelopathy. Surgical interventions to relieve stenosis and neurologic symptoms are performed to decompress the cervical canal. Studies demonstrate continued ossification of the OPLL in both nonsurgical and surgically treated patients. In this review, the authors evaluate the epidemiology, pathophysiology, and literature regarding disease progression in OPLL after cervical fusion.

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Section: Opll Growth and Fusion Surgerymentioning

confidence: 99%

Section: Opll Growth and Fusion Surgerymentioning

confidence: 99%

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Does Ossification of the Posterior Longitudinal Ligament Progress After Fusion?

et al. 2019

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“…The progression of the OPLL mass on the CT scans was compared between the immediate postoperative CT scan and the latest CT scan. We evaluated “height” and “thickness” of OPLL by measuring the mass size horizontally in the thickest area from the vertebral body to the OPLL mass on the axial plane, and longitudinally based on the longest distance between the proximal and distal margins of the OPLL mass on the sagittal plane, respectively36) (FIGURE 3). The OPLL mass was distinguished from osteophyte that forms along the margin of the intervertebral space.…”

Section: Methodsmentioning

confidence: 99%

Progression of Ossification of the Posterior Longitudinal Ligament after Cervical Total Disc Replacement

Ham

Kim

Yoon

et al. 2019

Korean J Neurotrauma

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ObjectiveTotal disc replacement (TDR) is frequently performed anterior approaching method for the patients diagnosed with cervical disc herniation. This study aimed to assess the degree of ossification of the posterior longitudinal ligament (OPLL) progression after cervical TDR.MethodsTwenty-two male soldiers who underwent cervical TDR surgery from 2009 to 2016 and were followed-up for more than 12 months were enrolled. The enrolled patients were classified as; 1) patients with pre-existing OPLL and without; and 2) patient showing progression of OPLL or not.ResultsTwenty-two men were included in the analysis. The mean follow-up period from the surgery was 41.4 months (range, 12–114 months). The mean age of all patients was 40.7 years (range, 31–52 years). TDR-only was used in 7 cases, and the hybrid surgery (TDR+ACDF) was used in 15 cases. The incidence of progression or newly development of OPLL was significantly higher in pre-existing OPLL group (p=0.01). In 11 cases showing the progression of the OPLL, the mean size of OPLL progression was 4.16 mm (range, 0.34–18.87 mm) in the longitudinal height and 1.57 mm (range, 0.54–3.91 mm) in thickness.ConclusionThe progression of OPLL after cervical TDR was more frequent in patients with pre-existing OPLL than in patients without OPLL. Even though TDR is a major alternative to the treatment of cervical lesions to preserve vertebral segmental motion, careful attention should be paid to whether TDR should be used in patients with OPLL and this should be fully explained to the patient.

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“… 5 Also, it has been used effectively to assess for OPLL progression and for preoperative planning. 6 Although the use of CT myelography has considerably declined in recent years, this invasive procedure is still commonly used in selected cases where MRI is technically difficult or contraindicated. 7 , 8 Common MRI contraindications include patients with intracranial aneurysm clips, cardiac pacemakers, or implantable cardioverter defibrillators.…”

Section: Introductionmentioning

confidence: 99%

Preoperative Computed Tomography Myelography Parameters as Predictors of Outcome in Patients With Degenerative Cervical Myelopathy: Results of a Systematic Review

Waly

Abduljabbar

Fortin

et al. 2017

Global Spine Journal

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Study Design:Systematic review.Objectives:To determine the preoperative computed tomography (CT) myelogram imaging parameters in patients diagnosed with degenerative cervical myelopathy (DCM) that correlate with severity of DCM and predict postoperative patients’ functional outcome.Methods:An electronic database search was performed using Ovid Medline and Embase. CT myelogram studies investigating the correlation between imaging characteristics and DCM severity or postoperative outcomes were included. Two independent reviewers performed citation screening, selection, qualitative assessment, and data extraction using an objective and blinded protocol.Results:A total of 5 studies (402 patients) were included in this review and investigated the role of preoperative CT myelogram parameters in predicting the functional outcome after surgical treatment of DCM. All studies were retrospective cohort studies. CT myelogram characteristics included the transverse area of the spinal cord at maximum level of compression, spinal canal narrowing, number of blocks, spinal canal diameter, and flattening ratio. There is low evidence suggesting that patients with a preoperative transverse area of the spinal cord >30 mm2 at the level of maximum compression have better postoperative recovery and outcome. We found no studies investigating the correlation between preoperative CT myelogram parameters and DCM severity.Conclusions:Patients with greater transverse area of spinal cord at the level of maximum compression on the preoperative CT myelogram are more likely to have better neurological outcome after surgery. There is insufficient evidence to suggest that any of the other CT myelogram parameters investigated are predictors of postoperative outcomes in patients with DCM.

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Analysis of progression of cervical OPLL using computerized tomography: typical sign of maturation of OPLL mass

Cited by 16 publications

References 10 publications

Does Ossification of the Posterior Longitudinal Ligament Progress After Fusion?

Does Ossification of the Posterior Longitudinal Ligament Progress After Fusion?

Progression of Ossification of the Posterior Longitudinal Ligament after Cervical Total Disc Replacement

Preoperative Computed Tomography Myelography Parameters as Predictors of Outcome in Patients With Degenerative Cervical Myelopathy: Results of a Systematic Review

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