Nonoperative modalities to treat symptomatic cervical spondylosis

Improvement in Spine Pain, Functional Performance, and Quality of Life in a 26-Year-Old Male With a Failed Spine Fusion Surgery After Chiropractic BioPhysics® Structural Spinal Rehabilitation: A Case Report With a Six-Month Follow-Up

Neck pain (NP) is a leading cause of disability and can be a consequence of failed cervical spine surgeries. Articles showing successful conservative therapies after a failed surgery in the cervical spine are very rare. A 26-year-old male reported six years of worsening and disabling NP. The short-form 36-question health status questionnaire revealed a decrease in quality-of-life scores, with a physical component score (PCS) of 25.2 and a mental component score (MCS) of 29.9, compared to the normal scores of 46.8 and 52.8, respectively. Grip strength measured 36.7 kg on the left and 37.1 kg on the right (normal range: 45-52 kg). Radiography revealed cervical hypolordosis (absolute rotation angle, ARA, C2-C7) and anterior head translation (Tz C2-C7) measuring -14.6° and 20.6 mm (ideal is -42° and 0 mm). Chiropractic BioPhysics® (CBP®) (CBP Non-Profit, Inc., Eagle, ID) spinal rehabilitation sessions were administered involving Mirror Image® (CBP Non-Profit, Inc.) spinal exercises, traction, and adjustments to correct cervical spinal alignment. Following 30 treatments over nine weeks, the patient reported near-resolution of initial symptoms, discontinued pain medications, and improved quality of life. Posttreatment outcomes included the following: improvement in PCS (45.6) and MCS (37.1), normalized grip strength on the left (45.3 kg) and right (49.4 kg), and improvement in ARA C2-C7 (30.1°) and Tz C2-C7 (15.6 mm). After six months without treatment, a follow-up examination showed sustained improvements in symptoms and outcome measures, including ARA C2-C7 (30.9°) and Tz C2-C7 (10.6 mm). Failed cervical spine surgeries and persistent spine pain syndrome can occur with devastating consequences. CBP® may be an effective, conservative approach to help improve pain and disability in patients with poor surgical outcomes and abnormal spinal alignment.

Treatment strategies for cervical spondylotic myelopathy-is laminectomy alone a safe and effective option?

Background

Cervical laminectomy may be underutilized in the treatment of cervical spondylotic myelopathy (CSM) due to concerns regarding potential for post-operative instability and/or kyphosis. The purpose of this retrospective, observational study is to assess the short-term clinical and radiological outcomes as well as complications associated with a group of carefully selected patients who underwent laminectomy alone for CSM and compared them to a cohort of patients who underwent laminectomy with fusion.

Methods

Patients with CSM were identified via review of a single surgeon's cases. All patients underwent preoperative clinical evaluation, lateral flexion-extension cervical radiographs, and documentation of neck and/or extremity pain via Nurick Scale and modified Japanese Orthopedic Association (JOA) scores. Postoperative follow-up occurred at 1, 3 and 6 months for all patients. Statistical analysis was performed via Student's t-test for parametric values and Wilcoxon (Mann-Whitney) rank sum test for ordinal scores. Multi-variable linear regression was used to correct for co-variance.

Results

Forty-one patients who underwent laminectomy alone and 13 patients who underwent laminectomy with fusion were identified who met inclusion criteria. Both groups demonstrated significant improvement on Nurick and JOA scores postoperatively. Two patients in the laminectomy alone group required a subsequent one-level anterior cervical discectomy and fusion for onset of postoperative neck pain, without neurological symptoms or new deficits in the follow up period. There was no difference in rates of post-operative kyphosis between the groups.

Conclusions

In appropriately selected patients without pre-operative kyphosis or abnormal motion on flexion-extension films, cervical laminectomy remains a safe and effective treatment option.

Effects of acupuncture at myofascial trigger points combined with sling exercise therapy on clinical recovery and cervical spine biomechanics in patients with cervical spondylotic radiculopathy

OBJECTIVE

This research aimed to ascertain the effects of acupuncture at myofascial trigger points (MTrPs) in combination with sling exercise therapy (SET) on the clinical recovery and cervical spine biomechanics in patients with cervical spondylotic radiculopathy (CRS).

METHODS

Eighty patients with CSR were divided into Group A and Group B. Group A was treated with acupuncture at MTrPs, and Group B was treated with acupuncture at MTrPs combined with SET. The cervical spine function, pain level, cervical spine biomechanics and the occurrence of complications were compared between the two groups before and after treatment.

RESULTS

After treatment, the Japanese Orthopaedic Association scores, Clinical Assessment Scale for Cervical Spondylosis scores, cervical forward flexion angle, posterior extension angle, left lateral flexion angle, right lateral flexion angle, left lateral rotation angle, and right lateral rotation angle of the Group B were raised, and the Neck Disability index, Visual Analogue Scale scores, and Neck Pain Questionnaire scores were reduced versus those of the Group A. The difference in complication rates between the two groups was not of statistical significance.

CONCLUSION

Acupuncture at MTrPs combined with SET promotes functional recovery of the cervical spine, reduces pain, and improves cervical spine biomechanics in patients with CRS.

Adult cervical spine deformity: a state-of-the-art review

Adult cervical deformity is a structural malalignment of the cervical spine that may present with variety of significant symptomatology for patients. There are clear and substantial negative impacts of cervical spine deformity, including the increased burden of pain, limited mobility and functionality, and interference with patients' ability to work and perform everyday tasks. Primary cervical deformities develop as the result of a multitude of different etiologies, changing the normal mechanics and structure of the cervical region. In particular, degeneration of the cervical spine, inflammatory arthritides and neuromuscular changes are significant players in the development of disease. Additionally, cervical deformities, sometimes iatrogenically, may present secondary to malalignment or correction of the thoracic, lumbar or sacropelvic spine. Previously, classification systems were developed to help quantify disease burden and influence management of thoracic and lumbar spine deformities. Following up on these works and based on the relationship between the cervical and distal spine, Ames-ISSG developed a framework for a standardized tool for characterizing and quantifying cervical spine deformities. When surgical intervention is required to correct a cervical deformity, there are advantages and disadvantages to both anterior and posterior approaches. A stepwise approach may minimize the drawbacks of either an anterior or posterior approach alone, and patients should have a surgical plan tailored specifically to their cervical deformity based upon symptomatic and radiographic indications. This state-of-the-art review is based upon a comprehensive overview of literature seeking to highlight the normal cervical spine, etiologies of cervical deformity, current classification systems, and key surgical techniques.

Tailor-Made Surgical Strategy for Coexistent Cervical Myelopathy and Bilateral Radiculopathy. Combined Laminoplasty, Laminectomy, and Foraminotomy: Report of Two Cases

Cervical spondylosis is a common and degenerative disease consisting of myelopathy and radiculopathy. Surgical treatment can be considered for patients with cervical spondylosis resulting in severe pain, motor weakness, ambulation difficulty, and urination disorder. As myelopathy and radiculopathy often coexist, two-staged anterior and posterior fixation/decompression surgery can be selected to resolve those two pathologies. However, due to the invasiveness of that management, posterior surgery in a single session seems favorable. In this study, we present two cases of cervical spondylosis. A 67-year-old man was complaining of pain in the neck and right upper extremity. Radiographically, cervical canal stenosis was concurrently diagnosed with the foraminal stenosis of the left C3/4 and right C6/7. Laminoplasty from C3 to C6 (left open; C3 to C5, right open; C6) and foraminotomy of the left C3/4 and right C6/7 were performed in a single session. Another 43-year-old man was bothered by pain in the neck and bilateral upper extremities resulting from cervical canal stenosis and bilateral foraminal stenosis of C6/7. Laminoplasty from C3 to C5, laminectomy of C6, and foraminotomy of bilateral C6/7 were performed in a single session. Preoperative symptoms were remitted in both cases. As described in our cases, a tailor-made combination of laminoplasty, laminectomy, and foraminotomy can effectively resolve cervical spondylosis in a single session.

Blood-spinal cord barrier disruption in degenerative cervical myelopathy

Degenerative cervical myelopathy (DCM) is the most prevalent cause of spinal cord dysfunction in the aging population. Significant neurological deficits may result from a delayed diagnosis as well as inadequate neurological recovery following surgical decompression. Here, we review the pathophysiology of DCM with an emphasis on how blood-spinal cord barrier (BSCB) disruption is a critical yet neglected pathological feature affecting prognosis. In patients suffering from DCM, compromise of the BSCB is evidenced by elevated cerebrospinal fluid (CSF) to serum protein ratios and abnormal contrast-enhancement upon magnetic resonance imaging (MRI). In animal model correlates, there is histological evidence of increased extravasation of tissue dyes and serum contents, and pathological changes to the neurovascular unit. BSCB dysfunction is the likely culprit for ischemia-reperfusion injury following surgical decompression, which can result in devastating neurological sequelae. As there are currently no therapeutic approaches specifically targeting BSCB reconstitution, we conclude the review by discussing potential interventions harnessed for this purpose.

Ultrasound-guided percutaneous laser cervical discectomy for intractable hiccups: A rare case report

Background

Intractable hiccups serve no physiological purpose, but significantly reduce the quality of life. There are a variety of medications suggested for the treatment of persistent or intractable hiccups. However, it remains a great challenge for the management of intractable hiccups. In this case report, we describe the technique of percutaneous laser cervical discectomy under the sonographic guidance in treatment of intractable hiccups.

Case description

A 41-year-old male, who suffered intractable hiccups over 11 years, came to our pain department in December 2020. Neither oral medication nor phrenic nerve block achieved satisfactory relief of hiccups. Magnetic resonance imaging and computed tomography scan revealed cervical disc herniation of C4/5 and C5/6. Following selective cervical nerve root block, complete but short-term control of symptoms lasted less than 48 hours. Percutaneous laser cervical discectomy was then performed under ultrasound guidance and achieved complete and enduring symptomatic relief up to 14-month follow-up.

Conclusion

Cervical degenerative changes may be considered as potential cause for intractable hiccups, and ultrasound-guided percutaneous laser cervical discectomy may be used to treat hiccups caused by cervical discogenic etiology.

Marijuana Use and its Effect on Clinical Outcomes and Revision Rates in Patients Undergoing Anterior Cervical Discectomy and Fusion

STUDY DESIGN

A retrospective cohort study.

OBJECTIVE

To determine if (1) preoperative marijuana use increased complications, readmission, or reoperation rates following anterior cervical discectomy and fusion (ACDF), (2) identify if preoperative marijuana use resulted in worse patient-reported outcome measures (PROMs), and (3) investigate if preoperative marijuana use affects the quantity of opioid prescriptions in the perioperative period.

SUMMARY OF BACKGROUND DATA

A growing number of states have legalized recreational and/or medical marijuana, thus increasing the number of patients who report preoperative marijuana use. The effects of marijuana on clinical outcomes and PROMs in the postoperative period are unknown.

METHODS

All patients 18 years of age and older who underwent primary one- to four-level ACDF with preoperative marijuana use at our academic institution were retrospectively identified. A 3:1 propensity match was conducted to compare patients who used marijuana versus those who did not. Patient demographics, surgical characteristics, clinical outcomes, and PROMs were compared between groups. Multivariate regression models measured the effect of marijuana use on the likelihood of requiring a reoperation and whether marijuana use predicted inferior PROM improvements at the one-year postoperative period.

RESULTS

Of the 240 patients included, 60 (25.0%) used marijuana preoperatively. Multivariate logistic regression analysis identified marijuana use (odds ratio=5.62, P <0.001) as a predictor of a cervical spine reoperation after ACDF. Patients who used marijuana preoperatively had worse one-year postoperative Physical Component Scores of the Short-Form 12 (PCS-12) ( P =0.001), Neck Disability Index ( P =0.003), Visual Analogue Scale (VAS) Arm ( P =0.044) and VAS Neck ( P =0.012). Multivariate linear regression found preoperative marijuana use did not independently predict improvement in PCS-12 (β=-4.62, P =0.096), Neck Disability Index (β=9.51, P =0.062), Mental Component Scores of the Short-Form 12 (MCS-12) (β=-1.16, P =0.694), VAS Arm (β=0.06, P =0.944), or VAS Neck (β=-0.44, P =0.617).

CONCLUSION

Preoperative marijuana use increased the risk of a cervical spine reoperation after ACDF, but it did not significantly change the amount of postoperative opioids used or the magnitude of improvement in PROMs.

LEVEL OF EVIDENCE

Levwl III.

Return-to-Work Status Following One- and Two-Level Anterior Cervical Discectomy and Fusions: A Prospective Cohort Study

Background: The purpose of this article was to determine the rate of return to work (RTW) and contributing factors after a one- and two-level anterior cervical discectomy and fusion (ACDF), a common spine surgery. Recognizing the contributing factors to RTW of occupationally active patients is important.

Methodology: In this study, 68 patients were examined at three, six, and nine months after ACDF by the same team and same spinal surgeon at a single medical center, and the rate of RTW and contributing factors were determined. In this study, relationships were analyzed by the logistic regression method.

Results: The results of this study demonstrated that 77.9%, 82.4%, and 82.4% of workers had returned to work after three, six, and nine months, respectively. At nine months, 82.4% of the patients had returned to work, 19.6% returned to part-time work, and 80.4% had returned to their previous work. Conversely, 17.6% of the patients had not returned to work after nine months. In the logistic regression analysis, older age, longer absence from work before surgery, and less employer support were the related factors for no RTW.

Conclusions: Per the results, it may be concluded that nearly 82% of patients with ACDF had returned to work after nine months of follow-up. Lack of RTW is affected by older age, longer absence from work before surgery, and employer support. Planning according to these variables can reduce the burden of the problem.

The Effects of Massage Therapy on a Patient with Migraines and Cervical Spondylosis: a Case Report

Background

Migraines involve moderate-to-severe neck and face pain that lasts four to 72 hours, and are followed by fatigue and stiffness. Migraines are treated using medications, massage therapy (MT), and non-pharmacological alternatives. Cervical spondylosis (CS) is characterized by degeneration of the intervertebral discs, neck pain, and involvement of soft tissues in the cervical area. CS is treated using medications and manual therapy, including MT.

Objective

To determine the effects of MT on cervical range of motion and daily function in a patient with migraines and CS.

Case Presentation

The patient was an active 56-year-old female diagnosed with migraines and CS. Initial evaluation included cervical range of motion (ROM), goniometry, reflexes, myotomes, dermatomes, local sensation testing and orthopedic tests. Assessment was followed by five MT treatments. Swedish massage, myofascial trigger point release, and proprioceptive neuromuscular facilitation (PNF) stretching were applied to the back, neck, head, and face. The Headache Disability Index (HDI) was administered on the initial and final visits to evaluate patient function. Cervical ROM was measured pre- and posttreatment using a universal goniometer. Treatment was conducted by a second-year MT student at the MacEwan Massage Therapy Teaching Clinic in Edmonton, Alberta.

Results

All cervical ranges of motion improved. The Headache Disability Index score decreased, but was not considered significant. The patient reported decreased stiffness in the upper back and shoulders, reduced migraines, and better sleeping patterns after the MT intervention.

Conclusion

MT was effective in increasing cervical ROM, but had no significant effect on daily function. Further research is warranted on effects of MT on CS and migraines.

Effect of selected group of asana when used as an adjunct in management of cervical spondylosis of mild to moderate severity: An observational study

BACKGROUND

"Cervical spondylosis" (CS) is a collective term used for non-specific neck pain post 30 age group. Management of CS is mainly non-surgical, particularly in mild to moderate severity that includes the oral anti-inflammatory drugs, exercises, manipulation, mobilization, or combination of these.

OBJECTIVE

The objective of the study is to assess the possible benefit of a selected group of asana in a group of patients over a short time frame and assess their functional outcome.

MATERIALS AND METHODS

An observational study of cohort of patients having mild to moderate CS, who visited the AYUSH department between May 2016 and November 2016 were included. "Selected group of Asana (SGOA)" was practiced for 30 min supervised and then home-based for a period of 8 weeks with usual standard treatment. Patients followed up fortnightly, and their degree of severity & disability assessed.

RESULTS

Thirty patients with 19 males and 11 females having ages mean ± SD 45.61 ± 8.3 and 44.18 ± 9.78 having NDI score of mean ± SD 17.83 ± 4.749 at baseline (0 weeks) were included. Patients showed an improvement in NDI score to finally 7.40 ± 3.180, p-value = 0.0001. This improvement was also noted at various time intervals (p-value = 0.0001 each time), as seen in the post hoc analysis.

CONCLUSION

Yogic practices "Specific Group of Asana" done for eight weeks on a home-based program could be useful in reducing pain and disability in people suffering from CS of mild to a moderate degree. However, more extensive, comparative, and multi-centric trials are required for establishing this as a treatment modality.

Rare Neurosurgical Complications of Epidural Injections: An 8-Yr Single-Institution Experience

BACKGROUND

Neurosurgical complications from epidural injections have rarely been reported.

OBJECTIVE

To define the spectrum of complications from these procedures in order to identify risk factors and strategies for prevention.

METHODS

A prospectively maintained database of 14 247 neurosurgical admissions over 8 yr was screened to identify patients who had suffered procedural complications associated with 1182 cervical and 4617 lumbar interlaminar epidural injection procedures performed at a single institution. Patients who developed new neurological symptoms or deficits were included. A retrospective analysis of demographic and procedural features was performed.

RESULTS

Thirteen patients experienced complications requiring neurosurgical treatment, accounting for an overall procedural complication rate of 0.22% (0.51% and 0.15% for cervical and lumbar injections, respectively), and representing 0.09% of all neurosurgical admissions over 8 yr. There were 3 categories: hemorrhage (n = 7), infection (n = 3), and inadvertent dural penetration (n = 3). There was significant association with anticoagulation use among patients with hemorrhagic vs nonhemorrhagic complications ( P < .01, Fisher's exact test). Six patients who developed epidural hematoma had been managed in accordance with current guidelines, either after prolonged cessation of anticoagulation (n = 3) or taking only aspirin (n = 3); all were decompressed promptly with good long-term outcome. All infections were associated with lumbar injection. Dural penetration resulted in diffuse pneumocephalus (n = 1), intramedullary air at the site of injection (n = 1), and acutely symptomatic colloid cyst (n = 1).

CONCLUSION

A majority of neurosurgical complications from epidural injections are hemorrhagic and associated with anticoagulation, although infection and inadvertent dural penetration also occur. Prompt treatment of compressive lesions is associated with good outcome.

Features of Neck Pain and its Related Factors Among Patients With Cervical Spondylosis

Background and aims: The prevalence of cervical spondylosis is rising. The objective of this study was to figure out the various features and their related factors among cervical spondylosis patients in Dhaka, Bangladesh. Methods: A descriptive cross-sectional study was conducted enrolling 40 patients from NITOR (National Institute of Traumatology and Orthopedic Rehabilitation) in Dhaka, Bangladesh. Data were collected from the physiotherapy department of NITOR using convenient sampling technique. A structured questionnaire was used for data collection. Patients who were diagnosed with cervical spondylosis were included in this study. Data were analyzed using SPSS version 22.0. Descriptive analysis was done using frequency measures, mean and percentages. Results: Among our respondents, the majority of them were female (62.5%). Majority of the participants were in the age group of 35 to 50 years (62.5%). Many of them were urban population engaged in service or housewives. Stressful job (55%), duration of working hour >8 hours (62.5%) were the most common characteristics among patients. The main location of pain was in the shoulder (82.5%) followed by the neck (77.4%) and forearm (70%). Most patients had intermittent pain (57.5%), numbness (55%), tingling sensation (47.5%) and paresthesia (42.5%). Moderate type of pain (65%), the involvement of both upper limbs (35%) and radiating pain to shoulder (72.5%) were the most reported features by patients. No response to medication was also observed. Conclusion: Being female, middle age group, stressful occupation, location and radiation of pain to shoulder are some of the common features revealed in this study. The findings will help the practitioner to plan their treatment goals and techniques considering the characteristics of patients.

Vitamin D and ferritin correlation with chronic neck pain using standard statistics and a novel artificial neural network prediction model

AIM

Despite the high prevalence of chronic neck pain, there is limited consensus about the primary etiology, risk factors, diagnostic criteria and therapeutic outcome. Here, we aimed to determine if Ferritin and Vitamin D are modifiable risk factors with chronic neck pain using slandered statistics and artificial intelligence neural network (ANN).

METHODS

Fifty-four patients with chronic neck pain treated between February 2016 and August 2016 in King Abdullah University Hospital and 54 patients age matched controls undergoing outpatient or minor procedures were enrolled. Patients and control demographic parameters, height, weight and single measurement of serum vitamin D, Vitamin B12, ferritin, calcium, phosphorus, zinc were obtained. An ANN prediction model was developed.

RESULTS

The statistical analysis reveals that patients with chronic neck pain have significantly lower serum Vitamin D and Ferritin (p-value <.05). 90% of patients with chronic neck pain were females. Multilayer Feed Forward Neural Network with Back Propagation(MFFNN) prediction model were developed and designed based on vitamin D and ferritin as input variables and CNP as output. The ANN model output results show that, 92 out of 108 samples were correctly classified with 85% classification accuracy.

CONCLUSIONS

Although Iron and vitamin D deficiency cannot be isolated as the sole risk factors of chronic neck pain, they should be considered as two modifiable risk. The high prevalence of chronic neck pain, hypovitaminosis D and low ferritin amongst women is of concern. Bioinformatics predictions with artificial neural network can be of future benefit in classification and prediction models for chronic neck pain. We hope this initial work will encourage a future larger cohort study addressing vitamin D and iron correction as modifiable factors and the application of artificial intelligence models in clinical practice.

Two-Year Results of the Prospective Spine Treatment Outcomes Study: An Analysis of Complication Rates, Predictors of Their Development, and Effect on Patient Derived Outcomes at 2 Years for Surgical Management of Cervical Spondylotic Myelopathy

OBJECTIVES

To investigate the baseline patient characteristics, nonoperative modalities, surgical procedures, and complications rates of surgical cervical spondylotic myelopathy (CSM) patients. To evaluate risk factors for developing complications and compare the changes in health-related quality of life (HRQOL) from baseline to 2 years postoperatively.

METHODS

A retrospective review was performed on a prospectively collected database of CSM patients. Baseline patient demographic data, comorbidities, clinical information, nonoperative treatment modalities, surgical procedures, and complication rates were collected. HRQOL outcomes were assessed using the Short Form 36 (SF-36) Physical Score Component (PCS) and Mental Score Component (MCS) and the Neck Disability Index (NDI) at baseline and 2 years postoperatively. Statistical analyses included paired-sample t tests and multivariate logistic regression controlling for age, sex, and body mass index (BMI).

RESULTS

A total of 203 surgical CSM patients were identified (43% female). Average age was 57.7 years and average BMI was 29.6 kg/m². Before surgical intervention, patients underwent various nonoperative treatment modalities, most commonly nonsteroidal anti-inflammatory drugs (34%), analgesics (32%), and physical therapy (26%). The overall rate of complications was 7.4%. Complications included cerebrospinal fluid leak (2.5%), postoperative radiculopathy (1.0%), and excessive bleeding (1.0%). A previous history of cervical spine surgery was the sole significant risk factor for developing a complication (odds ratio, 9.22; P = 0.034). Average HRQOL scores improved significantly from baseline to 2 years postsurgery.

CONCLUSIONS

The overall complication rate was 7.4% for the cohort. Baseline clinical information, comorbidities, use of nonoperative treatment modalities, and procedure type were not significantly associated with an increased risk of complications. Previous cervical spine surgery increased the risk of complications by 9-fold. The patients showed significantly improved SF-36 PCS, SF-36 MCS, and NDI scores at 2 years after surgery.

Cervical spondylotic myelopathy: National trends in the treatment and peri-operative outcomes over 10years

BACKGROUND

Recent studies show increases in cervical spine surgery prevalence and cervical spondylotic myelopathy (CSM) diagnoses in the US. However, few studies have examined outcomes for CSM surgical management, particularly on a nationwide scale.

OBJECTIVE

Evaluate national trends from 2001 to 2010 for CSM patient surgical approach, postoperative outcomes, and hospital characteristics.

METHODS

A retrospective nationwide database analysis provided by the Nationwide Inpatient Sample (NIS) including CSM patients aged 25+ who underwent anterior and/or posterior cervical fusion or laminoplasty from 2001 to 2010. Patients with fractures, 9+ levels fused, or any cancer were excluded. Measures included demographics, hospital data, and procedure-related complications. Yearly trends were analyzed using linear regression modeling.

RESULTS

54,348 discharge cases were identified. ACDF, posterior only, and combined anterior/posterior approach volumes significantly increased from 2001 to 2010 (98.62%, 303.07%, and 576.19%; respectively, p<0.05). However, laminoplasty volume remained unchanged (p>0.05). Total charges for ACDF, posterior only, combined anterior/posterior, and laminoplasty approaches all significantly increased (138.72%, 176.74%, 182.48%, and 144.85%, respectively; p<0.05). For all procedures, overall mortality significantly decreased by 45.34% (p=0.001) and overall morbidity increased by 33.82% (p=0.0002). For all procedures except ACDF, which saw a significantly decrease by 8.75% (p<0.0001), length of hospital stay was unchanged.

CONCLUSIONS

For CSM patients between 2001 and 2010, combined surgical approach increased sixfold, posterior only approach increased threefold, and ACDF doubled; laminoplasties without fusion volume remained the same. Mortality decreased whereas morbidity and total charges increased. Length of stay decreased only for ACDF approach. This study provides clinically useful data to direct future research, improving patient outcomes.

Comparison of zero-profile anchored spacer versus plate-cage construct in treatment of cervical spondylosis with regard to clinical outcomes and incidence of major complications: a meta-analysis

Purpose

Meta-analysis was conducted to evaluate whether zero-profile anchored spacer (Zero-P) could reduce complication rates, while maintaining similar clinical outcomes compared to plate-cage construct (PCC) in the treatment of cervical spondylosis.

Methods

All prospective and retrospective comparative studies published up to May 2015 that compared the clinical outcomes of Zero-P versus PCC in the treatment of cervical spondylosis were acquired by a comprehensive search in PubMed and EMBASE. Exclusion criteria were non-English studies, noncomparative studies, hybrid surgeries, revision surgeries, and surgeries with less than a 12-month follow-up period. The main end points including Japanese Orthopedic Association (JOA) and Neck Disability Index (NDI) scores, cervical lordosis, fusion rate, subsidence, and dysphagia were analyzed. All studies were analyzed with the RevMan 5.2.0 software. Publication biases of main results were examined using Stata 12.0.

Results

A total of 12 studies were included in the meta-analysis. No statistical difference was observed with regard to preoperative or postoperative JOA and NDI scores, cervical lordosis, and fusion rate. The Zero-P group had a higher subsidence rate than the PCC group (P<0.05, risk difference =0.13, 95% confidence interval [CI] 0.00–0.26). However, the Zero-P group had a significantly lower postoperative dysphagia rate than the PCC group within the first 2 weeks (P<0.05, odds ratio [OR] =0.64, 95% CI 0.45–0.91), at the 6th month [P<0.05, OR =0.20, 95% CI 0.04–0.90], and at the final follow-up time [P<0.05, OR =0.13, 95% CI 0.04–0.45].

Conclusion

Our meta-analysis suggested that surgical treatments of single or multiple levels of cervical spondylosis using Zero-P and PCC were similar in terms of JOA score, NDI score, cervical lordosis, and fusion rate. Although the Zero-P group had a higher subsidence rate than the PCC group, Zero-P had a lower postoperative dysphagia rate and might have a lower adjacent-level ossification rate.