Characteristics of lumbar scoliosis in patients with rheumatoid arthritis

Relationship between inflammatory laboratory parameters and severity of adolescent idiopathic scoliosis: A pilot study

BACKGROUND

Adolescent idiopathic scoliosis is a complex condition whose pathogenesis may include inflammation and signs of joint and bone degeneration.

OBJECTIVE

The main objective of this study is to evaluate the relationship between the severity of adolescent idiopathic scoliosis and inflammatory blood parameters.

METHODS

The study recruited patients with adolescent idiopathic scoliosis who attended the Rehabilitation Center of the Apostolo Foundation in Merate (LC). The scoliosis curve (Cobb's angle) was used as a severity index to compare with inflammatory blood parameters (white blood cells subpopulations, immunoglobulins, protein electrophoresis). In addition, the study used an overall severity grading called "Scoliosis Score" which includes all spine angles and Risser's score (bone development index).

RESULTS

Thirty-four subjects were recruited (mean age 14 years, 2 months), 30 females and 2 males. A significant correlation was found between Cobb's angle and the percentage values of beta-2 globulins in a directly proportional manner (r= 0.42, p= 0.01), and gamma globulins in an inversely proportional manner (r=-0.366, p= 0.04). However, no significant correlation between Cobb's angle and the absolute values of white blood cells and percentage subpopulations was found (r= 0.0821 p= 0.655). A moderate, inverse correlation was found between the Scoliosis Score and the percentage of neutrophils (r=-0.385, p= 0.02), a direct correlation was found between the Scoliosis Score and the percentage of lymphocytes (r= 0.404, p= 0.02). In addition, there was a strong correlation of the Scoliosis Score with alpha-2 globulin (r= 0.564, p= 0.0012), beta-1 globulin (r= 0.478, p= 0.0074), and beta-2 globulin (r= 0.370, p= 0.044) and an inverse relationship with gamma globulin (r=-0.625, p= 0.0002). The main correlations were confirmed by regression analysis.

CONCLUSION

The correlation between beta-2 globulins and gamma globulins with Cobb's angle and the Scoliosis Score suggests a link between spinal curvature and inflammation in scoliosis patients, This link may indicate the significance of these parameters for diagnosing, staging the disease, and monitoring therapies.

Conservative Management of Low Back Pain and Scoliosis in a Patient With Rheumatoid Arthritis: Eight Years Follow-Up

Scoliosis in patients with rheumatoid arthritis (RA) can cause significant pain and disability. RA has been extensively studied in relation to the cervical spine, yet the pathology of the thoracic and lumbar spine in RA patients has been largely overlooked. A 66-year-old woman, with longstanding RA and severe scoliosis, presented to the chiropractic clinic with a five-month history of exacerbated low back pain radiating to the right lower limb. The patient was treated with a combination of full-spine mechanical spinal distraction, spinal manipulative therapy, mechanical distraction of the cervical spine, and soft tissue treatment (scraping therapy). Thereafter, the patient recovered from the pain and radiculopathy and showed improvements in the radiological parameters, walking gait, and postural balance. Radiography was performed at the 12-month, four-year, and eight-year follow-up appointments and revealed improvements in symptoms, posture, and scoliosis. Although the treatment for RA-related scoliosis is similar to that for other types of scoliosis, due to the nature of RA, treatment should be tailored to individual patients. This case report highlights the importance of considering chiropractic therapy for the management of lumbar scoliosis in patients with RA, as a comprehensive treatment plan resulted in improved spinal balance, mobility, gait, posture, and quality of life.

Radiological and clinical comparisons of the patients with rheumatoid arthritis operated with rigid and dynamic instrumentation systems due to lumbar degenerative spinal diseases

BACKGROUND

It is extremely difficult to treat spine disorders with stabilization in patients with rheumatoid arthritis. Because revision rates are significantly higher in rigid stabilization. To date, there is no data about patients with rheumatoid arthritis treated with dynamic stabilization. Our aim was to compare the radiological and clinical results of patients with rheumatoid arthritis who underwent lumbar rigid stabilization or dynamic stabilization with Polyetheretherketone rod (PEEK).

METHODS

Patients with degenerative lumbar spine disease with rheumatoid arthritis who underwent dynamic stabilization between 2013 and 2015 and rigid stabilization between 2010 and 2012 were evaluated radiologically for adjacent segment disease, proximal junctional kyphosis, system problem (nonunion, screw loosening, instrumentation failure, pull out). It was also compared according to both the revision rates and the Visual Analog Scale and Oswestry Disability Index scores at the 12th month and 24th month.

RESULTS

The difference of decrease in Visual Analog Scale and Oswestry Disability Index scores from preoperative to 12th month between patients who underwent dynamic stabilization and rigid stabilization was statistically insignificant. However, there was a significant difference of increase in Visual Analog Scale and Oswestry Disability Index scores between the 12th month and 24th month of patients who underwent rigid stabilization, compared with patients with dynamic stabilization. In patients with dynamic stabilization, the problems of instrumentation were seen less frequently. Revision rates were high in patients with rigid stabilization when compared the patients with dynamic stabilization.

CONCLUSION

Radiological and clinical outcomes in patients with rheumatoid arthritis operated with dynamic stabilization are more significant when compared to rigid stabilization. These patients have lower pain and disability scores in their follow up periods. Revision rates are lower in patients with dynamic stabilization.

Does Rheumatoid Arthritis Affect the Infection and Complications Rates of Spinal Surgery? A Systematic Review and Meta-Analysis

BACKGROUND

Rheumatoid arthritis (RA) is a chronic autoimmune disease that produces synovial membrane inflammation and causes progressive articular damage with function loss. Some controversy exists regarding whether RA is associated with infection and complications after spinal surgery. The present study aimed to determine the effect of RA on spinal surgery infection and complications.

METHODS

A systematic literature search was performed in accordance with the PRISMA (preferred reporting items for systematic reviews and meta-analyses) guidelines. All studies that had compared patients who had undergone spinal surgery with and without RA were included in the analysis.

RESULTS

We found significantly greater rates statistically of complications (odds ratio [OR], 1.43; 95% confidence interval [CI], 1.20-1.70; P < 0.05) and infections (OR, 1.69; 95% CI, 1.46-1.95, P < 0.05) in those with RA than in those without RA after spinal surgery. When registry data were excluded, the results suggested that the incidence of complications (OR, 2.24; 95% CI, 0.92-5.44; P = 0.08) and infections (OR, 1.76; 95% CI, 1.50-2.07; P < 0.05) was still greater for the RA group than for the non-RA group.

CONCLUSION

When undergoing spinal surgery, patients with RA have a greater risk of operative complications and infection. Surgeons should be aware of these risks and appropriately plan spinal operation for patients with RA to reduce the risk of complications.

Surgical Management of the Lumbar Spine in Rheumatoid Arthritis

STUDY DESIGN

Narrative review.

OBJECTIVE

To provide an overview on the diagnosis and surgical management of rheumatoid involvement of the lumbar spine. Rheumatoid arthritis (RA) is a chronic inflammatory disease of synovial joints, most commonly appendicular followed by axial. Although cervical spine involvement of RA is well documented, data on lumbar spine involvement and surgical management remains limited.

METHODS

Using PubMed, studies published prior to November 2018 with the keywords "RA, etiology"; "RA, spine management"; "RA, surgical management"; "RA, treatment"; "RA, DMARDs"; "RA, lumbar spine"; "RA, spine surgical outcomes"; "RA, imaging" were evaluated.

RESULTS

The narrative review addresses the epidemiology, manifestations, imaging, surgical complications, and operative and nonoperative management of RA involvement of the lumbar spine.

CONCLUSIONS

Rheumatoid involvement of the lumbar spine can present with lower back pain, neurogenic claudication, radiculopathy, spinal deformity, and instability. Patients with RA have significantly higher rates of vertebral fractures and complications following surgical intervention. However, in the setting of instability and spinal deformity, thoughtful surgical planning in conjunction with optimal medical management is recommended.

Risk prediction of degenerative scoliosis combined with lumbar spinal stenosis in patients with rheumatoid arthritis: a case-control study

The purpose of this study is to compare incidence of degenerative scoliosis (DS) in patients who diagnosed lumbar spinal stenosis (LSS) with or without rheumatoid arthritis (RA) and identify the risk factors of DS severity in RA patients. 61 LSS patients with RA (RA group) and 87 demographic-matched LSS patients without RA (NoRA group) from January 2013 to April 2018 were enrolled. The extracted information includes RA-related parameters such as Steinbrocker classification, disease-modifying anti-rheumatic drugs (DMARDs), and DS-related information such as Cobb angle, apical vertebra, along with osteoporosis and history of total knee arthroplasty (TKA). Comparisons between RA and NoRA group and between DS and non-DS subgroup with RA were performed, as well as the risk factors on DS severity in RA patients. The incidence of DS in RA group was 42.6%, larger than that of NoRA group (P = 0.002). The mean Cobb angle between the two groups was of no difference (P = 0.076). The apical vertebrae were both mainly focused on L3 and L4 vertebrae in both groups with no significant difference on the distribution of apical vertebrae (P = 0.786). Female took a larger proportion in DS subgroup than that of NoDS subgroup in patients with RA (P = 0.039), while Steinbrocker classification was irrelevant to the occurrence of DS and Cobb angle. Multiple regression analysis showed that TKA was a risk factor for the severity of Cobb angle (P = 0.040). The incidence of DS in LSS patients with RA is higher than non-RA patients. RA patients performed TKA sustained less severity of DS.

Perioperative outcomes associated with thoracolumbar 3-column osteotomies for adult spinal deformity patients with rheumatoid arthritis

OBJECTIVE

Spinal deformity causing spinal imbalance is directly correlated to pain and disability. Prior studies suggest adult spinal deformity (ASD) patients with rheumatoid arthritis (RA) have more complex deformities and are at higher risk for complications. In this study the authors compared outcomes of ASD patients with RA following thoracolumbar 3-column osteotomies to outcomes of a matched control cohort.

METHODS

All patients with RA who underwent 3-column osteotomy for thoracolumbar deformity correction performed by the senior author from 2006 to 2016 were identified retrospectively. A cohort of patients without RA who underwent 3-column osteotomies for deformity correction was matched based on multiple clinical factors. Data regarding demographics and surgical approach, along with endpoints including perioperative outcomes, reoperations, and incidence of proximal junctional kyphosis (PJK) were reviewed. Univariate analyses were used to compare patients with RA to matched controls.

RESULTS

Eighteen ASD patients with RA were identified, and a matched cohort of 217 patients was generated. With regard to patients with RA, 11.1% were male and the mean age was 68.1 years. Vertebral column resection (VCR) was performed in 22.2% and pedicle subtraction osteotomy (PSO) in 77.8% of patients. Mean case length was 324.4 minutes and estimated blood loss (EBL) was 2053.6 ml. Complications were observed in 38.9% of patients with RA and 29.0% of patients without RA (p = 0.380), with a trend toward increased medical complications (38.9% vs 21.2%, p = 0.084). Patients with RA had a significantly higher incidence of deep vein thrombosis (DVT)/pulmonary embolism (PE) (11.1% vs 1.8%, p = 0.017) and wound infections (16.7% vs 5.1%, p = 0.046). PJK occurred in 16.7% of patients with RA, and 33.3% of RA patients underwent reoperation. Incidence rates of PJK and reoperation in matched controls were 12.9% and 25.3%, respectively (p = 0.373, p = 0.458). At follow-up, mean sagittal vertical axis (SVA) was 6.1 cm in patients with RA and 4.5 cm in matched controls (p = 0.206).

CONCLUSIONS

Findings from this study suggest that RA patients experience a higher incidence of medical complications, specifically DVT/PE. Preoperative lower-extremity ultrasounds, inferior vena cava (IVC) filter placement, and/or early initiation of DVT prophylaxis in RA patients may be indicated. Perioperative complications, morbidity, and long-term outcomes are otherwise similar to non-RA patients.

[Low back pain in rheumatoid arthritis]

Low back pain (LBP) in patients with rheumatoid arthritis (RA) has so far been of little concern in clinical investigations. The main focus of scientific publications on spinal problems in RA was the cervical spine. In a recent study, we could demonstrate that LBP in RA patients leads to a significantly higher degree of disability and depression as well as to a reduction in quality of life compared to RA patients without LBP. If there is a specific reason for the additional symptom of LBP, such as spinal stenosis or segmental instability, surgical treatment may be indicated to improve disability and quality of life. For a successful outcome of spinal surgery it is important to address the specific aspects of RA patients, such as poor bone quality and the immunosuppressive effect of antirheumatic drug treatment. Whenever possible, minimally invasive surgical techniques should be used and the immunosuppressive medication should be stopped before surgery.