Diffuse Idiopathic Skeletal Hyperostosis of the Spine: Pathophysiology, Diagnosis, and Management

Cervical spine fracture in diffuse idiopathic skeletal hyperostosis: A bibliometric analysis

Objective

The study aimed to assess and investigate cervical spine fracture in diffuse idiopathic skeletal hyperostosis and to identify research trends in cervical spine fracture in diffuse idiopathic skeletal hyperostosis in countries around the world using bibliometric analysis.

Method

We examined bibliometric data obtained from the Scopus database collection for the periods 1 January 2000 and 1 January 2022. Authors, institutions, nations, publications, keywords, and references were noted and analyzed. The total number of research articles published on the subject of diffuse idiopathic skeletal hyperostosis was used to calculate the amount of research on that subject undertaken in the study period. A sample of the publication data collected from the Scopus database was then analyzed using the Bibliometric program and used to develop a relationship chart using the Bibliometrix and VOSviewer programs.

Results

The number of citations was assumed to be a qualitative measure of the publication. We estimated the impact of the research using several metrics, including the H-index, in the bibliometric analysis of authors, geographic areas, institutes, and references. A total of 52 studies related to cervical spine fractures in diffuse idiopathic skeletal hyperostosis were identified. Only 5.12% of those studies were cited in other publications, for a total of 1410 citations in publications by 342 authors, of whom only two authors had published a single study. Co-authorships occurred at 7.273%. Diseases common in elderly males were often studied retrospectively, and "Diffuse Idiopathic Skeletal Hyperostosis" was a frequently mentioned keyword.

Conclusion

The findings of this study provide insights into authors, institutions, key publications, and research trends related to diffuse idiopathic skeletal hyperostosis and can potentially serve as a guide for further studies in the field. The bibliometric analysis of cervical spine fractures in patients with diffuse idiopathic skeletal hyperostosis highlights important contributors, influential papers, geographical trends, and study characteristics in this area of research.

Risk factors for bone cement dislodgement following balloon kyphoplasty for osteoporotic vertebral compression fracture

OBJECTIVE

The study aimed to determine the incidence and risk factors associated with bone cement dislodgement in patients with osteoporotic vertebral compression fracture following balloon kyphoplasty treatment.

METHODS

A retrospective study was conducted on 203 patients who underwent kyphoplasty in 255 vertebral bodies between January 2017 and December 2021. The patients were categorized into two groups: the bone cement dislodgment group (n = 16) and the non-bone cement dislodgement group (n = 239). Various patient characteristics and radiologic parameters were evaluated. Statistical analysis involved the assessment of the background homogeneity of the group by using independent sample t tests, chi-square tests, and Fisher's exact. Univariate and multivariate logistic regression analyses were performed to explore the impact of background variables on cement dislodgement.

RESULTS

The results revealed that split-type fracture (χ2 = 31.706, p < 0.001), DISH (χ2 = 18.827, p = 0.011), pedicle fracture (χ2 = 22.246, p < 0.001), endplate deficit (χ2 = 14.023, p < 0.001), posterior wall injury (χ2 = 29.124, p < 0.001), and intervertebral vacuum cleft (χ2 = 21.469, p < 0.001) were the factors that significantly differed between the two groups. The multivariate logistic regression analysis revealed posterior wall injury (OR = 12.983, p = 0.025) and intervertebral vacuum cleft (OR = 5.062, p = 0.024) to be independent risk factors.

CONCLUSION

The incidence of bone cement dislodgement in our study was 6.3%. This study underscores the importance of using preoperative radiologic parameters to predict the risk of bone cement dislodgement following balloon kyphoplasty.

Significant Reduction in Bone Density as Measured by Hounsfield Units in Patients with Ankylosing Spondylitis or Diffuse Idiopathic Skeletal Hyperostosis

Background: Multisegmental pathologic autofusion occurs in patients with ankylosing spondylitis (AS) and diffuse idiopathic skeletal hyperostosis (DISH). It may lead to reduced vertebral bone density due to stress shielding. Methods: This study aimed to determine the effects of autofusion on bone density by measuring Hounsfield units (HU) in the mobile and immobile spinal segments of patients with AS and DISH treated at a tertiary care center. The mean HU was calculated for five distinct regions-cranial adjacent mobile segment, cranial fused segment, mid-construct fused segment, caudal fused segment, and caudal adjacent mobile segment. Means for each region were compared using paired-sample t-tests. Multivariable regression was used to determine independent predictors of mid-fused segment HUs. Results: One hundred patients were included (mean age 76 ± 11 years, 74% male). The mean HU for the mid-construct fused segment (100, 95% CI [86, 113]) was significantly lower than both cranial and caudal fused segments (174 and 108, respectively; both p < 0.001), and cranial and caudal adjacent mobile segments (195 and 115, respectively; both p < 0.001). Multivariable regression showed the mid-construct HUs were predicted by history of smoking (-30 HU, p = 0.009). Conclusions: HUs were significantly reduced in the middle of long-segment autofusion, which was consistent with stress shielding. Such shielding may contribute to the diminution of vertebral bone integrity in AS/DISH patients and potentially increased fracture risk.

Cervical Spine Osteophyte: A Case Report of an Unusual Presentation

Diffuse idiopathic skeletal hyperostosis (DISH) is a condition that causes abnormal bone growth at the sites of ligament insertion, mainly in the spine. It is of unknown etiology and usually affects older males. It is often asymptomatic, but it can sometimes cause dysphagia if it affects the anterior cervical spine. We report the case of a 50-year-old male patient with DISH who presented with chronic dysphagia and was diagnosed with a large cervical osteophyte compressing the esophagus. The patient had a history of several comorbidities, including diabetes, hypertension, stroke, and gout. He underwent surgical removal of the osteophyte and recovered well. We discuss the clinical features, diagnosis, and treatment options for this rare complication of DISH.

Diffuse idiopathic skeletal hyperostosis as a cause for dysphagia in a patient with ankylosing spondylitis

BACKGROUND

Diffuse idiopathic skeletal hyperostosis (DISH) is characterized by ankylosing spinal alterations which are often asymptomatic but may typically cause back pain and spinal stiffness. Presence of DISH may complicate spinal trauma and lead to unstable fractures requiring surgical intervention. Treatment options include physical activity, symptomatic treatment, local heat application, and optimization of metabolic comorbidities.

CASE

A multimorbid older patient was admitted to the gastroenterological ward for the investigation of progressive dysphagia and weight loss. Gastroscopy revealed a dorsal impression of the esophagus at 25 cm from the incisor. Clinical work-up including computed tomography (CT) and magnetic resonance imaging (MRI) ruled out malignancy but showed ankylosing spondylophytes and non-recent fractures of vertebrae C5-C7, compatible with DISH of the cervicothoracic spine as a cause for the esophageal impression. Notably, imaging diagnostics showed ankylosing spine alterations extending to the lumbar spine and both sacroiliac joints, suggestive of ankylosing spondylitis (AS). Typical imaging characteristics, a history of psoriasis, and positive HLA*B27 status supported the diagnosis of underlying AS in this patient with dysphagia as an unusual primary symptom of DISH. Additionally, pulmonary alterations compatible with a usual interstitial pneumonia (UIP)-like pattern were seen on lung CT.

CONCLUSION

Overlaps among AS, DISH and pulmonary abnormalities including UIP have been described previously; however, they represent unexpected findings in this older patient. This case underlines the importance of interdisciplinary collaboration and consideration of DISH as a differential diagnosis in patients with atypical symptoms.

Imaging Characteristics of Diffuse Idiopathic Skeletal Hyperostosis: More Than Just Spinal Bony Bridges

Diffuse idiopathic skeletal hyperostosis (DISH) is a systemic condition characterized by new bone formation and enthesopathies of the axial and peripheral skeleton. The pathogenesis of DISH is not well understood, and it is currently considered a non-inflammatory condition with an underlying metabolic derangement. Currently, DISH diagnosis relies on the Resnick and Niwayama criteria, which encompass end-stage disease with an already ankylotic spine. Imaging characterization of the axial and peripheral skeleton in DISH subjects may potentially help identify earlier diagnostic criteria and provide further data for deciphering the general pathogenesis of DISH and new bone formation. In the current review, we aim to summarize and characterize axial and peripheral imaging findings of the skeleton related to DISH, along with their clinical and pathogenetic relevance.

Young thoracic vertebra diffuse idiopathic skeletal hyperostosis with Scheuermann disease: A case report

BACKGROUND

Diffuse idiopathic skeletal hyperostosis (DISH) is a disorder characterised by the calcification and ossification of ligaments and entheses. It is a frequent occurrence in elderly males, but rarely encountered in younger individuals.

CASE SUMMARY

A 24-year-old male was admitted to the hospital due to low back pain accompanied with numbness in both lower limbs for 10 d. Upon clinical examination and imaging tests, the patient was diagnosed with DISH with Scheuermann disease and thoracic spinal stenosis. Before the operation and medical treatment, the patient had hypoesthesia of the skin below the xiphoid process. Afterward, a standard laminectomy was conducted using ultrasonic bone curette and internal fixation was applied. Subsequently, the patient was given corticosteroids, neurotrophic drugs, hyperbaric oxygen and electric stimulation. As a result of the treatment, the patient’s sensory level decreased to the navel level and there was no major change in the muscle strength of the lower limbs. During follow-up, the patient’s skin sensation has returned to normal.

CONCLUSION

This case is a rare instance of DISH co-existing with Scheuermann’s disease in a young adult. This provides a valuable reference point for spine surgeons, as DISH is more commonly observed in middle-aged and elder adults.

The natural course of bridging osteophyte formation on MRI—A pictorial illustration

Diffuse skeletal hyperostosis is a common spinal disorder, but its pathophysiology is mostly unclear. The disorder can lead to a variety of symptoms, but many patients remain relatively asymptomatic. We present a case demonstrating the development of bridging osteophytes on a series of magnetic resonance images. An elderly person's spine was scanned repeatedly due to non-specific back pain during the last 4 years and the consecutive images revealed the formation of a bony bridge in the lumbar spine. Extensive bone marrow edema was seen during the formation of the osteophyte, suggestive of an ongoing inflammatory process. This case underlines that the inflammatory reaction in diffuse skeletal hyperostosis can be intense and prolonged, and its role might be worth studying further.

The value of magnetic resonance imaging and computed tomography in the study of spinal disorders

Computed tomography (CT) and magnetic resonance imaging (MRI) have replaced conventional radiography in the study of many spinal conditions, it is essential to know when these techniques are indicated instead of or as complementary tests to radiography, which findings can be expected in different clinical settings, and their significance in the diagnosis of different spinal conditions. Proper use of CT and MRI in spinal disorders may facilitate diagnosis and management of spinal conditions. An adequate clinical approach, a good understanding of the pathological manifestations demonstrated by these imaging techniques and a comprehensive report based on a universally accepted nomenclature represent the indispensable tools to improve the diagnostic approach and the decision-making process in patients with spinal pain. Several guidelines are available to assist clinicians in ordering appropriate imaging techniques to achieve an accurate diagnosis and to ensure appropriate medical care that meets the efficacy and safety needs of patients. This article reviews the clinical indications of CT and MRI in different pathologic conditions affecting the spine, including congenital, traumatic, degenerative, inflammatory, infectious and tumor disorders, as well as their main imaging features. It is intended to be a pictorial guide to clinicians involved in the diagnosis and treatment of spinal disorders.

Prognostic models for the development of diffuse idiopathic skeletal hyperostosis

INTRODUCTION

Diffuse idiopathic skeletal hyperostosis (DISH) is a common worldwide disease in adults over 50 years of age. The clinical diagnosis at the beginning of the disease is very difficult, even impossible, without typical symptoms and image changes. Mathematical models for searching risk factors include analysing medical history data, comorbidities, biochemical and instrumental results.