Infectious Discitis and Spondylodiscitis in Children

Evaluation of the Efficacy of Unilateral Biportal Endoscopic Lamina Osteotomy Replantation Assisted by Ultrasonic Bone Scalpel in the Treatment of Lumbar Infectious Spondylitis

OBJECTIVE

To analyze the clinical efficacy of ultrasonic bone scalpel (UBS)-assisted unilateral biportal endoscopic lamina osteotomy replantation (ULOR) for treating lumbar infectious spondylitis (LIS).

METHODS

We conducted a retrospective analysis of patients with LIS who had therapy with UBS-assisted ULOR at our hospital between January 2020 and May 2023. A total of 17 instances matched the inclusion criteria, consisting of 7 females and 10 males. The UBS was utilized during surgery to extract the lamina completely, followed by large bone grafting to fuse the cleaned intervertebral space. The study recorded and analyzed various parameters in the included patients before and after surgery.

RESULTS

All 17 patients underwent a successful operation with an average duration of 136.82 ± 21.35 minutes, average blood loss of 77.43 ± 10.19 ml, and an average follow-up period of 18.55 ± 3.47 months. Following the surgical intervention, the patients experienced a substantial improvement in their clinical symptoms, accompanied by a significant drop in white blood cell, erythrocyte sedimentation rate, and C-reactive protein levels (all P < 0.001). The postoperative visual analog scale scores and Oswestry Disability Index showed considerable improvement (both P < 0.001). The postoperative Cobb angle and intervertebral space height were significantly corrected (P < 0.001). At the last follow-up, the success rate of lumbar fusion was 100%, and there were no instances of infection recurring.

CONCLUSIONS

The use of ULOR with assistance from UBS for the treatment of LIS has proven to be beneficial. It provides significant relief from symptoms and corrects lumbar deformity. This surgical procedure is both effective and safe.

Diagnostic and therapeutic approach to spondylodiscitis in Spanish children through the RIOPed network: evaluation before and after the publication of the national consensus document

OBJECTIVE

Pediatric spondylodiscitis (PSD) is an uncommon condition, for which there are no specific international clinical guidelines. Factors related to complications have not been stablished. Our aim was to describe clinical and epidemiological characteristics of PSD, to analyze factors associated with complications and to evaluate adherence to the recommendations of the Spanish National Consensus Document (NCD) for the diagnostic and therapeutic approach to acute osteoarticular infections.

MATERIAL AND METHODS

Ambispective, multicenter, national study of two PSD cohorts: historical (2008-2012) and prospective (2015-2020, after publication of NCD). Patients with diagnosis of PSD were included. Demographic, clinical, microbiological and radiological data were recorded. Factors related to the development of complications were analized by logistic regression. Comparisons between both cohorts were performed.

RESULTS

Ninety-eight PSD were included. In 84.7%, diagnosis was confirmed by magnetic resonance imaging. Microbiological isolation was obtained in 6.1%, with methicillin-sensitive S. aureus as the main etiologic agent. Complications occurred in 18.9%, the most frequent being soft tissue abscess. Of the 8.6% of patients with sequelae, persistent pain was the most common. Comparing cohorts, there was better adherence to NCD treatment recommendations in the prospective one (57.6% vs. 12.9%, p < 0.01), including a reduction in the length of intravenous antibiotic therapy (10 vs. 14 days, p < 0.01).

CONCLUSIONS

The evolution of PSD in our series was favorable, with low frequency of complications and sequelae. The adherence to the recommendations of the NCD was high. Studies with larger sample size are needed to establish new recommendations to optimize the approach to these infections.

Discitis Mimicking Septic Arthritis in a 17-Month-Old Boy

Discitis in children is uncommon, typically occurring between the ages of two and eight years. The etiology is not established, but it is generally considered a bacterial infection. Symptoms vary with age but commonly include irritability, refusal to walk, and back pain. These various clinical presentations cause delays in diagnosis. We present this case to draw attention and familiarise clinicians with its presentations. A 17-month-old boy presented with a one-week history of refusal to walk. Examination showed an unusual finding of the child keeping his right leg in a flexed position with hip tenderness. Inflammatory markers were raised. Initially, the patient was managed for suspected septic arthritis of the hip joint. Initial tests were inconclusive, and magnetic resonance imaging (MRI) on day 23 revealed discitis at L4-L5. After a course of antibiotics and monitoring of inflammatory markers, his clinical condition improved. The mainstay of treatment is antibiotics, with surgery reserved for complicated cases. Discitis has a good prognosis in children.

Spondylodiscitis Following Perforated Acute Appendicitis: A Case Report

Spondylodiscitis is a multifactorial disease of significant medical and socioeconomic importance, the treatment of which presents a challenge to clinicians and surgeons. Acute appendicitis is a common inflammatory disease in children, with postoperative complications occurring in up to 55% of cases. We present the case of a 15-year-old male with symptoms of severe back pain and fever two months following surgery for perforated appendicitis. The computed tomography (CT) revealed spondylodiscitis of T12-L1 spinal level. Discectomy and posterior pedicle-screw fixation were performed, followed by antibiotic treatment resulted in the resolution of preoperative symptoms. To the best of our knowledge, this is the third case of spondylodiscitis after perforated acute appendicitis in literature. Timely diagnosis and treatment in cases of spondylodiscitis are prerequisites for lowering the rate of permanent neurological deficits in these patients.

Sonographic diagnosis of spondylodiscitis in a young child

Sonographic diagnosis of spondylodiscitis is described in a 21-month-old girl who presented with altered gait. Spondylodiscitis, also referred to as discitis-osteomyelitis, is an infection of the intervertebral disc and adjacent vertebrae. The imaging modality of choice is spinal magnetic resonance imaging. Our case is the first description in the English language of the sonographic diagnosis of spondylodiscitis. Pediatric radiologists and sonographers should be acquainted with its features, for both incidental and intentional diagnosis.

Early Diagnosis and Successful Empirical Treatment of L1-L2 Spondylodiscitis in a 21-Month-Old Girl: A Case Report

BACKGROUND Infantile spondylodiscitis is a rare condition with a varied clinical presentation. Microbial infection may not always be identified, but early diagnosis and management are required to prevent long-term and irreversible complications, including spinal deformities and vertebral instability. CASE REPORT This report is of a 21-month-old girl with a 3-week history of difficulty in walking and constipation due to L1-L2 spondylodiscitis following a gluteal skin burn. The family had sought medical advice multiple times, but results of all investigations were unremarkable. Her initial spine X-ray was negative but her spine magnetic resonance imaging (MRI) showed a picture suggestive of spondylodiscitis, which then responded to empiric treatment with broad-spectrum antibiotics. The patient showed complete resolution of clinical symptoms and her bowel habits came back to normal after 6 months of complete antibiotics treatment. Her repeat spine MRI showed a significant improvement of her spondylodiscitis. CONCLUSIONS This report has highlighted the importance of rapid diagnosis and management of infantile spondylodiscitis and the challenging approach to treatment when no infectious organism can be identified, as well as the early initiation of antibiotics therapy when appropriate in pediatric patients to avoid serious neurological complications associated with spondylodiscitis. Thus, it is essential to assess children with refusal to walk, gait problems, or back discomfort, especially when they are associated with high inflammatory markers.

Spondylodiscitis following perforated acute appendicitis in a 14-year-old female: A case report

INTRODUCTION AND IMPORTANCE

Acute appendicitis is a common surgical emergency, often resulting in perforation and increased morbidity. Up to 55 % of children with complicated appendicitis may experience a complication such as infection, bowel obstruction, or unplanned hospital re-admission (Blakely et al., 2011 [23]). However, the development of infectious spondylodiscitis following appendectomy is an extremely rare complication, particularly in pediatric patients. We present the first reported case of lumbar spondylodiscitis occurring post-perforated appendicitis in a 14-year-old female, highlighting the importance of recognizing and managing uncommon complications.

CASE PRESENTATION

A previously healthy 14-year-old female underwent urgent appendectomy for perforated appendicitis. Postoperatively, she developed severe back pain and immobility. Imaging revealed early lumbar discitis, and Pseudomonas aeruginosa was isolated from the surgical site. The patient received multiple antibiotic regimens, including vancomycin, ceftazidime, and meropenem, resulting in clinical improvement.

CLINICAL DISCUSSION

Infectious spondylodiscitis is typically hematogenously spread or due to direct inoculation. In this case, the spread from a contiguous focus of infection without vascular insufficiency is suspected. The coexistence of appendicitis and spondylodiscitis poses diagnostic challenges, requiring a multidisciplinary approach for accurate diagnosis and appropriate treatment.

CONCLUSION

This unique case highlights the need for vigilance in recognizing rare complications of appendicitis, such as infectious spondylodiscitis. Early diagnosis and tailored antibiotic therapy are crucial for optimal outcomes. Further research is needed to explore the underlying mechanisms and risk factors associated with this rare complication.

Laboratory diagnostics for primary spinal infections in pediatric and adult populations: a narrative review

Primary spinal infection (PSI) is a generic term covering a heterogeneous group of infections that can affect the vertebral body, intervertebral disks, the content of the medullary cavity, and adjacent paraspinal tissues. Patients' characteristics can vary significantly, notably according to their age, and some of these characteristics undoubtedly play a primordial role in the occurrence of a PSI and in the type of offending pathogen. Before approaching the subject of laboratory diagnostics, it is essential to define the characteristics of the patient and their infection, which can then guide the physician toward specific diagnostic approaches. This review critically examined the roles and usefulness of traditional and modern laboratory diagnostics in supporting clinicians' decision-making in cases of pediatric and adult primary spinal infection (PSI). It appears impossible to compare PSIs in children and adults, whether from an epidemiological, clinical, bacteriological, or biological perspective. The recipients are really too different, and the responsible germs are closely correlated to their age. Secondly, the interpretation of traditional laboratory blood tests appears to contribute little guidance for clinicians attempting to diagnose a PSI. Biopsy or needle aspiration for bacterial identification remains a controversial subject, as the success rates of these procedures for identifying causative organisms are relatively uncertain in pediatric populations.Using nucleic acid amplification assays (NAAAs) on biopsy samples has been demonstrated to be more sensitive than conventional cultures for diagnosing PSI. Recent advances in next-generation sequencing (NGS) are particularly interesting for establishing a microbiological diagnosis of a PSI when standard cultures and NAAAs have failed to detect the culprit. We can even imagine that plasma metagenomic NGS using plasma (known as "liquid biopsy") is a diagnostic approach that can detect not only pathogens circulating in the bloodstream but also those causing focal infections, and thus eliminate the need for source sample collection using costly invasive surgical procedures.

Tumors and infections of the growing spine

The growing spine differs from the adult spine in several ways. Although tumors and infections cause only a small percentage of pediatric back pain incidences, delayed proper diagnosis and treatment may be disastrous. Benign lesions, such as osteoid osteoma, osteoblastoma, and aneurysmal bone cyst in the spine, are predominant during the first two decades of life, whereas malignant bony spinal tumors are rare. In the pediatric population, malignant spine tumors include osteosarcoma, Ewing's sarcoma, lymphoma, and metastatic neuroblastoma. Infections of the growing spine are rare, with the incidence of discitis peaking in patients under the age of 5 years and that of vertebral osteomyelitis peaking in older children. Spondylodiscitis is often a benign, self-limiting condition with low potential for bone destruction. Conservative treatments, including bedrest, immobilization, and antibiotics, are usually sufficient. Spinal tuberculosis is a frequently observed form of skeletal tuberculosis, especially in developing countries. Indications for surgical treatment include neurologic deficit, spinal instability, progressive kyphosis, late-onset paraplegia, and advanced disease unresponsive to nonoperative treatment. Spinal tumors and infections should be considered potential diagnoses in cases with spinal pain unrelated to the child's activity, accompanied by fever, malaise, and weight loss. In spinal tumors, early diagnosis, fast and adequate multidisciplinary management, appropriate en bloc resection, and reconstruction improve local control, survival, and quality of life. Pyogenic, hematogenous spondylodiscitis is the most common spinal infection; however, tuberculosis-induced spondylodiscitis should also be considered. Level of evidence: level 4.

Understanding the management of pediatric spondylodiscitis based on existing literature; a systematic review

BACKGROUND

Spondylodiscitis (SD), a rare disease in children, poses diagnostic challenges due to non-specific presenting symptoms, scarcity in incidence, and difficulty expressing pain in non-verbal children.

METHOD

A comprehensive search was conducted on three databases, including PubMed/Medline, Web of Science, and Scopus until March 2023. The inclusion criteria were studies that investigated the clinical characteristics, treatment, and complications of children's spondylodiscitis. Full text of cross-sectional and cohort studies were added. The quality assessment of cohort studies was conducted using the Newcastle-Ottawa Quality Assessment Scale. The search, screening, and data extraction were performed by two researchers independently.

RESULT

Clinical manifestations of discitis in children are nonspecific, such as back pain, fever, reduced ability or inability to walk or sit, limping, and reduced range of movements. The mean delay in the time of diagnosis was 4.8 weeks. The most affected site of all the studies was the lumbar spine. 94% of studies reported increased inflammatory markers such as white blood cell count, C-reactive protein, and erythrocyte sedimentation rate. Less than 30% of patients had positive blood cultures and biopsy findings. The most common microbiological results (64%) were Staphylococcus Aureus and Kingella kingae. In radiographic evaluation, intervertebral disk narrowing, lumbar lordosis reduction, loss of disk height, and destruction of the vertebral body have been reported. In all studies, antibiotic therapy was initiated; in 52% immobilization was employed, and 29% of studies reported surgery was performed, and the follow-up period differed from 1.5 months to 156 months. 94% of studies reported complications such as vertebral body destruction, back pain, kyphosis, reduced range of movement, scoliosis, and neurological complications.

CONCLUSION

Spondylodiscitis is an uncommon, heterogeneous, multifactorial disease with resulting difficult and delayed diagnosis. Due to its morbidity, it is essential to investigate children with refusal to walk, gait disturbances, or back pain, particularly when associated with elevated inflammatory markers.

[Spondylodiscitis]

Spondylodiscitis is a severe infectious disease of the spine that affects the intervertebral discs and adjacent vertebrae. It can lead to nonspecific pain, limited mobility, and destruction of spinal structures. Various pathogens, such as bacteria, fungi, or parasites, can trigger the disease. An early diagnosis and targeted treatment are crucial to reduce the risk of serious complications. Magnetic resonance imaging (MRI) with contrast agent and blood tests are essential for the diagnosis and assessing the course of the disease. The treatment includes conservative and surgical approaches. Conservative treatment consists of a minimum 6‑week antibiotic course and immobilization of the affected area. Surgical interventions, along with several weeks of antibiotic therapy, are indicated for instabilities or complications in order to eliminate the infection focus and to restore spinal stability.

Vertebral Osteomyelitis Secondary to a Retroperitoneal Abscess in an Adolescent Male: A Case Report

Pyogenic vertebral osteomyelitis (PVO) is included in a spectrum of spine infections called spondylodiscitis. It is commonly caused by hematogenous seeding. The annual incidence of spondylodiscitis is 2.4 per 100,000 person-years and the incidence triples for people over seventy.

We report a case of a previously healthy 14-year-old male with a rare presentation of vertebral osteomyelitis associated with a large retroperitoneal abscess of unknown origin, manifested with flank pain, back pain, and fever, and treated with antibiotics with good short-term outcomes.

We concluded that vertebral osteomyelitis in adolescent patients could manifest with back or flank pain. Moreover, it can occur as an extraperitoneal manifestation of a retroperitoneal abscess.

Spondylodiscitis in children

Paediatric spondylodiscitis (SD) (discitis) is a rare bacterial infection involving the inter-vertebral disc space and adjacent vertebrae. The non-specific manifestations of SD can lead to delayed diagnosis, which may ultimately result in spinal deformities and even devastating neurological complications. The main purpose of this review is to discuss the epidemiology, clinical, laboratory and radiological features, management and outcome of paediatric SD to help paediatricians recognise and treat this important condition.

What Do We Know about Spondylodiscitis in Children? A Retrospective Study

Pediatric spondylodiscitis (PSD) is a rare disease with a major impact on mobility and functional status. Data concerning demographic and microbiological characteristics, clinical course, treatment, and outcome are scarce. Therefore, the aim of this study was to present clinical experiences of a third-level hospital (2009–2019) in PSD and compare these with adult spondylodiscitis (ASD). Of a total of 10 PSD patients, most of the infants presented with unspecific pain such as hip pain or a limping, misleading an adequate diagnosis of spine origin. Eight patients could be treated conservatively whereas surgery was performed in two cases with one case of tuberculous PSD (tPSD). The causative agent was detected in three of the patients. The diagnosis of PSD is often difficult since clinical symptoms are unspecific and causative pathogens often remain undetected. Nevertheless, empirical anti-infective therapy also seems to be effective. Based on recent studies, clinicians should be encouraged to keep the duration of anti-infective therapy in children short. Since comorbidities are not presented in PSD it is unclear which children suffer from PSD; thus, studies are necessary to identify predisposing factors for PSD. In our study, PSD differs from ASD in diagnostic and especially in therapeutic aspects. Therefore, specific guidelines for PSD would be desirable.

Spondylodiscitis in Pediatric Age: A Retrospective Cohort Study

BACKGROUND

Pediatric spondylodiscitis is rare, hardly diagnosed and treated due to the nonspecificity of clinical presentation and laboratory investigations, difficulty of etiologic identification and lack of management guidelines.

METHODS

A retrospective study was conducted on 29 children with spondylodiscitis. Clinical, hematic and radiologic data were collected and compared between 2 age-subgroups (below and from 4 years old on) to investigate age-related differences. Epidemiologic, management and follow-up data were also described.

RESULTS

Slight male predominance and a peak of incidence <2 years were observed. Symptoms were significantly differently distributed in the 2 age-subgroups: children <4 years showed mainly refusal/inability to sit or bear weight, irritability, limping and poor general conditions; children ≥4 years most frequently had back pain and fever, and pain upon palpation of the spine. The lumbar spine and more than 1 vertebra were most frequently involved. Median diagnostic delay of 12 days was observed, without significant difference between age-subgroups, and delay >2 months was always associated with multivertebral involvement and complications. All children were treated with broad-spectrum antibiotics for a median of 12 weeks. Only in 1 complicated case, surgical treatment was also required.

CONCLUSIONS

The clinical presentation of spondylodiscitis may be age-specific, with younger children often exhibiting subtle signs and symptoms. Broad-spectrum antibiotics covering for Staphylococcus aureus should be initiated as soon as possible and performed many weeks, being effective in treating the infection without clinical sequelae, even in patients with comorbidities. Surgical treatment should be reserved for complicated cases with neurologic involvement.

Whole body magnetic resonance imaging in healthy children and adolescents. Bone marrow appearances of the axial skeleton

OBJECTIVE

To describe the findings of focal high signal on T2 weighted (T2W) images of the bone marrow in the axial skeleton as assessed by whole-body MRI in healthy and asymptomatic children and adolescents.

MATERIAL AND METHODS

We assessed the bone marrow of the mandible, shoulder girdle, thorax, spine, and pelvis on water-only Dixon T2W sequences as part of a whole-body MRI protocol in 196 healthy and asymptomatic children aged 5-19 years. Intensity (0-2 scale) and extension (1-4 scale) of focal high signal areas in the bone marrow were scored and divided into minor or major findings, based on intensity and extension to identify the potentially conspicuous lesions in a clinical setting.

RESULTS

We registered 415 areas of increased signal in the axial skeleton whereof 75 (38.3%) were major findings. Fifty-eight (29.6%) individuals had at least one major finding, mainly located in the pelvis (54, 72%). We found no differences according to gender. The number of minor findings increased with age (p = 0.020), but there were no significant differences in the number of major findings. The most conspicuous findings were in the pelvis, spine and sternum.

CONCLUSION

Non-specific bone marrow T2W hyperintensities in the axial skeleton are frequently detected on whole-body MRI in healthy, asymptomatic children. Awareness of this is important as some findings may resemble clinically silent lesions in children with suspected multifocal skeletal disease.

Espondilodiscite em idade pediátrica – uma doença rara, um diagnóstico difícil

Introdução e objetivo: a espondilodiscite é a infeção que atinge o disco intervertebral e as vértebras contíguas e representa dois a quatro % do total das infeções osteoarticulares em idade pediátrica. O agente patogénico é identificado em cerca de metade dos casos, sendo o Staphylococcus aureus o mais frequentemente isolado. Estudos recentes demonstram que entre os seis meses e os quatro anos a Kingella kingae tem um papel etiológico importante. O objetivo da exposição deste caso clínico foi chamar atenção para esta patologia rara cujo diagnóstico é difícil e exige um elevado nível de suspeição.Descrição do caso: criança de 16 meses, sexo masculino, com antecedentes de obstipação, é trazida múltiplas vezes à Urgência Pediátrica por quadro com mais de um mês de evolução de irritabilidade persistente, dor abdominal e recusa da marcha de agravamento progressivo. Na segunda vinda à Urgência Pediátrica apresentava dorsolombalgia à palpação da coluna dorsolombar e diminuição da lordose lombar, o que motivou a realização de avaliação analítica, sumária de urina, ecografia renal e vesical e radiografia dorsolombar sem alterações. Na terceira vinda à Urgência Pediátrica foi decidido internamento e solicitada ressonância magnética nuclear dorsolombar e cintigrafia óssea que revelaram espondilodiscite em D7-D8. Parâmetros analíticos sem alterações valorizáveis, exceto discreta elevação da velocidade de sedimentação. Hemoculturas e restante estudo etiológico negativo. Iniciou terapêutica endovenosa com cefuroxime e flucloxacilina, com melhoria progressiva das queixas álgicas. Aquando da alta, assintomático, mantendo flucloxacilina oral até completar seis semanas de tratamento. Reavaliado posteriormente, encontrando-se assintomático, com um exame físico, reavaliação analítica e radiografia dorsolombar sem alterações.Conclusões: a espondilodiscite é uma identidade de difícil diagnóstico, especialmente na criança, devido à sua raridade, clínica inespecífica, impossibilidade de as crianças verbalizarem os seus sintomas e aos sinais radiológicos tardios, requerendo um alto índice de suspeição. O intervalo médio de tempo entre o início dos sintomas e o diagnóstico é de três semanas a três meses. A ressonância magnética é o exame de escolha. As hemoculturas são, muitas vezes, negativas. O pilar do tratamento é a antibioterapia por várias semanas, mas a sua escolha e duração são controversas. O tratamento inadequado pode originar dor crônica, sequelas ortopédicas graves e complicações neurológicas devastadoras. Quando atempada e adequadamente tratada, a maioria dos casos apresenta uma evolução clínica benigna e autolimitada.

Kingella kingae Spinal Infections in Children

Nowadays, Kingella kingae is considered an important cause of primary spinal infections in children aged between 6 and 48 months. The presentation of the disease is often characterized by mild clinical features and a moderate biological inflammatory response, requiring a high index of suspicion. Performing magnetic resonance imaging (MRI) and obtaining an oropharyngeal specimen and subjecting it to a K. kingae-specific nucleic acid amplification test are recommended for its diagnosis. Most patients respond promptly to conservative treatment after administration of antibiotic therapy, which is prolonged for up to 3 months according to the individual clinical and biological response. Invasive surgical procedures are not required except for children who do not improve with antibiotic treatment, develop signs of cord compression, or if the presence of atypical microorganisms is suspected. Kingella kingae spinal infections usually run an indolent and benign clinical course, living no permanent sequelae.

Klebsiella Discitis in a 15-Year-Old Male Diagnosed With Plasma Microbial Cell-Free DNA Next-Generation Sequencing Test: A Case Report

Spinal discitis (SD) is a rare condition, particularly in the pediatric population. The course of SD may be acute or chronic, and the non-specificity of symptoms leads to great delays in diagnosis. The most commonly isolated causative organism is Staphylococcus aureus whereas gram-negative infections are hardly ever reported in the literature. Comorbidities that increase the risk of bacteremia such as diabetes, chronic kidney disease, HIV, and cancer are major risk factors for SD. Hereby, we present an atypical case of SD in a previously healthy 15-year-old male with an unusual organism, Klebsiella aerogenes, diagnosed by plasma microbial cell-free DNA with negative blood cultures. The clinical course was complicated by antibiotic resistance and subsequent development of a ventral epidural abscess requiring readmission followed by surgical drainage of the abscess with a prolonged course of antibiotics.

Presumptive bacteriological diagnosis of spondylodiscitis in infants less than 4 years by detecting K. kingae DNA in their oropharynx: Data from a preliminar two centers study

Background and Objectives

Most cases of spondylodiscitis in children aged between 6 and 48 months old could be caused primarily by K. kingae. The present prospective study aimed to determine whether an innovative and indirect diagnosis approach - based on detection of K. kingae DNA in the oropharynx of children with suspected spondylodiscitis - provides sufficient evidence that this microorganism is responsible for the infection.

Methods

We prospectively analysed infants admitted for spondylodiscitis, considering above all the results of PCR realized in oropharyngeal swabs and in blood samples.

Results

Four of the 29 performed K. kingae-specific real-time PCR assay in blood were positive (13.8%), whereas 28 of the 32 K. kingae-specific real-time PCR assay realized on throat swabs were positive (87.5%).

Conclusions

This study demonstrates that performing oropharyngeal swab PCR is able to detect K. kingae in almost 90% of the toddlers with confirmed spondylodiscitis. That provides strong arguments for the hypothesis that K. kingae should be considered as the main aetiological pathogen to suspect in children between 6 and 48 months old with spondylodiscitis. Finally, it seems to us reasonable that oropharyngeal swab may become an early decision-making tool for the indirect identification of K. kingae in spondylodiscitis.

Delayed diagnosis of osteodiscitis in an adolescent athlete: a case report

BACKGROUND

Vertebral osteomyelitis (OM) is an infectious condition of bone caused by an infecting organism, most commonly Staphylococcus aureus (S. aureus). Though rare in adolescents, it is important to remember that this population has vascularized intervertebral discs prior to skeletal maturity and, therefore, is more susceptible to an osteodiscitis infection.

PURPOSE

To determine the possible factors that lead to a delayed diagnosis of osteodiscitis compared to an early diagnosis in an adolescent athlete.

SUMMARY

This case provides a unique example of osteodiscitis in an adolescent rowing athlete where an infected heel blister was the only indication toward a diagnosis. Early diagnosis and successful management of osteodiscitis are dependent on recognizing constitutional and non-constitutional signs and symptoms of infection.

CLINICAL RELEVANCE

In sport, when skin barriers may be compromised more readily, the risk of infection should be considered in the differential diagnosis of unprovoked back pain.

Pyogenic and Non-Pyogenic Spinal Infections: Diagnosis and Treatment

Spinal infection (SI) is an infection of vertebral bodies, intervening disc, and/or adjoining para-spinal tissue. It represents less than 10 % of all skeletal infections. There are numerous factors that predispose to developing a SI. Due to the low specificity of signs, delayed diagnosis is common. Hence, SI may be associated with poor outcomes. Diagnosis of SI must be supported by clinicopathological and radiological findings. MRI is a reliable modality of choice. Treatment options vary according to the site of the infection, disease progression, neurology, presence of instability, and general condition of the subject. Conservative treatment (orthosis/ bed-rest + antibiotics) is recommended during the early course with no/ lesser degree of neurological involvement and to medically unfit patients. Nevertheless, when conservative measures alone fail, surgical interventions must be considered. The use of concomitant antimicrobial drugs intravenously during initial duration followed by oral administration is a necessity. Controversies exist regarding the optimal duration of antimicrobial therapy, yet never given less than six weeks. Heterogeneity in clinical picture and associated co-morbidities with a range of treatment modalities are available; however, a common applicable guideline for SI does not exist. Managing SI must be tailored on a case-to-case basis.

An unusual case of infective spondylodiscitis caused by Campylobacter fetus subsp. fetus: molecular characterization by whole-genome sequencing

Spondylodiscitis is an infectious inflammation that affects the intervertebral disc and adjacent structures. Treating infective spondylodiscitis is often challenging due to the lack of specific symptoms. Here we present an unusual case of infective spondylodiscitis caused by Campylobacter fetus subsp. fetus.

Cervical osteomyelitis and soft tissue polymicrobial abscess in an immunocompetent 16-year-old patient

A 16-year-old man was hospitalised with a painful space-occupying lesion in his posterior neck involving muscles, soft tissues, C1 cervical vertebra and vital cervical blood vessels. The true-cut biopsy showed inflammatory tissue. The microbiological analysis, which combined classical bacteriological and molecular methods, yielded at least four different anaerobic species. The patient was treated successfully with a prolonged course of ceftriaxone and metronidazole.

The Diagnosis and Management of Pediatric Spine Infections

The management of pediatric spine infections requires a multidisciplinary approach that includes orthopedic surgeons, infectious disease specialists, interventional radiologists, and others. The prevalence of the disease has increased in frequency, virulence, and degree of soft tissue involvement over the past several years; there has also been a resurgence of some types of infections, such as tuberculosis, fungal, and viral pathogens. The diagnosis can often be reached with a detailed history, physical examination, laboratory tests, and imaging studies. Pathologies mimicking infection require a more invasive approach for diagnosis, including core or open biopsy. The treatment of discitis, spondylodiscitis, vertebral osteomyelitis, spinal epidural, and intramedullary abscesses in children is at times complex, and although many infections can be treated non-surgically with antibiotic therapy, some more extensive infections require surgical management. A timely diagnosis is important as it allows the initiation of the appropriate antimicrobial therapy and would decrease the complexity of the subsequent surgical intervention.

Infectious spondylodiscitis and kyphosis correction in an infant: a case report

BACKGROUND

Neonatal infectious spondylodiscitis is a rare bony infection with atypical clinical presentation and non-specific systemic symptoms. Diagnosis and treatment are often delayed resulting in vertebral destruction and severe complications. We retrospectively reviewed the case of an infant with infectious spondylodiscitis resulting in T12 body destruction and marked angular kyphosis.

CASE-REPORT

A 4-week-old infant developed an infectious spondylodiscitis resulting in destruction of the T12 vertebral body and involvement of disc between T12 and L1. At 6 months of age, X-ray showed a marked thoracolumbar angular kyphosis above 50 Cobb degrees. Therefore, the patient underwent single time surgery with double anterior and posterior approach. At 9 years follow up, clinical and radiological findings show a stable correction with good aesthetic appearance.

CONCLUSION

Neonatal spondylodiscitis could lead to marked kyphosis similar to the congenital one. Since treatment with casts and tutors is often inefficacious, prompt surgery should be considered. The double anterior and posterior approach is the best option in this condition.

Septic Arthritis of Facet Joint in Children: A Systematic Review and a 10-year Consecutive Case Series

BACKGROUND

Due to the low resolution of historical imaging technologies, descriptions of Septic Arthritis of Facet Joint (SAFJ) in children are scarce, though severe cases are known. We first aimed to estimate the incidence rate of SAFJ in children; we further aimed to specify SAFJ clinical, imaging and laboratory findings, and identify avenues for appropriate management.

METHODS

A 10-year consecutive SAFJ case series using our imaging center database combined with a 50-year systematic review of literature cases.

RESULTS

The mean ± SD incidence of pediatric SAFJ was 0.23 ± 0.4/100,000 children-years. The key symptoms were potty refusal (in toddlers) or painful sitting (78%) and lateralized signs (paravertebral tenderness and/or swelling, 88%). SAFJ diagnosis and extension were obtained using magnetic resonance imaging (MRI) (94%), and found an epidural extension in 8/16 cases. The mean duration of antibiotic treatment was 5.1 weeks. The compliance with guidelines was 79% for empiric and 62% for targeted antibiotic therapies.

CONCLUSIONS

SAFJ incidence in children is much greater than expected from the literature. Half of cases were complicated by an epidural infection. Simple clinical symptoms detected as early as the bedside allow a strong suspicion of SAFJ, justifying the use of a first-line MRI to confirm the diagnosis and precisely describe the extension. Focusing on simple clinical signs is key to justify the transfer of a child or the shortening of the delay to obtain an MRI. However, as MRI availability increases in most Western countries, and the capacity for diagnosis increases, the awareness of SAFJ must be spread to avoid missed cases.

A Case of Osteodiscitis in a Preschool-Aged Child

Infectious discitis and osteodiscitis in children are rare. The usual age of occurrence is between two and five years. The diagnosis is most often delayed due to mild presenting symptoms.

We present the case of a five and half year old child who presented with progressively worsening lower back pain over a period of two weeks, which was made worse with bending forward. He did not have fever, pain in his lower extremities, or any other accompanying symptoms. He did not have a history of recent illnesses or trauma to the lower back. The laboratory work revealed an elevated erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP), and rest of the parameters were within normal limits. CT scan of his spine showed findings of well-defined defects on the endplates of L4-L5 with prevertebral soft tissue thickening. MRI with and without contrast of the spine confirmed the findings and detected mild focal erosive changes at the opposing endplates of L4-L5 with disc space narrowing, thin fluid along the anterior margin of the disc, and shallow disc bulging, which were consistent with osteodiscitis.

A conservative approach with intravenous antibiotics followed by a switch to oral antibiotics was undertaken with good clinical recovery.

Treatment strategy for osteodiscitis in children is generally antibiotic therapy. Prognosis in children is good. In some cases based on the pain severity, other measures such as bed rest, analgesics, and casting for immobilization may be required. Biopsy tends to be reserved in uncertain cases or in those that have poor response to pain control measures and antibiotics.

Spondylodiscitis in Children: A Retrospective Study and Comparison With Non-vertebral Osteomyelitis

Objectives: The aim of this study is to provide new data on pediatrics spondylodiscitis for an optimal clinical management of this site-specific osteomyelitis. Methods: We reported 48 cases of pediatric spondylodiscitis and made three comparisons between: (1) tubercular and non-tubercular cases; (2) patients aged more or less than 5 years; (3) children with spondylodiscitis and 62 controls with non-vertebral osteomyelitis. Results: A higher rate of sequelae was reported in patients with tubercular spondylodiscitis, but no significant differences were noted at the cut-off of 5 years of age. Compared to non-vertebral osteomyelitis, pediatric spondylodiscitis affects younger children of both genders, usually presenting with afebrile back pain, and requiring longer time to admission, hospitalization, and antibiotic therapy. Conclusion: Pediatric spondylodiscitis is an insidious disease with a non-specific presentation in childhood and peculiarities of its own. However, when clinical remission is obtained by an early start of broad-spectrum antibiotics, prolonging the therapy does not improve, nor worsens, the outcome. Surgical management is mandatory in case of vertebral instability and neurological signs but can be avoided when the infection is promptly treated with antibiotic therapy.

Characteristics, Management and Outcomes of Spondylodiscitis in Children: A Systematic Review

Spondylodiscitis (SD) is the concurrent infection of the intervertebral disc and the adjacent vertebral bodies. Currently, there is a substantial lack of structured reviews about this topic. The aim of this study was to systematically review the available literature in order to determine the main features of pediatric SD. A systematic search of MEDLINE database was performed, according to the PRISMA guideline recommendations. Clinical features, laboratory data, radiological signs, treatments strategies, and outcomes were summarized. Studies’ quality assessments were performed using the JBI Critical Appraisal Checklists. A total of 35 retrospective studies were analyzed and 340 children were identified. The most frequently affected age class was 0.5–4 years. The most affected site was the lumbar spine. The most commonly reported symptoms were back pain (37.97%) and refusal to walk/to stand/to sit (49.79%). The most frequently identified pathogen was Staphylococcus aureus (n = 33). The most used antibiotics were third generation cephalosporins. The intravenous therapy duration range was 1–25 weeks, the oral therapy duration range was 5 days–36 months. Surgery was used in 5.88% of children. In 29 cases clinical sequelae were documented. This study provides the main features of pediatric SD; it also emphasizes the significant gaps in the literature regarding this topic.

Back Pain in Children and Adolescents

Back pain has long been considered an uncommon complaint in the pediatric population. When present, teaching had been that pediatric back pain almost always has a diagnosable cause, many of which are progressive and potentially debilitating. Recent evidence has suggested that pediatric back pain is not only more common than once thought but also, within certain populations, benign and idiopathic. This, in turn, places an increasing amount of pressure on pediatricians to accurately assess and manage their patients presenting with complaints of back pain. The aim of this article is to serve as a review of the current literature on pediatric back pain. The article reviews the epidemiology, basic anatomy, and important elements of a history and examination, which should be considered when a child presents complaining of back pain. Last, a common differential diagnosis with evaluation and management is also given to help guide pediatricians through their medical decision making.

Vertebral osteomyelitis in an adolescent girl

We present a case of a 13-year-old girl with vertebral osteomyelitis. She had been experiencing lower back pain for 5 weeks, initially thought to be due to muscular causes. The blood culture showed no bacterial growth, and she was treated empirically only with antibiotics. She responded well to treatment and required no surgical intervention. Vertebral osteomyelitis should be in the differential diagnosis in an adolescent who complains of worsening lower back pain. Early diagnosis and treatment are essential in avoiding complications.

Paediatric spondylodiscitis: a 10-year single institution experience in management and clinical outcomes

PURPOSE

Discitis in the paediatric population poses diagnostic challenges due to non-specific presenting symptoms and difficulty with expressing pain in non-communicating children. Discitis remains a relatively rare condition in the paediatric population and previous reports are limited to small cohorts. In this article, we report our experience in management of discitis over a 10-year period and review the literature on this topic.

METHODS

We retrospectively reviewed cases of paediatric discitis/spondylodiscitis over a 10-year period between 2008 and 2018 managed in our regional paediatric neurosurgery unit. Relevant demographic information, microbiological data, blood investigation profile, antibiotic treatment duration and clinical outcomes were interrogated from clinical notes and electronic databases and further analysed.

RESULTS

Overall, 21 cases of paediatric discitis were identified from year 2008 to 2018 with a female to male ratio of 1.3:1. The mean age at presentation was 4.3 years (range 1 to 15 years). Overall, there were 19 cases of lumbosacral/lumbar, 1 thoracic and 1 cervical discitis. The mean duration of follow-up was 20 months (range 6 to 69 months). The most common presenting features were back pain and refusal to walk/sit or weight bear. Erythrocyte sedimentation rate (ESR) was found to be more sensitive than C-reactive protein (CRP) (sensitivity 78% versus 38%) in our cohort. Computer tomography (CT)-guided biopsy was performed in five cases and only one of these was positive (20%). All patients were treated with intravenous antibiotics with resolution of discitis.

CONCLUSIONS

Presentation of discitis in children can be non-specific and requires high index of suspicion. CT-guided biopsy in our cohort revealed a low rate of positive cultures. Despite negative blood cultures and CT-guided biopsy results, empirical intravenous antibiotics were effective in treating discitis successfully. In our cohort, low yield of CT-guided biopsy does not support its use on each case and this may be reserved for cases resistant to antimicrobial therapy or concerns regarding other pathology mimicking infection. Better understanding and awareness of this condition and its pathophysiology can lead to timely imaging, diagnosis and treatment.

Osteoarticular infections in pediatrics

OBJECTIVE

To collect the most up-to-date information regarding pediatric osteoarticular infections, including the epidemiological and microbiological profiles, diagnosis, and treatment.

SOURCE OF DATA

A non-systematic review was performed on the search engines PubMed, SciELO, LILACS, and Google Scholar, using the keywords "bone and joint infection", "children", "pediatric", "osteomyelitis", "septic arthritis" and "spondylodiscitis" over the last ten years. The most relevant articles were selected by the authors to constitute the database.

SYNTHESIS OF DATA

Osteoarticular infections are still a major cause of morbidity in pediatrics. Their main etiology is Staphylococcus aureus, but there has been an increase in the detection of Kingella kingae, especially through molecular methods. Microbiological identification allows treatment direction, while evidence of inflammatory activity assists in treatment follow-up. Imaging tests are especially useful in the initial diagnosis of infections. Empirical treatment should include coverage for the main microorganisms according to the age and clinical conditions of the patient, while considering the local resistance profile. Surgical procedures can be indicated for diagnosis, focus control, and function preservation. Acute complications include sepsis, deep venous thrombosis, and pulmonary embolism. Deaths are rare. Late complications are uncommon but may lead to deformities that compromise motor development.

CONCLUSION

A correct and early diagnosis, prompt implementation of adequate antimicrobial therapy, and focus control, when indicated, are critical to a better prognosis.

MRI Findings of Infectious Sacroiliitis in Children: Are There Age-Dependent Differences?

OBJECTIVE. The purpose of this study was to investigate the prevalence of various MRI findings of infectious sacroiliitis in children and with respect to age. MATERIALS AND METHODS. This institutional review board-approved, HIPAA-compliant retrospective study included children with infectious sacroiliitis who underwent MRI examination between December 1, 2002, and September 30, 2018. Two radiologists blinded to the clinical outcome reviewed each MRI examination to determine the presence or absence of periarticular marrow edema, erosions, capsular bulge, extracapsular edema, and soft-tissue abscess. If available, pelvic radiographs were retrospectively reviewed by a third radiologist. Mann-Whitney U, chi-square, and Fisher exact tests were used to compare MRI findings between younger and older children. RESULTS. The study included 40 children (19 boys and 21 girls; mean age, 8.6 ± 6.2 [SD] years). Sixteen children presented at or below 5 years of age (mean age, 1.7 ± 1.4 years) and 24 children presented at or above 8 years of age (mean age, 13.3 + 2.6 years). Periarticular marrow edema and anterior extracapsular edema were present in all children. Posterior extracapsular edema (p = 0.01) was statistically significantly more common in younger children when compared with older children. There was no significant difference in the presence of erosions (p = 0.60), capsule bulge (p = 0.63), or abscess (p = 0.34) between younger and older children. Pelvic radiographs (n = 28; obtained 1.6 days ± 1.7 from MRI) allowed the correct identification of the abnormal joint in only 50% of the studies. CONCLUSION. MRI findings of infectious sacroiliitis are common in children of all ages with posterior extracapsular edema statistically significantly more prevalent in younger children.

THORACOLUMBAR SPONDYLODISCITIS AND THE SURGICAL APPROACH: A RETROSPECTIVE ANALYSIS

ABSTRACT Objectives: Spondylodiscitis is a rare, late diagnosis disease. In view of the morbidity and mortality associated to the delayed diagnosis and increase of the cases in the last years, this study was carried out in order to evaluate the operated cases and improve the management of these patients.. Methods: Retrospective longitudinal study involving 1440 patients submitted to a surgical procedure in the thoracolumbar spine from January 2015 to March 2017, including 49 cases operated by spondylodiscitis. Results: Results: Severe complications requiring ICU admission (pulmonary or urinary tract sepsis and DVT) were observed in 7 (8.5%) individuals, whose mean hospital stay was 35 days (10-170 days) [p=0.006]. Conclusions: Conclusion: A correlation between the number of days hospitalized and the increase in the rate of complications was found. Early surgery by the anterior approach and posterior fixation after 2 weeks is the treatment of choice, with low morbidity and short period of hospitalization. Level of Evidence III; Retrospective Study.

Unilateral percutaneous endoscopic debridement and drainage for lumbar infectious spondylitis

BACKGROUND

The treatment of lumbar infectious spondylitis is controversial. In this study, we attempted to demonstrate that unilateral percutaneous endoscopic debridement with physiologic saline and negative pressure drainage postoperatively may achieve a satisfactory result in lumbar infectious spondylitis.

METHODS

We retrospectively analyzed 17 patients with lumbar infectious spondylitis who underwent percutaneous endoscopic debridement and drainage (PEDD) through a posterolateral transforaminal approach. Each biopsy specimen was submitted without delay after surgery and examined for microorganisms and evaluated histopathologically. Patients were assessed by careful physical examination, MacNab criteria, Oswestry Disability Index (ODI), visual analog scale (VAS), regular serological tests, imaging studies for clinical function, and patient satisfaction.

RESULTS

Of the 17 patients, 14 (82.4%) had satisfactory relief of their back pain according to MacNab criteria at 1 week after PEDD. Three patients (17.6%) who had advanced infections with multilevel involvement and paraspinal abscesses underwent anterior debridement and autograft interbody fusion with instrumentation within 2 weeks. However, there were no other severe surgery-related complications. Causative bacteria were identified in most cases, and Staphylococcus aureus was the most prevalent strain.

CONCLUSIONS

Unilateral PEDD with physiological saline or empirical antibiotics did not disrupt lumbar stability and avoided the important intraspinal structures such as the dural sac and nerve roots. It not only had a high rate of identification of the causative pathogen, but also provided effective infection control and pain relief. PEDD may be a useful technique for treatment of lumbar infectious spondylodiscitis patients who have no severe deformities and are unable to undergo the conventional anterior surgery due to poor health or advanced age.

An 11-Year-Old Male With Vertebral Osteomyelitis and a Paraspinal Abscess

We report the case of an 11-year-old immunocompetent patient presenting with a 2-week history of upper back pain, diagnosed with thoracic vertebral osteomyelitis and a paraspinal abscess caused by Bartonella henselae. He was treated with gentamicin and doxycycline followed by oral rifampicin and doxycycline with favorable outcome.

Pediatric spinal infections-a review of non-tuberculous infections

Pediatric spinal infection includes spinal epidural abscess, spondylodiscitis and intradural (extramedullary and intramedullary) spinal infections. However, these entities are extremely rare and no clear guidelines exist for their management. Pertinent literature was searched and a detailed narrative review of this topic is presented.

National epidemiological study reveals longer paediatric bone and joint infection stays for infants and in general hospitals

AIM

Published studies have suggested that two to five days of intravenous treatment could effectively treat paediatric bone and joint infections (PBJI), allowing a faster discharge. This study analysed the factors associated with PBJI hospital stays lasting longer than five days using the French National Hospital Discharge Database.

METHODS

We selected children under 15 years hospitalised in 2013 with haematogenous PBJIs using a validated French algorithm based on specific diagnosis and surgical procedure codes. Risk factors for stays of more than five days were analysed using logistic regression.

RESULTS

In 2013, 2717 children were hospitalised for PBJI, with 49% staying more than five days. The overall incidence of 22 per 100 000, was highest in males and toddlers. The main causes were septic arthritis (50%) and osteomyelitis (46%) and 50% of the pathogens were Staphylococci. The odd ratios for stays of five days or more were infancy, coded bacteria and sickle cell disease (7.0), having spondylodiscitis rather than septic arthritis (2.2) and being hospitalised in a general hospital rather than a teaching hospital (1.6).

CONCLUSION

Half of the hospital stays exceeded five days, despite scientific evidence supporting a shorter intravenous antibiotherapy regimen. Greater knowledge and widespread use of short treatment regimens are needed.

Imaging of Kingella kingae musculoskeletal infections in children: a series of 5 cases

PURPOSE

Kingella kingae musculoskeletal infections continue to be under-diagnosed and there remains a paucity of literature on its imaging features. The purpose of this manuscript is to review the imaging, clinical, and laboratory findings of microbiology-proven K. kingae infections.

MATERIALS AND METHODS

A retrospective review of musculoskeletal infections between January 1, 2013 and Dec 31, 2016 yielded 134 patients from whom 5 patients had confirmed K. kingae infections (3 boys and 2 girls, mean age of 16 months, range 9-38 months). Picture archiving and communication system and electronic medical records were reviewed.

RESULTS

At presentation, none of the patients had a fever and not all patients had abnormal inflammatory markers. Three patients had septic arthritis (2 knee and 1 sternomanubrial joints), one had epiphyseal osteomyelitis, and one had lumbar spondylodiscitis. The case of epiphyseal osteomyelitis of the distal humerus also had elbow joint involvement. A combination of radiography (n = 4), ultrasound (n = 2), and magnetic resonance (MR) imaging (n = 5) were performed. Prominent synovial thickening was observed for both knee and elbow joints and extensive regional myositis for all except for the patient with sternomanubrial joint infection. The diagnosis of K. kingae infection resulted in a change in the antibiotic regimen in 80% of the patients.

CONCLUSION

Disproportionate synovial thickening, prominent peri-articular myositis, and/or characteristic sites of involvement demonstrating imaging features of infection or inflammation in a young child with mild infectious symptoms and elevated inflammatory markers should invoke the possibility of an underlying K. kingae infection.

Spondylodiscitis in Paediatric Patients: The Importance of Early Diagnosis and Prolonged Therapy

Background: Spondylodiscitis (SD), the concurrent infection of a vertebral disc and the adjacent vertebral bodies, is a very severe disease that can lead to death or cause spinal deformities, segmental instabilities, and chronic pain, which significantly reduces the quality of life for affected patients. Early diagnosis and treatment are essential in order to reduce the risk of negative outcomes. The two cases of SD that are described in this paper might be useful for informing paediatric approaches to children with SD. Case presentation: The cases that are reported here are about two children of approximately 2 and 3 years of age, in whom SD involving the L4⁻L5 and L3⁻L4 interspaces, had a subacute or chronic course. The clinical manifestations were mild, fever was absent, and the lumbar pain lasted for a long time and was the predominant symptom. Moreover, laboratory tests were in the normal range or only slightly abnormal, as were the standard radiographs of the lumbar spine. In both of the cases, SD confirmation was obtained through magnetic resonance imaging (MRI) and MRI was also used to evaluate the response to therapy. In both of our patients, tuberculosis was excluded based on tuberculin skin testing and the Quantiferon TBgold tests being negative. This finding led to the prescription of a broad-spectrum antibiotic therapy, including a drug that was potentially effective against Staphylococcus aureus (Sa). The strict monitoring of the spinal damage with MRI avoided the need for aspirations or biopsies; invasive procedures that are ethically acceptable in pediatric age only in a few selected cases, when the empirical antibiotic is associated with a worsening of spinal damage; or the vertebral osteomyelitis lesion mimics a tumoral lesion. Conclusions: Although rare, SD represents an important disease in children. In toddlers and preschool children, it can have a subacute or chronic course, in which only back pain, irritability, and walking difficulties are the signs and symptoms of the disease. MRI remains the best method for confirming the diagnosis and for evaluating therapy efficacy. Antibiotics are the drugs of choice. Although the duration has not been established, antibiotics should be administered for several weeks.

Spinal infections in children: a multicentre retrospective study

Aims

This multicentre, retrospective study aimed to improve our knowledge of primary pyogenic spinal infections in children by analyzing a large consecutive case series.

Patients and Methods

The medical records of children with such an infection, treated at four tertiary institutions between 2004 and 2014, were analyzed retrospectively. Epidemiological, clinical, paraclinical, radiological, and microbiological data were evaluated. There were 103 children, of whom 79 (76.7%) were aged between six months and four years.

Results

We confirmed a significant male predominance in the incidence of primary pyogenic spinal infections in children (65%). The lumbar spine was the most commonly affected region, and 27 infections (26.2%) occurred at L4/5. The white blood cell count was normal in 61 children (59%), and the CRP level was normal in 43 (42%). Blood cultures were performed in 95 children, and were positive in eight (8%). A total of 20 children underwent culture of biopsy or aspiration material, which was positive in eight (40%). Methicillin-sensitive Staphylococcus aureus (MSSA) and Kingella ( K.) kingae were the most frequently isolated pathogens.

Conclusion

MSSA remains the most frequently isolated pathogen in children with primary pyogenic infection of the spine, but K. kingae should be considered as an important pathogen in children aged between six months and four years. Therefore, an empirical protocol for antibiotic treatment should be used, with consideration being made for the triphasic age distribution and specific bacteriological aetiology. In the near future, the results of polymerase chain reaction assay on throat swabs may allow the indirect identification of K. kingae spondylodiscitis in young children and thus aid early treatment. However, these preliminary results require validation by other prospective multicentre studies. Cite this article: Bone Joint J 2018;100-B:542-8.

Delayed osteomyelitis resulting from an extension injury of the cervical spine: case report

Osteomyelitis of the cervical spine is an exceedingly rare lesion in pediatric practice and is caused by a variety of mechanisms. The authors present a case in which cervical osteomyelitis presented in a delayed manner after the patient experienced a stable cervical extension injury at the C4-5 level. On review of the original images, the authors noted a likely perforation in the retropharyngeal space. This case highlights the risk of retropharyngeal injury in cervical trauma, with the seldom-seen complication of osteomyelitis as a result.