Papel de la radiología intervencionista en el diagnóstico y tratamiento de la columna vertebral dolorosa

Novel Magnetic Resonance Imaging Tools for the Diagnosis of Degenerative Disc Disease: A Narrative Review

Low back pain (LBP) is one of the leading causes of disability worldwide, with a significant socioeconomic burden on healthcare systems. It is mainly caused by degenerative disc disease (DDD), a progressive, chronic, and age-related process. With its capacity to accurately characterize intervertebral disc (IVD) and spinal morphology, magnetic resonance imaging (MRI) has been established as one of the most valuable tools in diagnosing DDD. However, existing technology cannot detect subtle changes in IVD tissue composition and cell metabolism. In this review, we summarized the state of the art regarding innovative quantitative MRI modalities that have shown the capacity to discriminate and quantify changes in matrix composition and integrity, as well as biomechanical changes in the early stages of DDD. Validation and implementation of this new technology in the clinical setting will allow for an early diagnosis of DDD and ideally guide conservative and regenerative treatments that may prevent the progression of the degenerative process rather than intervene at the latest stages of the disease.

Spondylodiscitis

Spondylodiscitis is an infection of the spine that has been known since ancient times. Its incidence is rising, due to the increases in life expectancy and debilitating conditions. Its age distribution is bimodal, affecting persons younger than 20 years of age or persons aged 50-70 years. According to its origin, it is classified as pyogenic, granulomatous or parasitic, though the first form is the most common, usually caused by Staphylococcus aureus or Escherichia coli. The clinical presentation is insidious, resulting in a delayed diagnosis, particularly in tuberculous spondylodiscitis. The initial onset usually involves inflammatory back pain, though the disease may course with fever, asthenia and neurological deficit, these being the most severe complications. Diagnosis is based on clinical, radiological, laboratory, microbiological and histopathological data. Magnetic resonance imaging is the technique of choice for the diagnosis of spondylodiscitis. The differential diagnosis involves, among other conditions, intervertebral erosive osteochondrosis, tumour, axial spondyloarthropathy, haemodialysis spondyloarthropathy, Modic type 1 endplate changes and Charcot's axial neuroarthropathy. Treatment is based on eliminating the infection with antibiotics, preventing spinal instability with vertebral fixation, and ample debridement of infected tissue to obtain samples for analysis.

Spinal interventions

We review the state of the art in imaging-guided percutaneous interventional procedures used to diagnose and/or treat the diverse causes of back pain. These procedures can be used for diagnosis, treatment, or both. They are focused on the vertebral bodies, the facet joints, the intervertebral discs, and the nerve structures.