Modic changes are pathological changes in the bones of the spine, the vertebrae. These changes are situated in both the body of the vertebrae and in the end plate of the neighboring disc. Clinically, Modic Changes are often associated with constant lower back pain during the day, with peak pain occurring during the night and in the morning, coupled with back stiffness. [1] [2]
Modic changes have been observed in approximately 6% of the general adult population regardless of ethnicity. [3] [4] [5] [6] Modic changes are rare in children and young adults. From the age of 25 to 40 years, there is a steep increase in their prevalence, which levels out about 40 years of age and is stable until 80+ years. [7] Modic changes are estimated to affect approximately 349 million of the adult population worldwide.[July 2021 est.] [8]
Modic changes is a descriptive term used by radiologists in MRI evaluations. Conventional treatment including physiotherapy, chiropractic, acupuncture, and exercise for back pain, are not effective in treating Modic changes. Conversely, long term antibiotic treatment has been shown to be an effective treatment if done effectively.
Several studies have shown a relationship between Modic changes in the spinal vertebrae and pain in the lower back.
The last decade of studies on Modic changes have shown that Modic changes are associated with many treatment-resistant pain episodes and may result in patients entering a state of chronic low back pain. On average, individuals with Modic changes have had chronic pain for longer than individuals suffering from non-Modic changes back pain. [9] [10]
Peak pain tends to occur late at night and in the morning. Late-night pain often results in poor and interrupted sleep. [11] [12]
Many individuals suffering from Modic changes, tend to have a high degree of morning stiffness in the back. The duration of the stiffness in the morning also tends to be longer compared to individuals with no Modic changes. [13] [14]
Individuals with Modic changes experience exacerbation of pain when performing a hyperextension of the back. [15] [16] A hyperextension of the back is the equivalent of performing an excessive backward bending of the back beyond its natural position.
Modic changes are a non-specific pathoanatomical marker observed on an MRI scan. For example, high blood pressure or high body temperature can be markers of several diseases. In 2008 the first hypothesis suggesting three possible pathogenetic reasons for Modic changes was published, a bacterial, a mechanical, and a rheumatological cause.
The bacterial cause is where the development of Modic change is due to an infection in the adjacent disc. A tear in the outer fibers of a disc may well initiate this infection. A disc herniation will result in a new local capillarization around the extruded material as the body attempts to remove the extruded material and inflammation with macrophages which are present in abundance. [17] [18] [19] [20] [21] The mucous membrane of the gums is slightly damaged during ordinary tooth brushing, and anaerobic bacteria Propionibacterium acnes type 2 from the mouth enters the bloodstream. [22] [23] [24]
The anaerobic bacteria can enter the disc through the breach, causing a low virulent and slowly developing infection. Since the disc is an avascular structure, it is an ideal environment for the growth of anaerobic bacteria. Propionibacterium acnes bacteria secrete propionic acid, which can dissolve fatty bone marrow and bone. Therefore, it was hypothesized that diffusion of propionic acid from the disc into the vertebrae results in bone oedema, i.e. Modic changes.
The first study by Stirling and Lambert found Propionibacterium acnes in the extruded disc material in patients undergoing surgery [25] inspired the bacterial theory.[ citation needed ] The discovery has led to many studies trying to identify bacteria in the disc material. The methods used in the studies to determine the presence of bacteria vary significantly from very primitive methods such as simple culturing to highly sophisticated methods, where independent research groups utilizing staining techniques with fluorescence in situ hybridization were able to visualize bacteria from an ongoing infection as well as associated inflammatory cells. These studies were carried out in real time and therefore demonstrated an ongoing bacterial infection. [26] [27] The results of these studies have been reproduced in several systematic reviews, concluding that 30-34 % of patients with a disc herniation have bacteria in the extruded disc material. [28] [29] [30]
Mechanical Modic changes might initially reflect bleeding, oedema, and vascularization following trauma or oedema associated with the repair process after micro-fractures within the endplate and the vertebral bone. Another possibility is that the toxic nucleus tissue (from the center of the discs) invades the endplate and vertebral bone through fractures in the endplates and causes an inflammatory response.[ citation needed ] It may be nucleus material entering the vertebrae, but Crock et al. also suggested that after a disc is damaged, irritating substances are produced, draining into the vertebral body, and causing an autoimmune reaction. [31] This mechanical theory is supported by the fact that histological findings of the Modic Changes demonstrate disruption of the endplates with evidence of chronic inflammation. This in turn suggests that this erosion weakens the bone matrix, giving rise to stress fractures and consequent oedema. The universal reaction of bone under stress is seen in fractures wherever they occur and is always associated with pain.
Modic changes have been observed in approximately 6% of the general adult population regardless of ethnicity. [32] [33] [34] [35] Modic changes are rare in children and young adults. From the age of 25 to 40 years, there is a steep increase in their prevalence, which levels out about 40 years of age and is stable until 80+ years. [36] Modic changes are estimated to affect approximately 349 million of the adult population worldwide.[July 2021 est.] [37]
The natural development of Modic changes was observed in an extensive study of almost 800 English twins. These twins had an initial MRI diagnosing them with Modic changes and another MRI 10 years later. No treatment was given, thus only observing the development of Modic changes. The study showed that only 3.5% of the people who had Modic changes initially demonstrated that they had disappeared after ten years. Unfortunately, most of the Modic changes do not resolve spontaneously. [38]
Modic changes are observed on MRI (magnetic resonance imaging) scans. Bone oedema in other bones is not categorized into different types, but Dr. Michael Modic was the first to classify, describe and define Modic changes into three types. The different types were first described and defined in 1988. [39]
Normal bone contains internal scaffolding, called trabeculae. Red bone marrow, which produces blood cells, is located in the hollows between the trabeculae.
The proof of an ongoing pathologic process in a Modic change has been documented by SPECT analysis [Isotope scanning using single positron emission computerized tomography], combined with high-resolution CT imaging. This method has shown high metabolic activity in 96.1% of endplates with Modic change type I and 56% with Modic change type 2. [50]
Modic changes have been observed in dogs. [51]
The most commonly recommended treatment for long-lasting pain in the lower back are exercises and fitness training usually under the supervision of a qualified clinician. This treatment does help the vast majority of back pain patients but does not have a pain-relieving effect on Modic changes or pain from Modic changes. [52]
Modic changes are also an independent predictive marker for poor clinical outcomes, [53] [54] [55] [56] meaning that conventional treatments such as strength training, manipulations, physiotherapy, and surgery do not reduce the pain of individuals with Modic changes.
In the case that body tissue is infected with bacteria, this will, in most cases, lead to the patient being given treatment with antibiotics, which in most cases will cure the infection. A research group led by Gilligan has presented a description of how they hypothesize 4 stages, from infection of the discus to developing Modic changes in the vertebrae. [57]
The first study to investigate the efficacy of long-term antibiotic treatment for patients with Modic changes was published in 2013. [58] This clinically randomized controlled trial showed this treatment to be a highly efficacious treatment for this subgroup of patients with chronic low back pain and Modic changes. Since then, in total, 10 studies have been conducted evaluating the effect of antibiotic treatment in patients with chronic low back pain and Modic changes. Two clinically controlled studies with long-term follow-up and one clinically controlled study with short-term follow-up have been performed. [59] [60] [61] [62] In addition, seven cohort studies have been completed, of which there are follow-up results in the six of the studies. [63] [64] [65] [66]
Differences in the efficacy of antibiotics in treating Modic changes with antibiotics warrants further investigation of optimal treatment protocol with antibiotics and diagnosis. Treatment is generally not offered to individuals with modic changes in the healthcare system due to the lengthy process between new scientific knowledge and its acceptance and optimal application in the healthcare system.
Scoliosis is a condition in which a person's spine has an abnormal curve. The curve is usually S- or C-shaped over three dimensions. In some, the degree of curve is stable, while in others, it increases over time. Mild scoliosis does not typically cause problems, but more severe cases can affect breathing and movement. Pain is usually present in adults, and can worsen with age. As the condition progresses, it may impact a person's life and hence, can also be considered a disability.
Back pain is pain felt in the back. It may be classified as neck pain (cervical), middle back pain (thoracic), lower back pain (lumbar) or coccydynia based on the segment affected. The lumbar area is the most common area affected. An episode of back pain may be acute, subacute or chronic depending on the duration. The pain may be characterized as a dull ache, shooting or piercing pain or a burning sensation. Discomfort can radiate to the arms and hands as well as the legs or feet, and may include numbness or weakness in the legs and arms.
An intervertebral disc lies between adjacent vertebrae in the vertebral column. Each disc forms a fibrocartilaginous joint, to allow slight movement of the vertebrae, to act as a ligament to hold the vertebrae together, and to function as a shock absorber for the spine.
Low back pain or lumbago is a common disorder involving the muscles, nerves, and bones of the back, in between the lower edge of the ribs and the lower fold of the buttocks. Pain can vary from a dull constant ache to a sudden sharp feeling. Low back pain may be classified by duration as acute, sub-chronic, or chronic. The condition may be further classified by the underlying cause as either mechanical, non-mechanical, or referred pain. The symptoms of low back pain usually improve within a few weeks from the time they start, with 40–90% of people recovered by six weeks.
Schmorl's nodes are protrusions of the nucleus pulposus of the intervertebral disc through the vertebral body endplate and into the adjacent vertebra.
Lumbar spinal stenosis (LSS) is a medical condition in which the spinal canal narrows and compresses the nerves and blood vessels at the level of the lumbar vertebrae. Spinal stenosis may also affect the cervical or thoracic region, in which case it is known as cervical spinal stenosis or thoracic spinal stenosis. Lumbar spinal stenosis can cause pain in the low back or buttocks, abnormal sensations, and the absence of sensation (numbness) in the legs, thighs, feet, or buttocks, or loss of bladder and bowel control.
A laminectomy is a surgical procedure that removes a portion of a vertebra called the lamina, which is the roof of the spinal canal. It is a major spine operation with residual scar tissue and may result in postlaminectomy syndrome. Depending on the problem, more conservative treatments may be viable.
Back injuries result from damage, wear, or trauma to the bones, muscles, or other tissues of the back. Common back injuries include sprains and strains, herniated discs, and fractured vertebrae. The lumbar spine is often the site of back pain. The area is susceptible because of its flexibility and the amount of body weight it regularly bears. It is estimated that low-back pain may affect as much as 80 to 90 percent of the general population in the United States.
Degenerative disc disease (DDD) is a medical condition typically brought on by the normal aging process in which there are anatomic changes and possibly a loss of function of one or more intervertebral discs of the spine. DDD can take place with or without symptoms, but is typically identified once symptoms arise. The root cause is thought to be loss of soluble proteins within the fluid contained in the disc with resultant reduction of the oncotic pressure, which in turn causes loss of fluid volume. Normal downward forces cause the affected disc to lose height, and the distance between vertebrae is reduced. The anulus fibrosus, the tough outer layers of a disc, also weakens. This loss of height causes laxity of the longitudinal ligaments, which may allow anterior, posterior, or lateral shifting of the vertebral bodies, causing facet joint malalignment and arthritis; scoliosis; cervical hyperlordosis; thoracic hyperkyphosis; lumbar hyperlordosis; narrowing of the space available for the spinal tract within the vertebra ; or narrowing of the space through which a spinal nerve exits with resultant inflammation and impingement of a spinal nerve, causing a radiculopathy.
Spondylolisthesis is the displacement of one spinal vertebra compared to another. While some medical dictionaries define spondylolisthesis specifically as the forward or anterior displacement of a vertebra over the vertebra inferior to it, it is often defined in medical textbooks as displacement in any direction. Spondylolisthesis is graded based upon the degree of slippage of one vertebral body relative to the subsequent adjacent vertebral body. Spondylolisthesis is classified as one of the six major etiologies: degenerative, traumatic, dysplastic, isthmic, pathologic, or post-surgical. Spondylolisthesis most commonly occurs in the lumbar spine, primarily at the L5-S1 level, with the L5 vertebral body anteriorly translating over the S1 vertebral body.
Cauda equina syndrome (CES) is a condition that occurs when the bundle of nerves below the end of the spinal cord known as the cauda equina is damaged. Signs and symptoms include low back pain, pain that radiates down the leg, numbness around the anus, and loss of bowel or bladder control. Onset may be rapid or gradual.
Traction is a set of mechanisms for straightening broken bones or relieving pressure on the spine and skeletal system. There are two types of traction: skin traction and skeletal traction. They are used in orthopedic medicine.
Spinal fusion, also called spondylodesis or spondylosyndesis, is a surgery performed by orthopaedic surgeons or neurosurgeons that joins two or more vertebrae. This procedure can be performed at any level in the spine and prevents any movement between the fused vertebrae. There are many types of spinal fusion and each technique involves using bone grafting—either from the patient (autograft), donor (allograft), or artificial bone substitutes—to help the bones heal together. Additional hardware is often used to hold the bones in place while the graft fuses the two vertebrae together. The placement of hardware can be guided by fluoroscopy, navigation systems, or robotics.
Failed back syndrome or post-laminectomy syndrome is a condition characterized by chronic pain following back surgeries. Many factors can contribute to the onset or development of FBS, including residual or recurrent spinal disc herniation, persistent post-operative pressure on a spinal nerve, altered joint mobility, joint hypermobility with instability, scar tissue (fibrosis), depression, anxiety, sleeplessness, spinal muscular deconditioning and even Cutibacterium acnes infection. An individual may be predisposed to the development of FBS due to systemic disorders such as diabetes, autoimmune disease and peripheral blood vessels (vascular) disease.
A spinal disc herniation is an injury to the intervertebral disc between two spinal vertebrae, usually caused by excessive strain or trauma to the spine. It may result in back pain, pain or sensation in different parts of the body, and physical disability. The most conclusive diagnostic tool for disc herniation is MRI, and treatment may range from painkillers to surgery. Protection from disc herniation is best provided by core strength and an awareness of body mechanics including good posture.
A compression fracture is a collapse of a vertebra. It may be due to trauma or due to a weakening of the vertebra. This weakening is seen in patients with osteoporosis or osteogenesis imperfecta, lytic lesions from metastatic or primary tumors, or infection. In healthy patients, it is most often seen in individuals suffering extreme vertical shocks, such as ejecting from an ejection seat. Seen in lateral views in plain x-ray films, compression fractures of the spine characteristically appear as wedge deformities, with greater loss of height anteriorly than posteriorly and intact pedicles in the anteroposterior view.
Artificial disc replacement (ADR), or total disc replacement (TDR), is a type of arthroplasty. It is a surgical procedure in which degenerated intervertebral discs in the spinal column are replaced with artificial disc implants in the lumbar (lower) or cervical (upper) spine. The procedure is used to treat chronic, severe low back pain and cervical pain resulting from degenerative disc disease. Disc replacement is also an alternative intervention for symptomatic disc herniation with associated arm and hand, or leg symptoms.
Chiropractors use their version of spinal manipulation as their primary treatment method, with non-chiropractic use of spinal manipulation gaining more study and attention in mainstream medicine in the 1980s. There is no evidence that chiropractic spinal adjustments are effective for any medical condition, with the possible exception of treatment for lower back pain. The safety of manipulation, particularly on the cervical spine has been debated. Adverse results, including strokes and deaths, are rare.
Claus Manniche is a Danish rheumatologist, Consultant and Professor. His main research interests are clinical databases in back pain and research methodology. He has authored more than 120 journal articles and co-authored several books.
Hanne Albert is a Danish physiotherapist with a Ph.D. in medical science. Her main research interest is in lower back pain and pelvic girdle pain. Albert's studies have revealed that bone œdema could be caused by a bacterial infection and treated with antibiotics.
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