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This study reported on the anamnesis, clinical and instrumental findings as well as therapy in a girl with discitis. The described diagnostic problems and course are characteristic of this frequently unrecognized disease, the cause of which has not yet been fully clarified. Diagnostic and therapeutic procedures suggested in the literature were critically evaluated.
The incidence of postoperative discitis in a series of almost 7500 surgical interventions covering a period of 15 years is reported. Ninety patients (1.2%) were found to be suffering from typical symptoms, which are described and discussed. It is pointed out that above all radicular pain diminished, while on the other hand severe pain occurred in the lumbar spine, caused by movement and vibration, accompanied by a usually sharp rise in ESR, up to values of 100/200 mm. It is pointed out that conventional tomography is the diagnostic tool of choice, diagnosis being possible as of approx. three weeks postoperatively. The social implications of this important complication are pointed out, in particular the fact that only 50% of patients were able to return to full-time work in their old occupations, while the rest had to retire or accept a less strenuous job.
Many paediatricians are unaware of the disease entity of discitis, which must be included in the differential diagnosis of several acute and subacute diseases of infancy and childhood. In order to draw attention to this disorder, three Swedish and two Arabic children, aged from 9 months to 3 years, are jointly presented. The onset of symptoms was 2-4 weeks prior to admission. The clinical diagnosis was verified by plain X-ray of the spine and bone scanning. Two of the children had low grade fevers. The erythrocyte sedimentation rates were moderately elevated, while white blood cell counts were normal or slightly increased. Blood cultures were negative. The children were treated with immobilization, and three of them received antibiotics. Full recovery was achieved in all children after 1-2 months. The diagnostic procedure and the rationale of using or not using antibiotic treatment is discussed.
A 63-year-old man presented with spinal cord compression caused by rheumatoid discitis at a high thoracic level. Nuclear magnetic resonance imaging proved to be very useful in evaluating the extent of the inflammatory process. Early decompression and internal fixation resulted in cure with only some residual functional impairment.
An unusual case of discitis in a 60-year-old, insulin-dependent, diabetic man is presented. Radiographs of the lumbar spine demonstrated changes associated with infection of the intervertebral disc space. Cultures from the L5-S1 disc space grew the microorganism designated by the Centers for Disease Control as Group Ve-1, an organism that has had questionable clinical significance in the past, and has not been reported as a pathogen in an intervertebral disc space.
Pseudomonas pickettii, a nonfermenting, gram-negative rod, is rarely pathogenic. Previous reports of infection with P. pickettii have largely involved direct contamination of supplies presumed to be sterile. We describe a case of vertebral osteomyelitis and intervertebral discitis caused by P. pickettii in a debilitated patient. The aggressive nature of this infection demonstrates that P. pickettii may be a more invasive organism than previously noted, particularly in hosts with weakened immunity secondary to underlying disease.
Discitis is usually a benign, self-limiting disease that is frequently misdiagnosed. The disease usually leads to spontaneous disc-space narrowing and end-plate irregularity, which require no treatment and rarely cause morbidity.
Discitis was experimentally induced in 42 dogs by intradiscal injections of bacterial suspensions and sequentially studied by X-rays and histopathology up to 24 weeks. 1. A narrowing of the serpentine intervertebral disc space was seen roentgenologically in the Pseudomonas and E. coli groups. 2. Histologically, the acute inflammation began to subside in eight weeks, at which time new bone formation started to appear, and fusion of the adjacent vertebrae became apparent in eight weeks. The degree of the disease process was more advanced in the Staph. aureus group and less severe in the Pseudomonas group. The E. coli group lay in between. 3. The inflammatory process seemed to be confined in the disc for a week after the injection, during which time the cartilagenous cells in the nucleus pulposus underwent atrophy and degeneration. This resulted in direct exposure of the cartilagenous plate to the infection, causing invasion of the inflammatory process into the vertebral body. 4. The presence of the epiphyseal line, however, seemed to act as a barrier to hinder the inflammatory process invading the vertebral body.
The bone scintigraphic findings of calcific discitis of childhood is described and one new case is presented. A brief review of the value of bone scintigraphy in the diagnosis of this syndrome as well as pathogenesis, clinical course, and treatment is provided.
Patients with systemic lupus erythematosus (SLE) are prone to develop opportunistic infections. Nevertheless, arthritis due to Pseudomonas aeruginosa in SLE is very rare and seems to be related to corticosteroid therapy and previous penetrating injury. A 17-year-old girl with SLE and Pseudomonas arthritis and discitis which followed laparotomy is described. Arthritis is a common manifestation of SLE, but arthritis due to infection with Pseudomonas is very serious and the diagnosis should not be missed.
Intervertebral discitis in children is a benign inflammatory condition with a varied clinical picture and quite characteristic radiographic findings. The etiology is still unknown and infectious and traumatic geneses have been discussed. A case in a girl aged three years is described and treatment with antibiotics and immobilisation are discussed.
Two patients developed unsteady gait and presented pathological neurologic signs in lower extremities which lead to suspect an expansive process in the spinal cord. The radiological exploration was normal in both cases. Magnetic resonance imaging resulted in diagnosis of discitis. A revision has been carried out of the different diagnostic procedures and the possible indications for magnetic resonance imaging.
Diagnosis of the infectious process of the intervertebral disc is often delayed due to the lack of specifity of the clinical picture. This delay in diagnosis and consequently in treatment can lead to severe neurologic sequela. In these cases, punction biopsy of the intervertebral disc is of special value. The authors found no mention in the literature concerning Chlostridium perfringens discitis verified by aspiration and fluid culture extracted by intervertebral disc puncture.
Diagnosis of disc space infection in childhood is often delayed and is usually made on the basis of multiple roentgenographic, laboratory, and nuclear imaging studies. Four cases of septic discitis in children are described. Special emphasis is placed on the diagnostic findings with magnetic resonance imaging. Magnetic resonance sensitivity for this entity and its role in comparison with other imaging modalities are discussed.
Microarteriography has demonstrated the anatomy which explains the pathogenesis and radiologic features of adult vertebral osteomyelitis and of childhood discitis. Infarction is caused in the metaphysis by a septic embolus. The intraosseous arteries in children are anastomotic and a small portion of bone is destroyed. In adults a larger portion of bone is destroyed because the intraosseous arteries are end-arteries and septic thrombosis spreads into peripheral intraosseous arteries. The disc is avascular at all ages and is attacked by infection equally. The trans-equatorial spread of osteomyelitis occurs via an artery which is first described here. It joins the metaphyseal anastomoses of the same vertebral body in the midline.
Aspergillus discitis is a rare disease that usually occurs in immunocompromised hosts. In the one case reported in the orthopedic literature surgical debridement was required. Two additional cases, which occurred in intravenous drug abusers, are reported here. One case is unique in the orthopedic literature in that eradication of the disease occurred with chemotherapy alone.
Postoperative discitis (POD) continues to be a diagnostic challenge and its management remains variable. This article raises the following questions and presents new observations. What is the current role of the CT scan in POD? Is a uniform pathogen involved and is there a basis for the duration of intravenous antibiotics? What is the expected long-term functional result? In a retrospective analysis of 12 consecutive patients with POD followed for an average of 29 months (17-42 months), the CT scan was extremely sensitive in showing a pathogen was present. The CT scan was misread in over one-third of the cases. Gram-positive cocci were the only organisms cultured (10 of 13 cultures, 8 of 12 patients). The erythrocyte sedimentation rate (ESR) invariably fell predictably to normal within 90 days when patients were treated with IV antibiotics for more than 40 days. Most patients were clinically improved and subjectively better at follow-up examination. No correlation existed between the patient's subjective result and preexisting medical conditions, the type of antibiotic, or the length of treatment, the ESR, or the follow-up roentgenograms.
Discitis was diagnosed in 5 children under 3 years of age, the initial clinical manifestations being difficulty in walking and abdominal pains in one case. Diagnosis was not made before periods varying from 8 days to 3 months, and no etiological basis for the disease was discovered. Pinching of the disc was always present in the first radiographic image, and the vertebral plate was ill-defined in 3 cases. Repeat radiological examinations were carried out in 3 children after 6 months, 2 and 5 years respectively. There was partial restauration of the disc space in 2 cases; the last one presented signs of late collapse after early recuperation. Early perilesional bone sclerosis was noted in 2 cases, while it was posterior and late in one child. There were no sequelae (fusion, vertebra plana, scoliosis). Two investigations are essential if a disc lesion is suspected: -- radiography of the spinal column, even if there are no disturbances in walking or abdominal pains. -- scintigraphy with technitium 99, which is the only means of establishing an early diagnosis.