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Research

DISCITIS IN CHILDHOOD

West of Scotland Orthopaedic Research Society (WOSORS)



Abstract

Discitis in childhood is rare. It can be difficult to diagnose, particularly in the younger child, often leading to a delay in initiation of appropriate treatment. It is not known whether it represents an infective or an inflammatory process.

Our aim was to review all cases treated at a regional children's hospital since the introduction of the departmental database. A retrospective review (64,058 cases), for the period 1990-2008 was performed. 12 cases were identified (3 male/9 female), with a biphasic age distribution; eight [mean 22 months old (12-32)] and four [mean 12 years old (11-13)]. Mean time to diagnosis from onset was 22 days, (5-49). Symptoms varied with age, no one less than 28 months complained of back pain, while all over 28 months did, to a varying degree. All the younger children presented primarily with a gait abnormality. 92% (11/12) were apyrexial on admission. WBC and CRP were normal in 83% (10/12). Venous blood cultures were negative in 89% (8/9). Only ESR was mildly raised, mean 30 (10-65). Radiographs showed loss of intervertebral disc height in 91% (10/11), earliest by 10 days following onset symptoms, mean 28 days. A technetium bone scan was performed in 42% (5/12) and an MRI of the lumbar spine, in 58% (7/12). All were positive for discitis. All occurred in the lumbar spine, 50% at L3/4. Antibiotics were used in 11/12 (92%), flucloxacillin alone in the majority 9/11. One had non-steroidal medication alone. No form of brace was used. Mean follow-up was 13.3 months (2-36). In all, symptoms had resolved by mean 6.5 weeks (2-12). No recurrence was noted.

The common features of childhood discitis are presented; knowledge of these may aid the physician to come to a more rapid diagnosis of this uncommon paediatric condition.