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Pseudodystrophy at the lower limb in children

P Herregods1, J Willems, R Chappel

  • 1Dept of Physical Medicine and Rehabilitation, Middleheim Hospital, Antwerp, Belgium.

Clinical Rheumatology
|June 1, 1997
PubMed
Summary
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This case study highlights pseudodystrophy in a child, emphasizing its distinction from reflex sympathetic dystrophy (RSD). Early diagnosis and multidisciplinary treatment, including physiotherapy and psychological support, are crucial for recovery.

Area of Science:

  • Pediatric Orthopedics
  • Child Psychology
  • Pain Management

Background:

  • Reflex sympathetic dystrophy (RSD) is frequently over-diagnosed in children due to a lack of definitive diagnostic criteria.
  • Distinguishing RSD from other painful leg syndromes, such as pseudodystrophy, is clinically challenging.

Observation:

  • A 12-year-old girl presented with a painful left leg syndrome, limping, functional incapacity, and severe muscle atrophy.
  • Investigations revealed no inflammatory markers, diffuse osteoporosis, decreased bone mineral content, and hypofixation on bone and vascular scintigraphy.
  • These findings suggested pseudodystrophy, a condition often linked to psychological factors.

Findings:

  • The patient experienced successful treatment through physiotherapy, hydrotherapy, NSAIDs, and psychological support.

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  • Radiographic and scintigraphic changes, including focal osteoporosis and disturbed vascular scintigraphy, are considered necessary for an RSD diagnosis.
  • In the absence of these specific findings, pseudodystrophy is a more accurate diagnosis.

    • Implications:

    • Accurate diagnosis is essential for effective treatment of pediatric painful leg syndromes.
    • Pseudodystrophy should be considered in cases with suggestive clinical and imaging findings but lacking definitive RSD markers.
    • Multidisciplinary management, integrating physical and psychological therapies, can lead to positive outcomes in children with pseudodystrophy.