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A 'benign' condition masquerading as arthritis.

V Shanmugapriya¹, B Subashini, K Brindha

¹Department of Pediatrics, ESI-PGIMSR, Chennai, Tamil Nadu, India.

BMJ Case Reports

|August 7, 2013

Summary

This summary is machine-generated.

Joint hypermobility syndrome can mimic arthritis in children, leading to delayed diagnosis. Early recognition of generalized joint hypermobility is crucial for accurate pediatric care.

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Area of Science:

Pediatric Rheumatology
Orthopedics
Genetics

Background:

Juvenile idiopathic arthritis (JIA) and other inflammatory arthropathies are common considerations in pediatric joint pain.
Accurate diagnosis is essential for timely and appropriate management, preventing long-term complications.

Observation:

A 9-year-old boy presented with symptoms suggestive of arthritis, including low-grade fever and lower limb joint pain.
Initial investigations for common arthritic conditions were negative, and he was treated for seronegative oligoarticular JIA.
Persistent symptoms prompted further investigation, revealing generalized joint hypermobility (Beighton score 9/9) and an anterior cruciate ligament tear with effusion.

Findings:

Generalized joint hypermobility was initially overlooked, leading to a diagnostic delay.
The patient's knee effusion resolved with physiotherapy and lifestyle modifications, indicating a non-inflammatory cause.
The clinical presentation mimicked inflammatory arthritis, highlighting a potential diagnostic pitfall.

Implications:

This case underscores the importance of assessing for generalized joint hypermobility in children presenting with joint effusions and pain, even when inflammatory markers are absent.
Misdiagnosis of joint hypermobility syndrome as JIA can lead to unnecessary treatments and delayed appropriate management.
Increased awareness and systematic screening for hypermobility can improve diagnostic accuracy and patient outcomes in pediatric rheumatology and orthopedics.