Association of systemic lupus erythematosus and hypermobility

Area of Science:

• Rheumatology
• Connective Tissue Diseases
• Clinical Immunology

Background:

• Systemic lupus erythematosus (SLE) is a chronic autoimmune disease affecting multiple organ systems.
• Joint hypermobility, characterized by excessive range of motion in joints, is a recognized feature in certain connective tissue disorders.

Purpose of the Study:

• To evaluate the prevalence and characteristics of joint laxity in patients diagnosed with SLE.
• To determine if joint laxity is associated with specific clinical or laboratory findings in SLE patients.

Main Methods:

• A cohort of 81 patients meeting the 1999 American College of Rheumatology criteria for SLE was assessed for joint laxity using the Beighton criteria.
• A control group of 280 patients attending a general practitioner was included for comparison.
• Logistic regression analysis was employed to identify associations between SLE, joint laxity, age, and sex.

Main Results:

• A significantly higher proportion of SLE patients (48%) demonstrated joint laxity compared to the control group (15%).
• The association between SLE and joint laxity was more pronounced in older patients (aged 49 years or older), with an odds ratio of 17.99.
• Joint laxity was not found to be correlated with the clinical or analytical profile of SLE, nor with the use of corticosteroids.

Conclusions:

• Patients with SLE exhibit a greater prevalence of joint hypermobility than the general population.
• Older individuals with SLE are particularly susceptible to pronounced joint laxity.
• Joint laxity in SLE appears independent of disease characteristics and corticosteroid treatment.