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RISK FACTORS FOR PES ANSERINUS TENDONITIS/BURSITIS SYNDROME. A CASE CONTROL STUDY
Alvarez-Nemegyei J. J Clin Rheumatol 2007;13:63–5.
Injury to the pes anserinus in the form of tendonitis/bursitis (PATB) can cause knee pain and the risk factors for this condition are not well documented.
What are the risk factors (demographic, clinical, somatometric and biomechanical) for PATB?
Subjects: 22 subjects with PATB patients (all women, mean age 62.1 (SD 11.5) years, range 45 to 82) and an age-matched control group (CON) of 36 (59.8 (SD 9.4) years).
Experimental procedure: All the subjects underwent clinical, somatometric and biomechanical assessment (presence of diabetes, knee osteoarthritis (and its radiographic severity), obesity, knee collateral and anteroposterior instability and knee or hindfoot malalignment).
Measures of outcome: Clinical, radiographic and lower limb alignment (biomechanical) criteria in CON versus PATB.
Clinical criteria: There was no difference between the PATB and CON groups in prevalence of diabetes, knee osteoarthritis, obesity, knee instability, varus knee deformity and hindfoot malalignment.
Radiographic criteria: There was no difference in overall, lateral, medial and patellofemoral knee osteoarthritis radiographic severity between groups.
Lower limb alignment: A valgus knee deformity alone (OR = 5.2; 95% CI 1.1 to 25.5), or in combination with collateral instability (OR = 6.0; 95% CI 1.4 to 26.0), was significantly associated with PATB.