Limitación del movimiento de flexión dorsal del tobillo en sujetos pronadores con dolor lumbar crónico

Abstract

BackgroundThe influence between the imbalances in foot biomechanics and chronic low back pain (CLBP) has been described in different studies. Some authors suggest that the reduced ankle (TPA) dorsiflexion (FD) can present as a risk factor in chronic low back pain. ObjectiveTo evaluate low back pain in subjects with pronated feet and limited ankle dorsiflexion compared to those with pronated feet and normal mobility of ankle. Material and methodA cross-sectional study with convenience sampling was performed on 126 subjects with chronic low back pain and pronated feet. Participants were divided into two groups, both with pronated feet but one with reduced FD in at least one foot and the other with normal FD of TPA movement. A visual analogue scale (VAS) and the Oswestry Low Back Pain Index (ODI) were used as tools for assessing the dependent variable. ResultsAfter the analysis of the data, a positive correlation was found between the limited FD of the movement of the TPA in pronated feet subjects with CLBP versus those who had normal mobility of TPA and pronated feet (VAS 4±0,22; ODI: 11.85%±1.21). The limitation of the joint range of the ankle seemed to be a risk factor in CLBP in pronator subjects (VAS 5.3±0.22; ODI: 17.90%±1.42) (ODI scale=0.004, VAS 0.009). ConclusionsThere is evidence of a higher rate of chronic lumbar pain in pronated patients with reduced ankle dorsiflexion as assessed with a VAS and the ODI scale.