Relationship of the tissue stiffness measured using shear wave elastography with the pain threshold and quality of life of patients with lipedema: A cross-sectional study

ObjectiveTo assess the relationship between disease severity in lipedema and tissue stiffness measured using shear wave elastography (SWE) concerning pain threshold and quality of life as well as determine differences in subcutaneous tissue stiffness between patients with lipedema and healthy subjects.Methods71 participants were subjected to measurements using subcutaneous tissue elastic modulus with SWE imaging of lower limbs at three anatomical levels. The participants were divided into two groups: those diagnosed with lipedema (Group (1) (n = 35) and healthy subjects (Group (2) (n = 36). Patients with lipedema were categorized into three stages based on disease severity. Pain levels were assessed using the visual analog scale (VAS), pain pressure threshold through algometric measurement within lipedema stages, and quality of life using EQ-5D quality of life scale in all groups.ResultsNo statistically significant differences in age, BMI, right and left three-zone elastic modulus averages were observed between the groups within BMI levels of 25-29.9 and ≥30 kg/m2 (p > .05). Same BMI group, according to lipedema stage, the mean elastic modulus of the right pretibial region in stage 2 cases was significantly higher than in stage 1 cases within BMI levels of 25-29.9 kg/m2 (p < .05). The all-region algometric measurements in Group 1 were significantly lower than those in Group 2, within BMI levels of 25-29.9 kg/m2 and ≥30 kg/m2. The average spontaneous VAS scores in Group 1 were significantly higher than those in Group 2 within the same BMI (p < .05). The VAS palpation scores in Group 1 exceeded those in Group 2 for BMI ≥30 kg/m2 (p < .05). No significant difference in VAS palpation scores was observed for BMI 25-29.9 kg/m2 (p > .05). The EQ-5D VAS scores of the control group were significantly lower than those of stage 1, 2, and 3 cases (p < .05).ConclusionsIn lipedema, pain characteristics may be more distinctive than the elastic properties of adipose tissue. Increased algometric measurements may reflect a specific objective sensation.