Analysis and relationship between the volume of upper limb lymphoedema and pressure pain threshold, neural range of motion, pain intensity, kinesiophobia, pain hypervigilance and catastrophizing in breast cancer survivors.
Isabel Almagro-Céspedes, Rosa M Tapia-Haro, Antonio M Mesa-Ruiz and 3 others
PMID 39291952WHAT IT FOUND
Breast cancer survivors with lymphoedema had higher sensitivity to pressure pain and greater fear of movement than those without.
However, the actual volume of the swollen limb did not correlate with pain intensity or fear levels. Treating the swelling size alone may not address the patient's pain experience.
Key findings
01Participants with lymphoedema showed significantly lower pressure pain thresholds (higher sensitivity) on both the affected and unaffected sides compared to controls.
02Those with lymphoedema scored significantly higher on tests for kinesiophobia (fear of movement) but showed no significant difference in pain intensity, hypervigilance, or catastrophizing.
03Linear regression analysis found no significant association between the volume of the upper limb and pain intensity, kinesiophobia, hypervigilance, or catastrophizing, except for a negative correlation with radial nerve range of motion.
STILL TO COME
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What it does not show
The cross-sectional design means causality cannot be determined; it is unclear if lymphoedema causes the sensitivity or if both are results of prior treatment. The study excluded patients with bilateral surgery or other chronic pain conditions, so results may not apply to more complex cases. Limb volume was assessed using a perimetric method without complementary tests like bioimpedance, which might miss irregular fluid distribution. The sample size was relatively small (58 total), limiting the generalizability of the findings. Participants were recruited from a specific support association (AMAMA), which may introduce selection bias regarding their psychological state or engagement in care.
Declared interests
The authors declare no conflicts of interest with any financial organization.
The easy way to misread this
Do not assume that the severity of the physical swelling (volume) drives the patient's pain or fear. The study found no link between limb volume and pain intensity or kinesiophobia. Treating the volume alone may fail to address the heightened sensitivity and fear of movement that persist independently of the swelling size.