A novel non-pneumatic compression device results in reduced foot and ankle swelling in patients with venous and lymphatic edema.

Abstract

Objectives: Non-pneumatic compression devices (NPCDs) rely on shape-memory alloy technology that allows patients to ambulate and remain active during lymphedema treatment. This study examines the effect of the NPCD on foot and ankle swelling.

Methods: This was a prospective, non-randomized study of patients with phlebolymphedema (venous insufficiency-related lymphedema) treated with a novel NPCD for 4 weeks. Ankle and foot circumference (cm), and volume measurements (ml water displacement using immersion) of the foot and ankle were obtained at enrollment, 2-weeks, and 4-weeks, and ambulation was tracked with a wearable exercise monitoring device.

Results: This study included 13 patients (21 limbs). A significant reduction in circumference (ankle (-0.84 ± 0.22 cm, p < .01) and metatarsal bed (-0.55 ± 0.95, p < .01)) and volume (foot/ankle (-52 ± 22 mL, p = .032)) was observed. Patients reported a mean of 8100 steps per day (±6100).

Conclusions: NPCD results in significant reduction in edema in the foot and ankle despite garments lacking a foot piece. Patients remained mobile while adhering to therapy.