This study aims to evaluate the intra- and inter-rater reliability of the MyotonPRO, a handheld device that measures the viscoelastic properties of the skin, in patients with breast cancer-related lymphedema. Twenty women with unilateral upper extremity lymphedema will be included. Each participant will undergo repeated skin assessments using the MyotonPRO by two independent raters. Additionally, ultrasonographic tissue characteristics and limb volume measurements will be performed. The findings are expected to contribute to the validation of the MyotonPRO for use in clinical lymphedema evaluation.
The study will be conducted at a single center with 20 women diagnosed with unilateral upper extremity lymphedema after mastectomy. Participants will be evaluated using the MyotonPRO device by two trained raters to assess intra- and inter-rater reliability. Ultrasonographic grading of subcutaneous echogenicity and echo-free space, as well as circumference and volume measurements, will be conducted to explore correlations with biomechanical tissue properties. Statistical analysis will include intraclass correlation coefficient (ICC) for reliability and Pearson correlation for validity. This study is expected to support the clinical use of MyotonPRO in lymphedema assessment.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
20
The MyotonPRO is a non-invasive handheld device that assesses the mechanical and viscoelastic properties of soft tissue (e.g., skin stiffness, elasticity, and relaxation time). In this study, it is used in patients with breast cancer-related lymphedema (BCRL). Each participant is evaluated by two blinded raters to determine intra- and inter-rater reliability.
Intra- and Inter-Rater Reliability of MyotonPRO Measurements
The reliability of the MyotonPRO device will be evaluated through repeated measurements of skin stiffness parameters by two independent raters on the same day. The primary outcome is the intraclass correlation coefficient (ICC) for intra- and inter-rater agreement.
Time frame: Within 1 day
Intra- and Inter-Rater Reliability of MyotonPRO Measurements
The reliability of the MyotonPRO device will be evaluated through repeated measurements of skin stiffness parameters by two independent raters on the same day. The primary outcome is the ICC, which quantifies intra- and inter-rater agreement in repeated biomechanical measurements.
Time frame: Within 1 day
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.