Project: Testing applicability of Lipedema-characteristic sensory PPT/VDT measurements in patient-supporting contexts

Principal Investigator: Tim Hucho, Prof. Dr.  
Professor
Translational Pain Research & Pain Center
Department of Anaesthesiology and Intensive Care Medicine
Medical Faculty and University Hospital Cologne
University Cologne
Cologne, Germany

Co-Principal Investigator: Rebecca Dinnendahl, Dr. 
Research Scientist
Translational Pain Research & Pain Center
Department of Anaesthesiology and Intensive Care Medicine
Medical Faculty and University Hospital Cologne
University Cologne
Cologne, Germany

Co-Principal Investigator: Philipp Kruppa, Dr. 
Attending Physician, Department of Plastic, Reconstructive and Aesthetic Surgery - Hand Surgery and Burn Center
Department of Plastic, Reconstructive and Aesthetic Surgery - Hand Surgery and Burn Center
University Hospital Schleswig-Holstein (UKSH), Campus Luebeck
Luebeck, Germany

Summary

This research explores the role and real-world applicability of pressure pain and vibration detection thresholds as fast, low-cost, objective, and widely applicable tool for early diagnosis, differential diagnosis, and therapy monitoring in Lipedema, enabling routine clinical use, earlier detection across the lifespan, and rigorous evaluation of established and novel treatments.

Background

Emerging evidence shows that Lipedema is associated with specific, objectively measurable sensory alterations in form of reduced pressure pain thresholds and impaired vibration detection. However, their translation into routine clinical practice, early diagnosis, longitudinal monitoring, and therapy evaluation remains untested. This project fills this gap by validating PPT/VDT measurements for broad, real-world diagnostic and therapeutic applications.

Methodology

This project comprises a set of non-interventional and minimally interventional clinical studies translating quantitative sensory testing into real-world Lipedema care. Using pressure pain threshold (PPT) and vibration detection threshold (VDT) measurements, we objectively assess Lipedema-associated sensory alterations.

The study includes: (1) observational feasibility testing of PPT/VDT as a routine clinical measure; (2) an observational family study across generations to identify early sensory changes; (3) a longitudinal follow-up study assessing women before and ~5 years after liposuction; and (4) an interventional comparison of standard manual lymphatic drainage versus manual deep tissue relaxation therapy.

Controls include healthy, age- and weight-matched participants, unaffected body sites (hand dorsum), and standard-of-care treatments. PPT and VDT are measured at the lateral thigh using validated bedside devices (~10 minutes total). Data are used to support diagnosis, stratify cohorts, and objectively evaluate therapeutic effects, particularly pain.

Expected outcomes

The project hypothesizes that pressure pain and vibration detection thresholds constitute robust, objective, and disease-specific sensory markers of Lipedema. Expected outcomes include proof of feasibility for routine clinical use, detection of Lipedema-associated sensory changes early in life, and validation of PPT/VDT for longitudinal monitoring of established and novel therapies, thereby improving diagnosis, cohort stratification, and outcome assessment across clinical and research settings.

Practical implementations of results

The results are expected to enable rapid, low-cost, and objective support for Lipedema diagnosis in routine clinical practice, reduce diagnostic delay, and improve differential diagnosis. Establishing PPT/VDT as standardized outcome measures will enhance patient stratification, comparability of clinical trials, and objective monitoring of therapeutic efficacy, thereby accelerating translational research and informing evidence-based, mechanism-oriented treatment strategies.

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