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Ultrasound-based investigation of unilateral osteopenia in patients with CRPS of lower extremities compared to peripheral nerve lesions and postoperative or traumatic immobilization.

Ultrasound-based investigation of unilateral osteopenia in patients with CRPS of lower extremities compared to peripheral nerve lesions and postoperative or traumatic immobilization. - SAHARA

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
DRKS
Registry ID
DRKS00013762
Enrollment
310
Registered
2018-12-27
Start date
2017-06-14
Completion date
Unknown
Last updated
2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

M89.0 G57.9 Z76.9 G57.8 M80 M81

Interventions

Group 1: Group 1: Ultrasound-based measurement of bone mineral density in both feet in patients suffering from CRPS (complex regional pain syndrome) or mononeuropathy of a lower extremity (G57.8, G57.

Sponsors

Abteilung für Endokrinologie und DiabetologieMedizinische Klinik Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil GmbHUK RUB
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 85 Years

Inclusion criteria

Inclusion criteria: 1. Patients suffering from CRPS, which were exposed to prolonged immobilisation or partial weight-bearing due to surgery or due to pain in hip or knee joints or appendicular bones. 2. Control collectives: a. Healthy individuals b. Patients suffering from osteopenia or osteoporosis

Exclusion criteria

Exclusion criteria: Missing informed consent – contraindications for SAHARA measurements (including local infection, skin lesions, hyperalgesia due to mechanical contact, metal implants in situ) – fractures with direct calcaneal affection – bilateral disease – insufficient knowledge of the German language or other problems affecting communication – severe cognitive or psychiatric disorders.

Design outcomes

Primary

MeasureTime frame
Bone mineral density, as determined by ultrasound-based measurement, is unilaterally significantly reduced both in early-stage CRPS and in extensive nerve injury, resulting in significantly increased lateral difference compared to the non-affected side.

Secondary

MeasureTime frame
The lateral difference ob bone mineal densitiy, as determined by ultrasound-based measurement, is larger in CRPS compared to other unilateral diseases. After re-mobilisation an increase in bone mineral density is observed, which is, however, reduced in CRPS compared to other diseases.

Countries

Germany

Contacts

Public ContactJohannes W. Dietrich

Sektion Diabetologie, Endokrinologie und Stoffwechsel, Universitätsklinik St. Josef-Hospital, UK RUB

johannes.dietrich@ruhr-uni-bochum.de+49 234 509 - 2311

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026