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Whole blood, bone marrow and synovial fluid metal concentrations in children and adolescents with versus without osteosynthesis devices or/and arthroplasty impants in situ - a multicenter pilot study

Whole blood, bone marrow and synovial fluid metal concentrations in children and adolescents with versus without osteosynthesis devices or/and arthroplasty impants in situ - a multicenter pilot study - YMCA (Youth Metal Concentration Analyses)

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
DRKS
Registry ID
DRKS00031567
Enrollment
6000
Registered
2023-03-29
Start date
2023-03-31
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

T56.9 Z96.6 T84.9 Z47.0 T56.8

Interventions

Group 1: Patients who have at least one metal orthopaedic implant (e.g. screw/s, wire/s, plate/s, nail/s, arthroplasty implant/s) in situ. (Patients with "relevant implant status") Analyses of whole

Sponsors

Zentrum für Orthopädie, Unfallchirurgie und Rehabilitationsmedizin, Universitätsmedizin Greifswald
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: a) for prospective collection of data and biomaterials: • every patient (f/m/d) of any age who is scheduled to undergo surgery or/and a blood draw in the course of clinical routine at one of the study centers • written informed consent of the legal custodian or – in case of legal age and empowerment – written informed consent of the patient • only for the study group (Arm 1): at least one (paediatric) orthopaedic implant in situ b) for retrospective data collection: • every patient (f/m/d) of any age who underwent blood (whole blood or serum) metal ion concentration analysis / analyses in the past in the course of clinical routine (e.g. “monitoring” of blood metal levels in patients with growing implants in situ (such as growing rods for scoliosis treatment) • as conformable to law / in consideration of legal regulations in force at the respective study center (Greifswald/Mecklenburg-Vorpommern (Germany); Berlin (Germany); Graz (Austria)): written informed consent of the legal custodian or – in case of legal age and empowerment – written informed consent of the patient: (a) for pseudonymised / anonymised usage of the patient’s data obtained in the course of clinical routine (i.e. diagnostics and/or therapies) at the respective university medicine center for institutional research OR (b) for inclusion of the patient’s pseudonymised / anonymised data in this study • only for the study group (Arm 1): at least one (paediatric) orthopaedic implant in situ

Exclusion criteria

Exclusion criteria: a) for prospective collection of data and biomaterials: • lack of (valid) written informed consent of the legal custodian or – in case of legal age and empowerment – written informed consent of the patient • concurrent participation in a Medicinal Products Act (AMG) study • concurrent participation in a Medical Device Regulation (MDR) study b) for retrospective data collection: • as conformable to law / in consideration of legal regulations in force at the respective study center (Greifswald/Mecklenburg-Vorpommern (Germany); Berlin (Germany); Graz (Austria)): lack of (valid) written informed consent of the patient / the patient’s legal custodian: (a) for pseudonymized / anonymized usage of the patient’s data obtained in the course of clinical routine (i.e. diagnostics and/or therapies) at the respective university medicine center for institutional research OR (b) for inclusion of the patient’s pseudonymized / anonymized data in this study conformable to law / legal regulations in force at the respective study center (Greifswald/Mecklenburg-Vorpommern (Germany); Berlin (Germany); Graz (Austria)): • effective revocation of consent to participate in this study • effective revocation of consent to usage of the patient’s pseudonymized / anonymized data for institutional research • concurrent participation in a Medicinal Products Act (AMG) study • concurrent participation in a Medical Device Regulation (MDR) study

Design outcomes

Primary

MeasureTime frame
Primary endpoints include cobalt- (Co), chromium- (Cr), titanium- (Ti), vanadium- (V), aluminum- (Al), molybdenum- (Mo), nickel- (Ni), niobium- (Nb), zirconium- (Zr), manganese- (Mn) and tantalum- (Ta) concentrations in whole blood, bone marrow / cancellous bone and synovial fluid of children and adolescents with and without relevant implant status.

Secondary

MeasureTime frame
Secondary end points include the establishment of reference values for cobalt- (Co), chromium- (Cr), titanium- (Ti), vanadium- (V), aluminum- (Al), molybdenum- (Mo), nickel- (Ni), niobium- (Nb), zirconium- (Zr), manganese- (Mn) and tantalum- (Ta) concentrations in whole blood of children and adolescents. Further secondary end points include the characterization of metals (possibly) released from paediatric orthopaedic implants, as well as of the local and systemic cellular immune status of patients with versus without elevated metal concentrations.

Countries

Austria, Germany

Contacts

Public ContactAnastasia Rakow

Zentrum für Orthopädie, Unfallchirurgie und Rehabilitationsmedizin, Universitätsmedizin Greifswald

anastasia.rakow@med.uni-greifswald.de0049 3834 867051

Outcome results

None listed

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