Biomechanical Effects of a Four-Point Frame Knee Brace Under Functional Loads in Chronic Knee Joint Instability

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00038202

Enrollment

Registered

2025-10-21

Start date

2025-11-17

Completion date

Unknown

Last updated

2025-11-24

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

Conditions

M23.51

Interventions

Group 1: Prospective, non-interventional study 25 patients after surgical treatment of ACL ruptures with existing clinical anterior instability of the knee joint = 3 months and indication for revision

Eligibility

Sex/Gender

All

Age

18 Years to 60 Years

Inclusion criteria

Inclusion criteria: • treated ACL ruptures with existing clinical anterior instability of the knee joint = 3 months and indication for revision surgery •knee laxity: side difference in the Lachmann-test using Rolimeter of = 4mm • physically active (Tegner Score =4) • healthy contralateral side • side difference in the single leg hop of = 10% • indication for prescription of a functional knee brace

Exclusion criteria

Exclusion criteria: • injuries of the PCL • medial instability > Grad I according to Hughston

Design outcomes

Primary

Measure	Time frame
Kneekinematik (sagittal, frontal, transversal) and -moments (sagittal, frontal) (3D-motion capture)	—

Secondary

Measure	Time frame
Questionnaire covering pressure and discomfort (developed for the study), positioning stability [mm] (3D motion capture)	—

Countries

Germany

Outcome results

None listed

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