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Knee Arthroplasty Instability Study

NCT05676437 · Status: NOT_YET_RECRUITING · Type: OBSERVATIONAL · Enrollment: 100

Last updated 2023-01-23

No results posted yet for this study

Summary

Total knee replacement (TKR) instability is a poorly defined entity. The diagnosis is based on symptoms and clinical tests of knee laxity. A subjective feeling of instability, such as giving away is not always present in the unstable knee; however, the patient will rather have non-specific symptoms like pain and swelling. On the other hand, symptoms of instability may be present without excessive laxity. The evaluation of abnormal laxity is also uncertain due to individual variations of normal laxity and the subjectivity of manual laxity testing. Different instrumented methods have been developed in order to reduce subjective bias. Stress radiography is one such test which has been utilised to objectively measure medial and lateral joint opening during varus/valgus stress and anteroposterior translation when subjected to sagittal stress. The limits of acceptable laxity measured by stress radiography is however not established. The aim of this study is to determine thresholds of acceptable laxity as measured by stress radiography.

Conditions

  • Knee Instability in Total Knee Artrhroplasty

Interventions

DIAGNOSTIC_TEST

Stress radiography

Radiographic examination during clinical stress test of knee laxity

Sponsors & Collaborators

  • Diakonhjemmet Hospital

    lead OTHER

Principal Investigators

  • Bernhard Flatøy, Ph.D · Diakonhjemmet Hospital

Eligibility

Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2023-03-31
Primary Completion
2025-03-31
Completion
2026-03-31

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05676437 on ClinicalTrials.gov