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Return to Sports After Knee Arthroplasty

Amendment to the Study Prospective, Multicenter Investigation of Clinical Rehabilitation and Everyday Recovery Following Knee Joint Endoprosthetic Replacement With Additional Return-to-sports-testing at One Participating Center

Status
Recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07183475
Acronym
RTS
Enrollment
50
Registered
2025-09-19
Start date
2025-07-15
Completion date
2027-07-31
Last updated
2025-09-19

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

Conditions

Arthroplasty Replacement, Knee, Knee Osteoarthristis

Keywords

return to sports, knee oteoarthritis, knee arthroplasty

Brief summary

The ability to return to sports after joint arthroplasty is increasingly becoming an important factor for patients in terms of their perceived quality of life. In sports orthopaedics, standardized functional tests have already been established - particularly for anterior cruciate ligament injuries - to assess athletic performance and prevent re-injury. These tests allow a stepwise evaluation of a subject's physical readiness for sports. In the field of arthroplasty, and despite increasing sports activity among patients with joint arthroplasty such structured assessment is still lacking. As a result, patients with arthroplasty typically resume sports activities based solely on individual recommendations from the surgeon or treating therapist. However, an objective evaluation of sports capability is currently not available. Therefore the amendment intends to expand the current testing protocol of the already registered and ongoing study (Protocol ID: UBonn\_TKA\_FollowUp) to include additional standardized, evidence-based return-to-sprort-tests.

Detailed description

These return-to-sports-tests are based on validated procedures commonly used in sports orthopaedics, particularly following the stepwise testing concept described by Keller et al.. Initially, the participant's individual sport level is determined via structured anamnesis. This is then followed by level-specific functional testing. Participants who do not perform Level 1 testing correctly will not proceed to Level 2 testing -even if their anamnesis suggests a higher sport level. This stepwise approach ensures safety and prevents injury during the testing process.

Interventions

DIAGNOSTIC_TESTReturn to sports test

The return-to-sport-tests are based on validated procedures commonly used in sports orthopedics, particularly following the stepwise testing concept described. Initially, the participant's individual sport level is determined via structured anamnesis. This is then followed by level-specific functional testing. Participants who do not perform Level 1 testing correctly will not proceed to Level 2 testing-even if their anamnesis suggests a higher sport level. This stepwise approach ensures safety and prevents injury during the testing process.

Sponsors

Technical University of Munich
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
SCREENING
Masking
NONE

Intervention model description

single-center, prospective pilot study

Eligibility

Sex/Gender
ALL
Age
18 Years to 85 Years
Healthy volunteers
No

Inclusion criteria

* The study includes all patients with a history of unicondylar or bicondylar knee joint replacement and engagement in sports activity. * All participating patients have provided their informed consent following comprehensive information and explanation. * All participating patients have signed the informed consent form for study participation as well as the data protection declaration after receiving detailed information and clarification.

Exclusion criteria

* Patients who are unable to understand the patient information and study design (e.g., due to language barriers) or whose compliance is deemed insufficient by the study team * No knee joint endoprosthesis implanted * No engagement in athletic activity

Design outcomes

Primary

MeasureTime frameDescription
Level of sports 1-4Baseline at the time of measurementLevels of sports are divided into four levels: 1. Sports without jumping; 2. Dynamic sports without pivoting or abrupt stopping movements; 3. Sports involving lateral movements and moderate pivoting or stopping motions (less intense than in Level 4); 4. Sports with jumping, rapid pivoting, and sudden stopping movements.

Countries

Germany

Contacts

Primary ContactChristina Valle, Dr. med.
christina.valle@tum.de004915142483500
Backup ContactIgor Lazic, PD Dr. med.
Igor.Lazic@mri.tum.de00498941406508

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026