- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03997071
RetroBRACE - Clinical and Functional Outcomes 2 Years After Primary ACL Repair (Internal Bracing) (RetroBRACE)
May 8, 2023 updated by: University Hospital, Basel, Switzerland
The purpose of this study is to quantify 2-year postoperative clinical and functional outcomes including side-to-side differences in gait function, balance, proprioception and muscle strength in patients treated by ACL repair with Internal Brace Ligament Augmentation.
Study Overview
Detailed Description
Rupture of the anterior cruciate ligament (ACL) is one of the most common injuries.
In recent years, arthroscopic techniques have rapidly evolved with advanced tools such as suture anchors, resolvable pins and internal bracing techniques.
One of the very latest developments in internal bracing and repair for proximal ACL ruptures is the InternalBraceTM (Arthrex Inc., Naples, Florida, USA).
The purpose of this study is to quantify 2-year postoperative clinical and functional outcomes including side-to-side differences in gait function, balance, proprioception and muscle strength in patients treated by ACL repair with Internal Brace Ligament Augmentation.
Study Type
Observational
Enrollment (Actual)
38
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
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Basel, Switzerland, 4031
- Department of Orthopaedics and Traumatology, University Hospital Basel
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Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years and older (Adult, Older Adult)
Accepts Healthy Volunteers
No
Sampling Method
Probability Sample
Study Population
All patients treated between 05/2016 and 06/2018 with ACL repair and Internal Brace Ligament Augmentation at the Clinic of Orthopaedics and Traumatology of the University Hospital Basel
Description
Inclusion Criteria:
- 2 years since ACL repair and Internal Brace Ligament Augmentation
Exclusion Criteria:
- Revision surgery within 2 years after primary repair (ACL, Total or Partial Knee Arthroplasty, Joint Infection, Fracture around knee level)
- BMI > 35 kg/m2
- Previous injury and surgical procedures of the contralateral knee
- Neuromuscular disorders affecting lower limb movement
- Additional pathologies that influence the mobility of the knee joints
- Inability to provide informed consent
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Observational Models: Cohort
- Time Perspectives: Prospective
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
joint position sense Analysis (proprioception)
Time Frame: single time point assessment (2 years after surgery)
|
Proprioception will be assessed bilaterally using a dynamometer (Biodex System 4 Pro: Biodex Medical Systems, Shirley, NY, USA) with an active joint position sense protocol.
Participants will be positioned with hips and knees flexed at 90°.
The subjects will then actively extend their knee to the target angles of 60° or 20° flexion, respectively.
The subjects will be asked to remember this position.
Starting from 90° flexion they will then be asked to extend their knee and reproduce the remembered target flexion angle pressing a stop button when they think they reached the angle.
The difference between the perceived angle and the initial target angle will be calculated.
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single time point assessment (2 years after surgery)
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muscle strength
Time Frame: single time point assessment (2 years after surgery)
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Muscle strength will be measured bilaterally using a dynamometer (Biodex System 4 Pro: Biodex Medical Systems, Shirley, NY, USA).
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single time point assessment (2 years after surgery)
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gait analysis
Time Frame: single time point assessment (2 years after surgery)
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Instrumented gait analysis on treadmill with embedded plantar pressure plate (h/p/cosmos, Zebris FDM-T, Isny, Germany; 7168 sensors; area, 1.5 * 0.5 m; range, 1-120 N/cm2; precision, 1-120 N/cm2 ± 5%; sampling rate, 120 Hz) and on an overground walkway with two embedded force plates (Kistler force plate 9260AA6, Kistler AG, Winterthur, Switzerland; sampling rate 2400 Hz).
Patients walk barefoot for 2 minutes at 0% slope at their preferred walking speed and at 1 m/s followed by walking at preferred walking speed.
The treadmill speed will be increased to preferred running speed, and data for 2 minutes running will be recorded.
Maximum flexion and extension angles and joint moments will be computed using the Biomove software (Stanford University).
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single time point assessment (2 years after surgery)
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maximum jump height (cm)
Time Frame: single time point assessment (2 years after surgery)
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Participants will perform three single leg hops on each leg.
Maximum jump height will be determined as the highest position of the pelvis marker compared to a standing trial
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single time point assessment (2 years after surgery)
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Euroquol 5 Dimensions (EQ-5D-5L)
Time Frame: single time point assessment (2 years after surgery)
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EQ-5D-5L questionnaire measuring generic health Status; descriptive system comprises five dimensions: mobility, self-care, usual activities, pain/discomfort and anxiety/depression.
Each dimension has 5 levels: no problems, slight problems, moderate problems, severe problems and extreme problems.
The patient is asked to indicate his/her health state by ticking the box next to the most appropriate statement in each of the five dimensions.
This decision results in a 1-digit number that expresses the level selected for that dimension.
The digits for the five dimensions can be combined into a 5-digit number that describes the patient's health state.
As a result, a person's health status can be defined by a 5-digit number, ranging from 11111 (having no problems in all dimensions) to 55555 (having extreme problems in all dimensions).
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single time point assessment (2 years after surgery)
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Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Investigators
- Principal Investigator: Annegret Muendermann, Prof. Dr. MD, Department of Orthopaedics and Traumatology Universitätsspital Basel
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
April 17, 2019
Primary Completion (Actual)
May 7, 2022
Study Completion (Actual)
May 7, 2022
Study Registration Dates
First Submitted
June 12, 2019
First Submitted That Met QC Criteria
June 24, 2019
First Posted (Actual)
June 25, 2019
Study Record Updates
Last Update Posted (Actual)
May 9, 2023
Last Update Submitted That Met QC Criteria
May 8, 2023
Last Verified
May 1, 2023
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 2019-00491; ch19Jakob
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
product manufactured in and exported from the U.S.
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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