Distribution of Knee Isokinetic Angle-specific Moments and Ratios (MOMANGLE)

Distribution of Knee Isokinetic Angle-specific Moments and Ratios: Searching for Normative Values in Healthy Subjects

The quantification of the strength-producing capacity of the knee joint muscles by isokinetic measurement is one of the most widely used tools for monitoring and deciding whether to return to sport after ACL reconstruction. However, the isokinetic evaluation performed in current practice does not exploit all the measures offered by this exploration technique, which can lead to errors in analysis and interpretation of the results and underestimate its ability to predict a return to sport under optimal conditions. Recently, more complete analysis models than those currently in use and integrating the moment-angle relationship have thus proposed the use of functional ratios sweeping the whole amplitude of the knee joint. Baumgart proposed an analysis of the variation of isokinetic force moments at each angle after ligamentoplasty. This approach seems to be the future of isokinetic performance analyses, but for the moment this has only been used in pathological populations and on small numbers of patients (less than 40). There are therefore no reference values in healthy subjects.

Study Overview

• Status: Completed
• Conditions: Musculoskeletal Diseases
• Intervention / Treatment: Other: Evaluation of the strength of knee flexors and extensors

Detailed Description

Rupture of the anterior cruciate ligament is a common sports trauma injury, frequently leading to a surgical intervention. However, despite the extensive scientific literature on the subject, return to sports at a lower level is common, sometimes to the point of giving up pivoting sports. Current rehabilitation strategies and the means used tend to limit their effectiveness, as do the batteries of tests for returning to sport .

One of the most widely used assessments for monitoring and decision-making on return to sport after ACL reconstruction is the quantification of the strength production capacity of the knee joint muscles by isokinetic measurement. However, the isokinetic evaluation carried out in current practice does not exploit all the measures offered by this exploration technique, which can lead to errors in the analysis and interpretation of the results . This discrepancy between the possibilities offered by this tool and its current exploitation may underestimate its capacity to predict a return to sport under optimal conditions .

In clinical practice, the analysis is reduced to the consideration of two indices: the peak torques of the extensor and flexor muscles of the knee, which are compared between the two legs (right and left sides), and the ratio between the torque peak of the flexor muscles and that of the extensor muscles, this ratio being considered as a control of joint balance. More comprehensive analysis models than those currently in use and integrating the moment-angle relationship have thus proposed the use of functional ratios sweeping the knee's joint range of motion. Baumgart has proposed an analysis of the variation of isokinetic force moments at each angle after ligamentoplasty . This approach seems to be the future of isokinetic performance analyses, but has so far only been used in pathological populations and on small numbers of patients (less than 40). There are therefore no reference values in healthy subjects. The search for reference values for the torque of the muscles of the knee over the entire angular range of motion represents an important line of research to improve the objective evaluation of the neuromuscular performance of the knee and the return to sport of patients, particularly following ACL reconstruction.

• Study Type: Interventional
• Enrollment (Actual): 70
• Phase: Not Applicable

Contacts and Locations

Study Locations

• France
  • Toulouse, France, 31000
    • Marc Antoine DEMARET

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 35 years (Adult)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Male and female subjects,
• Practicing a regular activity with a minimal activity of two trainings and one competition per week,
• Practicing this activity from at least 8 continuous weeks,
• Affiliated or benefiting from public health services.

Exclusion Criteria:

• Person presenting any of these conditions: professional player / athlete,
• patient with systemic pathology or treatment affecting the musculoskeletal system, patient with a history of traumatic pathology or any pathology requiring orthopaedic/surgical treatment of the knee and/or hip and/or spine,
• patient having a contraindication to an isokinetic test (disabling pain, progressive pathological process, unconsolidated fracture, unbalanced cardiovascular pathology), protected patient (adults under guardianship or other legal protection, deprived of their liberty by judicial or administrative decision), Pregnant and/or breastfeeding women.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Basic Science
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Other: Healthy subjects; Evaluation carried out on a BIODEX S4 Pro isokinetic dynamometer after a standardised 10-minute warm-up on this same dynamometer . The measurement range will be from 0° (full extension) to 90° of flexion for each knee, providing 91 degrees of measurement.	Other: Evaluation of the strength of knee flexors and extensors; Each participant will benefit from a clinical evaluation and an evaluation of the strength of knee flexors and extensors using an isokinetic dynamometer after a 10-minute warm up.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Distribution of knee isokinetic angle	The primary outcome will be composed of the following elements:(1)- a curve representing the distribution of the mean (and confidence interval) of the normative values of the knee flexors/extensors ratio at each angle on the tested amplitude, (2) a curve representing the distribution of the mean (and confidence interval) of the normative values of the right/left ratio at each angle on the tested amplitude,(3) a curve representing the distribution of the mean (and confidence interval) of the normative values of peak torque (normalized by subject mass) produced by the flexors and extensors at each angle over the amplitude tested, (4)- the distribution of the mean (and confidence interval) of the right/left differential on the value of the peak torque on the flexors and extensors and its angle of occurrence.	1 DAY

Collaborators and Investigators

• Sponsor: University Hospital, Toulouse
• Investigators: Principal Investigator: Marc-Antoine DEMARET, MD, University Hospital, Toulouse

Publications and helpful links

General Publications

• Ardern CL, Taylor NF, Feller JA, Webster KE. Fifty-five per cent return to competitive sport following anterior cruciate ligament reconstruction surgery: an updated systematic review and meta-analysis including aspects of physical functioning and contextual factors. Br J Sports Med. 2014 Nov;48(21):1543-52. doi: 10.1136/bjsports-2013-093398. Epub 2014 Aug 25.
• Gokeler A, Welling W, Zaffagnini S, Seil R, Padua D. Development of a test battery to enhance safe return to sports after anterior cruciate ligament reconstruction. Knee Surg Sports Traumatol Arthrosc. 2017 Jan;25(1):192-199. doi: 10.1007/s00167-016-4246-3. Epub 2016 Jul 16.
• Baumgart C, Welling W, Hoppe MW, Freiwald J, Gokeler A. Angle-specific analysis of isokinetic quadriceps and hamstring torques and ratios in patients after ACL-reconstruction. BMC Sports Sci Med Rehabil. 2018 Dec 6;10:23. doi: 10.1186/s13102-018-0112-6. eCollection 2018.

Study record dates

Study Major Dates

• Study Start (Actual): September 23, 2021
• Primary Completion (Actual): April 15, 2022
• Study Completion (Actual): April 15, 2022

Study Registration Dates

• First Submitted: September 2, 2021
• First Submitted That Met QC Criteria: September 2, 2021
• First Posted (Actual): September 13, 2021

Study Record Updates

• Last Update Posted (Actual): July 13, 2022
• Last Update Submitted That Met QC Criteria: July 12, 2022
• Last Verified: July 1, 2022

More Information

Terms related to this study

• Keywords: knee isokinetic angle
• Additional Relevant MeSH Terms: Musculoskeletal Diseases
• Other Study ID Numbers: RC31/21/0251

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No