Arabic Version of Marx Activity Rating and Knee Stability in Sports/Cutting-Pivoting Ability Scales

May 11, 2025 updated by: Majed Ali AlAbbad, Imam Abdulrahman Bin Faisal University

Cross-Cultural Adaptation and Psychometric Properties Analysis of Arabic Version of Marx Activity Rating Scale and Knee Stability in Sports/Cutting-Pivoting Ability Scale for Saudi Athletes With Anterior Cruciate Ligament Injury

Anterior cruciate ligament (ACL) injuries are among the most common knee ligament injuries, causing joint instability and impairments. Besides being challenging, this type of injury greatly affects the athlete's passion and wellbeing, and it is associated with several risk factors. Injuries to the ACL are estimated to occur within 80,000 to 250,000 young, active and healthy athletes each year. This cross-sectional observational study aimed at translating, adapting cross-culturally, and investigating the psychometric properties of the Marx Activity Rating Scale (MARS) and the Knee Stability in Sports/Cutting-Pivoting Ability (KSS/CPA) scale in Saudi patients with anterior cruciate ligament injuries. For this study, a convenient sample size of 100 athletes with ACL injuries and healthy participants will be selected from different Saudi hospitals and clubs. Study participants will be informed about the study and a consent form will be obtained before they participate. A number of scales will be used as outcome measures, including the MARS, KSS/CPA scale, Knee Injury, and Osteoarthritis Outcome Score, Lysholm Knee Score, and International Knee Documentation Committee Subjective Knee Form. Internal consistency of both the MARS and KSS/CPA scales will be tested using Cronbach's alpha. A construct's validity will be measured by Spearman's correlation coefficient. Content validity can be determined by examining whether there are floor and ceiling effects. A significance level of 0.05 will be used to determine whether the data is significant. Ultimately, the study will help patients with ACL injuries to make informed decisions about their treatment, empower healthcare professionals to understand patients' concerns, and facilitate research.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
150

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Saudi Arabia
    • Eastern Province
      • Dammam, Eastern Province, Saudi Arabia, 2435
        • Recruiting
        • Imam Abdulrahman bin Faisal University
        • Contact:

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 45 years (Adult)

Accepts Healthy Volunteers

Yes

Sampling Method

Probability Sample

Study Population

sports population

Description

Inclusion Criteria:

  1. An athlete with an orthopedic diagnosis of unilateral ACL injury
  2. Age from 18 years to 45 years old
  3. Participants who read and write in Arabic
  4. Healthy participants that do not have lower limb injury limited participation in physical activity for at least six months.

Exclusion Criteria:

  • 1 Patients with other lower limbs or different musculoskeletal injuries such as lower back pain may affect physical activity

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

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
control
Other: patient reported outcome measures
Activity Rating Scale, Knee Stability in Sports/Cutting-Pivoting Ability scale, Knee Injury and Osteoarthritis Outcome Score, Lysholm Knee Score, and International Knee Documentation Committee Subjective Knee Form.
athletes with anterior cruciate ligament injuries
Other: patient reported outcome measures
Activity Rating Scale, Knee Stability in Sports/Cutting-Pivoting Ability scale, Knee Injury and Osteoarthritis Outcome Score, Lysholm Knee Score, and International Knee Documentation Committee Subjective Knee Form.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Arabic version of Marx activity rating scale
Time Frame: 1 minute
The arabic version of Marx activity rating scale measures four activities: running, deceleration, cutting, and pivoting; higher scores indicate an increased frequency of knee-related activities. The frequency of performing these activities in the past 12 months is measured on a five-point scale. Based on the four items, the maximum score is 16 (if they answer "four or more times a week" for all four), and the minimum score is zero. For each item, one point will be awarded for each frequency category, beginning with "one time every month." and if participants answered "less than once a month" for one of the items, they will be awarded zero points; "once in a month," one point; "once a week," two points; etc.
1 minute
Arabic version of knee stability in sports/cutting -pivoting ability scale
Time Frame: 1 minute
The items in the Arabic version of knee stability in sports/cutting -pivoting ability scale are ranked on a Likert scale of 1 to 5, with response categories consisting of (A) normal, (B) near-normal, (C) abnormal, (D) severe abnormal, and (E) dysfunctional. knee stability in sports is a scale that emphasizes giving way to sensations and instability in the knees during linear activities (i.e., running in straight lines, accelerating, and decelerating), which involve lower-level motions. The cutting -pivoting ability scale section concerns the frequency, ability, and discomfort of performing pivotal activities. However, the ordinal knee stability in sports/cutting -pivoting ability scale will be converted into continuous variables (A = 100, B = 75, C = 50, D = 25, E = 0) and an overall self-assessment evaluation of knee function (0 = worst, 100 = best) will be recorded.
1 minute

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Knee Injury and Osteoarthritis Outcome Score
Time Frame: 3 minutes
There are five subscales with 42 items in the Knee Injury and Osteoarthritis Outcome Score questionnaire: Pain (9 items), Symptoms (7 items), Activities of Daily Living (17 items), Sport and Recreation (5 items), and Knee-related Quality of Life (QoL4). Each item wil be scored using a Likert scale ranging from 0 (no problem) to 4 (extreme problem). In addition, the subscale items will be rated on a scale of 0 to 100 using the following formula (100*average of subscale item scores/4*100), and higher scores indicate better health (100 = no knee problems) while low scores indicate poor health.
3 minutes
Lysholm Knee Score
Time Frame: 2 minutes
Eight categories will be measured in the Lysholm Knee Score: instability (25 marks), pain (25 marks), catching (15 marks), stair climbing (10 marks), swelling (10 marks), need for support (5 marks), squatting (5 marks), and limping (5 marks). Each answer to the eight questions counts toward the total score, ranging from 0 to 100. High scores indicate better results and fewer symptoms. Lower scores indicate a problem with knee function.
2 minutes
International Knee Documentation Committee Subjective Knee Form
Time Frame: 2 minutes
There are three main sections in the International Knee Documentation Committee Subjective Knee Form, overall consisting of 18 items: (1) symptoms (7 items), including swelling, pain, stiffness, giving way, and locking, (2) sports (1 item), (3) current knee function (9 items), and knee function after a knee injury (1 item) (not included in the overall score). The International Knee Documentation Committee Subjective Knee Form will be calculated by adding the scores of the individual items. The score will be then transformed into an overall score ranging from 0 to 100, with 100 indicating the absence of symptoms and higher levels of functioning. A total score of 100 will be calculated as (sum of items)/ (maximum possible score).
2 minutes

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Imam Abdulrahman Bin Faisal University

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Qatif Central Hospital

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)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
May 1, 2022

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 1, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 20, 2022

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 20, 2022

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 22, 2022

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
May 14, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 11, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
May 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • QCH-SREC0 4 /2022

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

IPD will not be shared

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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