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NCT Number: NCT06538792

Proprioception, Muscle Strength and Kinesiophobia After Anterior Cruciate Ligament Reconstruction

Fear of re-injury after anterior cruciate ligament reconstruction surgery (ACLR) affects individuals' return to sports and physical activity negatively. The aim of this study is to evaluate the effects of proprioception and muscle strength on kinesiophobia in patients who have undergone anterior cruciate ligament reconstruction surgery.

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Key information

Conditions

Anterior Cruciate Ligament Reconstruction

Age range

18 year–35 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Bezmialem Vakif University

Istanbul, Turkey (Türkiye)

Location status: Recruiting

Location contact

Kubra Alpay, PhD

CONTACT

[email protected]

Vahdet Uçan, Assoc. Prof.

SUB_INVESTIGATOR

İldeniz Yalnız, MSc

SUB_INVESTIGATOR

About this study

Factors such as graft type, patient age, activity level and athletic experience, as well as psychological factors such as psychological readiness for return to sports, fear of re-injury, and motivation during the rehabilitation process, affect returning to sports after ACLR. Fear is a psychological reaction that occurs after injury and is clearly seen during the period when athletes continue to actively participate in sports. Individuals' confidence in their knees and pain after surgery affect their fear of movement.

While kinesiophobia provides benefits in protecting injured body parts in the acute phase of pain, it can lead to inactivity, emotional stress and risk of re-injury in the long term. Kinesiophobia changes the biomechanics of movements and pain perception. Insufficient muscle strength and instability in the knee negatively affect confidence in the knee. The aim of this study is to evaluate the effects of proprioception and muscle strength on kinesiophobia in patients who have undergone anterior cruciate ligament reconstruction surgery.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Between the ages of 18-35
  • History of ACL reconstruction surgery at least 6 months ago

Exclusion criteria

  • History of previous lower extremity surgery
  • History of lower extremity injury within the last 6 months
  • Having a vestibular or neurologic pathology that would affect balance

Treatment and study plan

Primary outcomes

  1. Kinesiophobia

    Time frame: Baseline

    The Tampa Kinesiophobia Scale consists of seventeen items. Scores obtained from the scale range from 17 to 68, with higher scores indicating greater severity of kinesiophobia.

  2. Joint position sense

    Time frame: Baseline

    Measurement of knee joint position sense by the active and passive repositioning technique with isokinetic dynamometer at 30˚ and 60˚.The deviation from the target angle is recorded in degrees. A high deviation from the target angle indicates a deficiency in proprioceptive sense.

  3. Muscle strength

    Time frame: Baseline

    Assessment for knee extensor and flexor muscles with isokinetic dynamometer at 60 º/sec and 240º/sec angular velocity. The peak torque value (Nm), which is measured by the device and indicates the maximum force the subject can reach, will be used in the assessment.

  4. Dynamic stability

    Time frame: Baseline

    The single leg dynamic stability test by the Biodex Balance System® (Biodex Medical Systems, Inc. USA). Low values of the stability index indicate better balance and stability, while higher scores indicate a lower ability to maintain postural stability.

Secondary outcomes

  1. Return to sports after ACL injury

    Time frame: Baseline

    The ACL Return to Sports after Injury (ACL-RSI) scale is a 12-item scale, scored from 0 to 10, that evaluates psychological readiness for return to sports after ACL injury. High scores indicate positive psychological readiness.

Study contacts

Contact information is provided by the study sponsor or research team.

Kubra Alpay, PhD

CONTACT

[email protected]

+902124012600 ext. 4638

Sponsors and collaborators

Lead sponsor

Bezmialem Vakif University

Other

Registry information

Official study title

Effect of Proprioception and Muscle Strength on Kinesiophobia After Anterior Cruciate Ligament Reconstruction

Important dates

Study start
2024
Primary completion
2026
Study completion
2026
First posted
Aug 6, 2024
Registry last updated
Jul 10, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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