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OpenTrials
Completed

NCT Number: NCT07538245

Prediction of Rectus Femoris Graft Size in ACL Reconstruction

This study aims to develop and validate a predictive model for estimating the diameter of a quadrupled rectus femoris tendon graft used in anterior cruciate ligament (ACL) reconstruction. By analyzing patient anthropometric characteristics and intraoperative tendon measurements, we aim to identify reliable predictors of graft size to improve preoperative planning and surgical decision-making.

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Key information

Conditions

Anterior Curciate Ligament

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Samsun University

Atakent, Samsun, 55200, Turkey (Türkiye)

About this study

Graft diameter is a critical determinant of success in anterior cruciate ligament (ACL) reconstruction. Smaller graft sizes have been associated with increased failure rates. While predictive models exist for hamstring tendon grafts, no validated model currently exists for rectus femoris tendon grafts.

This study seeks to develop a predictive algorithm for estimating the diameter of a quadrupled rectus femoris graft using patient-specific anthropometric and tendon-related variables.

Data will be collected prospectively (or retrospectively if applicable) from patients undergoing ACL reconstruction using rectus femoris tendon autografts. Statistical modeling, including multivariate regression analysis, will be used to identify independent predictors and generate a predictive formula.

The study also aims to evaluate the diagnostic performance of the model in identifying clinically adequate graft sizes (≥8 mm or ≥9 mm).

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • Patients aged 18 years or older
  • Undergoing primary ACL reconstruction
  • Use of rectus femoris tendon autograft
  • Availability of complete anthropometric and intraoperative data

Exclusion criteria

  • Incomplete dataset

Treatment and study plan

Primary outcomes

  1. Quadrupled rectus femoris graft diameter (mm)

    Time frame: Baseline

    Measured intraoperatively using standard graft sizing tubes

Secondary outcomes

  1. Prediction accuracy (difference between predicted and actual graft diameter)

    Time frame: Baseline

    difference between predicted and actual graft diameter

Sponsors and collaborators

Lead sponsor

Samsun University

Other

Collaborators

  • Dokuz Eylul University

Registry information

Official study title

Prediction of Quadrupled Rectus Femoris Graft Diameter Using Anthropometric and Tendon Parameters

Important dates

Study start
2026
Primary completion
2026
Study completion
2026
First posted
Apr 20, 2026
Registry last updated
Jul 14, 2026

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.