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A Novel Application of Musculoskeletal Ultrasound Imaging

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Rotational vs. Straight Landings: Exploring Task-Specific Responses to Inform ACL-Injury Risk Screening.

Parunchaya Jamkrajang¹, Sarit Suwanmana¹, Chuanpis Boonkerd²

¹College of Sports Science and Technology, Mahidol University, Nakhon Pathom, Thailand.

Journal of Human Kinetics

|March 2, 2026

Summary

This summary is machine-generated.

Rotational landings reveal key differences in lower-limb movement and forces, highlighting sex-specific responses important for anterior cruciate ligament (ACL) injury risk screening.

Keywords:

anterior cruciate ligament functional task injury screening sex differences

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Area of Science:

Biomechanics
Sports Medicine
Injury Prevention

Background:

Anterior cruciate ligament (ACL) injuries are common in team sports.
Rotational landing biomechanics and sex-specific responses are not well understood.
Understanding these factors is crucial for effective injury risk screening.

Purpose of the Study:

To investigate differences in lower-limb kinematics and kinetics between rotational and straight landings.
To explore sex-specific responses during rotational landing tasks.
To evaluate the utility of rotational and unilateral landings for ACL injury risk screening.

Main Methods:

Thirty-six healthy athletes (18 males, 18 females) performed straight and rotational landings from a box.
Lower-limb kinematics and ground reaction forces (GRFs) were recorded.
Data were analyzed for kinematic and kinetic characteristics.

Main Results:

Rotational landings showed increased hip flexion and peak vertical GRF compared to straight landings.
Significant sex-specific differences were observed in peak ankle dorsiflexion and time to peak vertical GRF during rotational landings.
Unilateral tasks influenced biomechanical characteristics and highlighted sex-specific differences.

Conclusions:

Rotational landings provide valuable insights into lower-limb biomechanics relevant to ACL injury risk.
Sex-specific differences in landing mechanics during rotational tasks are significant.
Incorporating rotational and unilateral landing elements can enhance ACL injury risk screening protocols.