Knee joint coordination during single-leg landing in different directions

Area of Science:

• Biomechanics
• Sports Medicine
• Injury Prevention

Background:

• Knee joint coordination during jump landings is crucial for preventing injuries.
• Understanding how different landing directions affect knee and hip kinematics is essential.

Purpose of the Study:

• To investigate knee and hip kinematics in dominant and non-dominant limbs during single-leg jump landings in various directions.
• To analyze knee coordination during multi-directional jump landings.

Main Methods:

• 19 female volleyball athletes performed single-leg jump-landing tests in forward, diagonal, and lateral directions.
• Kinematic data were collected using a 10-camera Vicon system and ground reaction forces via an AMTI force plate.
• Knee and hip joint angles and velocities were calculated using a lower extremity model in Visual3D.

Main Results:

• Significant differences in angular velocity and knee flexion excursion were observed across jump directions (p < 0.001).
• Poorer knee coordination was noted in the lateral landing direction compared to forward and diagonal directions.
• The non-dominant limb demonstrated better coordination than the dominant limb during multi-directional jump landings.

Conclusions:

• Jump landing direction significantly influences knee coordination, with lateral landings posing a greater challenge.
• The dominant limb's poorer coordination suggests an elevated risk of injury compared to the non-dominant limb.
• These findings have implications for designing targeted injury prevention strategies in athletes.