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Do Neuromuscular Alterations Exist for Patients With Acetabular Labral Tears During Function?

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Summary
This summary is machine-generated.

Patients with symptomatic labral tears show altered muscle activity and contact forces during lunges. Addressing these muscle impairments may help restore function in affected individuals.

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Area of Science:

  • Biomechanics
  • Orthopedics
  • Sports Medicine

Background:

  • Symptomatic labral tears can affect lower limb biomechanics.
  • Understanding functional alterations during dynamic movements like lunges is crucial for rehabilitation.

Purpose of the Study:

  • To compare contact forces and electromyography (EMG) muscle amplitudes during lunges between patients with symptomatic labral tears and asymptomatic controls.

Main Methods:

  • Surface EMG recorded from gluteus medius, gluteus maximus, adductor longus, and rectus femoris during lunges.
  • Force platform data (contact time, impact force, force impulse) and knee flexion were measured.
  • Statistical analysis included t tests, Mann-Whitney U tests, and Spearman Rho correlations.

Main Results:

  • Reduced gluteus maximus EMG amplitudes during lunge ascent in patients with labral tears.
  • Increased vertical impact force, contact time, and force impulse in patients.
  • Inverse correlation between vertical impact force and gluteus medius EMG during lunge descent.

Conclusions:

  • Contact forces and EMG muscle amplitudes are significantly altered in patients with symptomatic labral tears during lunges.
  • The relationship between muscle activity and forces suggests potential for targeted interventions to improve function.