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Importance of Jumping Ability in Handball Throwing Speed and Accuracy
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[The Throwing Shoulder].

Karl Wieser1, Christian Gerber1, Dominik C Meyer1

  • 11 Abteilung für Orthopädie, Universitätsklinik Balgrist, Zürich.

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PubMed
Summary
This summary is machine-generated.

Overhead athletes

Keywords:
GIRDGIRD (déficit de rotation interne glénohumérale)Inneres ImpingementSLAPSLAP (Superior Labrum Anterior and Posterior – lésions antéro-postérieures du labrum supérieur)ScapuladyskinesiaScapuladyskinesieWerferschulterdyskinésie scapulaireimpingement (frottement) internelesionposterior-superior internal impingementthrowing shoulderépaule du lanceur de poids

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Area of Science:

  • Sports Medicine
  • Orthopedic Surgery
  • Biomechanics

Background:

  • Overhead athletes subject their throwing shoulders to extreme stress during repetitive high-performance activities.
  • Throwing motions involve arm rotational speeds exceeding 7000°/s and joint forces over 1000 N.
  • These demands necessitate significant adaptations in the shoulder muscles and joint structure.

Purpose of the Study:

  • To analyze the kinematics and pathomechanics of the throwing shoulder.
  • To improve the understanding and treatment of specific shoulder problems in overhead athletes.
  • To investigate the mechanisms behind posterosuperior internal impingement and GIRD.

Main Methods:

  • Precise analysis of shoulder kinematics.
  • Detailed examination of throwing pathomechanics.
  • Evaluation of joint forces and rotational speeds.

Main Results:

  • Repetitive overhead performance leads to adaptations that can cause specific shoulder issues.
  • Identified two primary problems: posterosuperior internal impingement and decreased internal rotation (GIRD).
  • GIRD is associated with compensatory issues in scapula-stabilizing muscles.

Conclusions:

  • Understanding the precise kinematics and pathomechanics is crucial for addressing throwing shoulder injuries.
  • Specific adaptations in overhead athletes predispose them to impingement and range of motion deficits.
  • Further research into treatment strategies for these specific shoulder pathologies is warranted.