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The lateral impaction of the shoulder
M M Scarlat1, C Cuny, B A Goldberg
1Service de Chirurgie Orthopédique et Traumatologique, Centre Hospitalier Général, Hyères-les-Palmiers, France. mscarlat@ch-hyeres.fr
International Orthopaedics
|February 1, 2000
Summary
Lateral shoulder impacts can cause clavicle, scapula, and rib injuries. Force transmission through the shoulder girdle may lead to severe thoracic and neck trauma.
Area of Science:
- Orthopedics
- Biomechanics
- Trauma Surgery
Background:
- Lateral shoulder impacts are common causes of injury.
- Understanding force transmission is crucial for diagnosing severe trauma.
Purpose of the Study:
- To analyze radiographic evidence of shoulder girdle injuries.
- To propose a biomechanical hypothesis for impact force transmission.
Main Methods:
- Radiographic review of 17 patients with lateral shoulder impact injuries.
- Analysis of injury patterns to the clavicle, scapula, and ribs.
Main Results:
- Injuries involved the clavicle, scapula, and ribs in all 17 patients.
- A two-path force transmission hypothesis was proposed: anterior/superior and posterior/inferior.
- Disruption of both anterior and posterior arches increases risk of severe injuries.
Conclusions:
- Lateral shoulder impacts generate forces transmitted through distinct pathways in the shoulder girdle.
- Damage to the shoulder girdle's anterior and posterior arches elevates the risk of significant thoracic, brachial plexus, and neck injuries.