Download Mechanisms of Injuries

Mechanisms
Soft Tissue Trauma
Critical Thinking
• A baseball player slides into home base,
severely scraping the skin on the left side of
his thigh. What is the force and type of
injury produced?
• A shortstop is hit in the shin by a batted ball
that took a bad hop. What is the force and
type of injury sustained by this athlete?
Purpose
• Provide foundation for:
– Identification
– Understanding
– Management of sports injuries.
3 Primary Tissue Stresses
• Tension: force that pulls or stretches tissue
• Compression: crushes tissue
• Shearing: moves across the parallel
organization of the tissue.
Contractile vs Non Contractile
• Contractile
–
–
–
–
Part of the muscle:
Muscle
Tendon
Bony insertion
• Non Contractile
–
–
–
–
–
–
–
Skin
Joint capsules
ligaments,
Fascia
Cartilage
Dura mater
Nerve roots
Your skin
• First defense to
infection and or
disease
• water proof
• trauma is visually
exposed and is
called a wound
• non-contractile
• Friction Blister:
• Moi: continuous rubbing.
• S/S: fluid, bubble
• Skin Bruise
• MOI: blow, crushing
• S/S: bleeding
• Abrasion
• MOI: scraping
against rough
surface.
• S/S: skin is torn
away or reddened
• Laceration
• MOI: tearing
• S/S: irregularly
torn
• Skin Avulsion
• MOI: tearing
• S/S: tissue is
completely ripped
from source
Incision
MOI: cutting
S/S: skin has been sharply cut
• Puncture Wound
• MOI: compression
• S/S: penetration of
skin by sharp object
In review
• What are
some
different Soft
tissue
mechanical
forces?