Section 21: Tendon / Ligament - Structure and Properties 21-1 Why - - PowerPoint PPT Presentation

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Oct 15, 2022 277 likes •422 views

Section 21: Tendon / Ligament - Structure and Properties 21-1 Why Ligaments? y g Important anatomical structures Guide joint motion Guide joint motion Check rein Proprioceptive feedback Relative simplicity

SLIDE 1

Section 21: Tendon / Ligament - Structure and Properties

21-1

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Why Ligaments? y g

Important anatomical structures

– Guide joint motion Guide joint motion – Check rein – Proprioceptive feedback

Relative simplicity

– Biologically

Everybody has them and hurts them
Everybody has them and hurts them

– Anatomically – Mechanically

Accessible (surgically)
Easy to test (mechanically)

Display typical soft tissue behavior

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21-2 From: Vanderby

Display typical soft tissue behavior

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Composition Composition

Tendons and ligaments are parallel-

Tendons and ligaments are parallel fibered collagenous tissues

Low cellularity (fibroblasts, <20% of

Low cellularity (fibroblasts, 20% of volume)

Water = 70% of wet weight

Water 70% of wet weight

Solid matrix = 30% of wet weight

– Collagen (>75% of dry weight) Collagen (>75% of dry weight) – Elastin – Ground substance

21-3 From: Iatridis

Ground substance

SLIDE 4

21-4 From: Garner

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Ligament Hierarchy

21-5 From: Vanderby

Frank et al., in Woo and Buckwalter, 1987

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Ligament Fibers from SEM Ligament Fibers from SEM

21-6 From: Vanderby

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21-7 From: Garner

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21-8 From: Iatridis

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21-9 From: Garner

SLIDE 10

21-10 From: Garner

SLIDE 11

21-11 From: Iatridis

SLIDE 12

21-12 From: Materials and Textiles