Download MBBS Anatomy PPT 84 Arches Of Foot Notes

Download MBBS (Bachelor of Medicine, Bachelor of Surgery) Human Anatomy ppt lectures Topic 84 Arches Of Foot Notes. - anatomy ppt free download human anatomy ppt lectures, medicine notes ppt, anatomy handwritten notes pdf, mbbs 1st year anatomy notes pdf download, best anatomy notes pdf, human anatomy notes pdf, anatomy easy notes pdf, anatomy notes online, anatomy short notes, Anatomy ppt, Powerpoint Presentations and lecture notes.

FUNCTIONS OF FOOT

Support body weight
Serves as a lever to propel

the body forward in walking

& running

FUNCTIONS OF FOOT

IF THE FOOT

Gastrocnemius & plantaris

POSSESSED A

SINGLE BONE

It cannot adapt itself

to uneven surfaces

Its propulsive action

depends entirely on

gastrocnemius &

plantaris

BUT


FUNCTIONS OF FOOT

IF THE FOOT IS

FORMED OF

SMALL BONES

& MANY

JOINTS

It can adapt itself

to uneven surfaces

Long flexors &

small muscles of

foot assist in

propulsive action

WHY THERE ARE ARCHES?

A segmented structure can hold up weight

only if it is built in the form of arches

Weight will be distributed on: 1) the heel

(behind) & 2) heads of metatarsal bones (in

front): pressure will be minimized on nerves

& vessels in sole

Forward propulsive action will be easier


FOOT DIVISION

Hind-foot

Mid-foot

forefoot

CLASSIFICATION OF ARCHES

? A. Longitudinal

1. medial

2. lateral
? B. TRANSVERSE

1. ANTERIOR

2. POSTERIOR


ARCHES OF FOOT

MEDIAL

LONGITUDINAL

ARCH:

Higher than lateral

arch

Formed of:

calcaneum, talus

(key stone),

navicular, three

cuneiform & first

three metatarsal

bones

ARCHES OF FOOT

LATERAL

LONGITUDINAL

ARCH:

Lower than medial

arch

Formed of: calcaneum,

cuboid (key stone),

fourth & fifth

metatarsal bones


ARCHES OF FOOT

TRANSVERSE ARCH:

It is only half an

arch

It is formed of:

bases of metatarsal

bones, cuboid &

three cuneiform

bones

FACTORS MAINTAINING

ARCHES OF FOOT

Shape of bones
Strength of ligaments
Tone of muscles


MECHANISM OF ARCH SUPPORT

SHAPE OF

BONES

Bones are wedge-shaped

with the thin edge lying

inferiorly

This applies particularly

to the bone occupying

the center of the arch

"keystone"

MECHANISM OF ARCH SUPPORT

INFERIOR

EDGES OF

BONES ARE

TIED

TOGETHER


MECHANISM OF ARCH

SUPPORT

INFERIOR EDGES OF BONES

ARE TIED TOGETHER

Medial longtitudinal arch: plantar

calcaneonavicular ligament, tibialis

posterior

Lateral longtitudinal arch: long & short

plantar ligaments

Transverse arch: deep transverse ligaments,

transverse head of adductor hallucis, dorsal

interossei

MECHANISM OF ARCH SUPPORT

TYING THE

ENDS OF THE

ARCH

TOGETHER


MECHANISM OF ARCH

SUPPORT

TYING THE ENDS OF THE ARCH

TOGETHER

Medial longtitudinal arch: plantar

aponeurosis, medial part of flexor

digitorum longus & brevis, flexor

hallucis longus, flexor hallucis brevis,

abductor hallucis

Lateral longtitudinal arch: plantar

aponeurosis, lateral part of flexor

digitorum longus & brevis, abductor

digiti minimi, flexor digiti minimi

Transverse arch: peroneus longus

MECHANISM OF ARCH SUPPORT

SUSPENDING

THE ARCH

FROM ABOVE
MECHANISM OF ARCH

SUPPORT

SUSPENDING THE ARCH

FROM ABOVE

Medial longtitudinal arch:

tibialis anterior, tibialis

posterior, medial ligament of

ankle joint

Lateral longtitudinal arch:

peroneus longus, peroneus

brevis

Transverse arch: peroneus

longus

PES PLANUS (FLAT FOOT)

A condition in which the medial

longitudinal arch is depressed

The forefoot is everted

The head of talus is forced downward &

medially

The causes are both congenital and

acquired