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Biomechanics OINA 1 > Biomechanics OINA 1 > Flashcards

Biomechanics OINA 1 Flashcards

0
Q

Peroneus Brevis

insertion

A

Lateral aspect of the tuberosity at the base of the 5th metatarsal

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1
Q

Perineum Brevis

origin

A

Distal 2/3 of the lateral shaft of the fibula

Adjacent inter muscular septum

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2
Q

Peroneus Brevis

innervation

A

Superficial fibular n

L4-S1 (S1)

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3
Q

Peroneus Brevis

Action

A

Eversion

Assists plantar flexion

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4
Q

Peroneus longus

Origin

A

Head and proximal 2/3 lateral shaft of fibula

Often also lateral tibial condyl and tub/fib capsule

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5
Q

Peroneus Longus

Insertion

A

Medial aspect of plantar surface of 1st metatarsal and 1st cuneiform

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6
Q

Peroneus Longus

Innervation

A

Superficial fibular n

L4-S1) (S1

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7
Q

Peroneus Longus

Action

A

Plantar flexion

Eversion of foot

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8
Q

Peroneus Tertius

Origin

A

Distal 1/3 anterior fibula and adjacent interosseous membrane

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9
Q

Peroneus Tertius

insertion

A

Dorsal shaft/base 5th metatarsal

Tendon emerges below inferior extensor retinaculum lateral to ext. digitorum tendon then diverts laterally on dorsolateral foot

Sometimes absent

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10
Q

Peroneus Tertius

Innervation

A

Deep fibular/peroneal n

L4-S1 mainly S1

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11
Q

Peroneus Tertius

Action

A

Assist dorsiflexion

Eversion

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12
Q

Tibialis Anterior

Origin

A

Lateral condyle and anterolateral proximal 2/3 shaft of tibia

Adj interosseous membrane

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13
Q

Tibialis anterior

Insertion

A

Medial 1st cuneiform

Adjacent 1st metatarsal base

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14
Q

Tibialis anterior

Innervation

A

Deep peroneal/fib nerve

L4-L5

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15
Q

Tibialis anterior

Action

A

Dorsiflex and invert/supinate the foot

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16
Q

Tub ant

Kinesiologic function

A

Support medial longitudinal arch (eccentric)

Control pronation

Peak contraction is contact period

Etc etc

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17
Q

Extensor digitorum Longus

Origin

A

Lateral tibial condyle

Proximal tibia fibular joint capsule

Proximal 2/3 of anteromedial fibular shaft

Adjacent interosseous membrane

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18
Q

Extensor digitorum Longus

Insertion

A

Extensor good on Dotson of each toe. –> insert on middle phalanges of toes 2-5

(E.D.B. Joins E.D.L. In toes 2-4)

19
Q

Extensor digitorum Longus

Innervation

A

Deep peroneal/fibular nerve

L4-S1

20
Q

Extensor digitorum Longus

Action

A

Extend two joints 2-5

Assists dorsiflexion and eversion

21
Q

Ext dig long

Key Kinesiological function

A

Most important during swing phase

Prevent toe drag

22
Q

Extensor hallucis Longus

Origin

A

Middle anterior shaft of fibula

Adjacent interosseous membrane

(M. Belly deep to EDL and tub ant— not palpable except tendon on any ankle and dorsal foot)

23
Q

Extensor hallucis Longus

Insertion

A

Distal phalanx of the hallux

24
Q

Extensor hallucis Longus

Innervation

A

Deep peroneal n

L4-S1

(Strength considered indicator of L5)

25
Q

Ext. hallucis Longus

Action

A

Extend/dorsiflex big toe (with help of Brevis)

26
Q

Tibialis posterior

Origin

(Member of deep posterior compartment)

A

Posterior lateral shaft of tibia

Proximal medial shaft of fibUla

Intervening interosseous membrane

27
Q

Tib post

Insertion

A

Like EDL, it has 8 insertions

Navicular and 1st cuneiform
Expansions to 2-3rd cuneiforms
2-4 metatarsal bases
Cuboid

Palpable posterior to medial malleolus

28
Q

Tib post

Innervation

A

Tibial n

L4-S1

29
Q

Tib post

Action

A

Inversion foot

Addiction foot

Plantar flex ankle

30
Q

Tib post

Key kin function

A

Support (suspensor & tie beam) medial longitudinal arch

Important to weight bearing on forefoot during take off

Locks subtalar jnt as heel rises and eccentric control of pronation at takeoff

31
Q

Gastroc.

Origin

A

Posterior femur

Medial head—> superior medial condyle

Lateral head—> superior lateral condyle

32
Q

Gastroc

Insertion

A

Tuberosity on post calcaneus

(Superior part separated from tendon by retrocalcaneal bursa

33
Q

Gastroc

Innervation

A

Tib n.

L5-S2 (L5-S1)

34
Q

Gastroc

Action

A

Plantar flexion

Assist hammie’s and popliteus in flexing knee

Especially during terminal extension in closed kinetic chain (=paradoxical knee extension)

35
Q

Gastroc

Key Kinesiological function

A

Meh too lazy

36
Q

Soleus

Origin

A

Posterior head, neck and proximal 1/3 shaft fibula

Posteriormedial shaft along popliteal/soleal line

Posterior to proximal end of medial crest of tibia

37
Q

Soleus

Insertion

A

Achilles tendon

Middle part of calcaneal tuberosity

38
Q

Soleus

Innervation

A

Tib n.

L5-S2

39
Q

Soleus

Action

A

Plantr flex foot

40
Q

Soleus

Key kines. Function

A

Meh too lazy again. :/

41
Q

Popliteus

(Most proximal member of deep posterior comp. of knee)

Origin

A

Lateral aspect of the lateral femoral condyle

Adjacent arcuate ligament and posterior capsule

Popliteofibular ligament forms along it’s anterolateral margin

42
Q

Popliteus

Insertion

A

Goes obliquely inferomedially to insert on posterior aspect of the proximal tibia above the popliteal/soleal line

Attaches to the lateral meniscus as it crosses lateral to medial also

43
Q

Popliteus

Innervation

A

Tibial nerve

L4-S1

44
Q

Popliteus

Action

A

Internally rotates tibia in an open kinetic chain

and externally rotates the femur when tibia is fixed (closed kinetic chain)

Assists knee flexion

Knee stabilizer

45
Q

Popliteus

Key Kinesiological function

A

Unlocks externally rotated tibia at initiation of flexion from fully extended

Most important stabilizer of lateral knee at extremes of external tibial rotation through its action and tensing popliteofib ligament

Stabilize fib when squatting….

Etc etc etc

Biomechanics OINA 1 (1 decks)

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