Plantar Foot: Part 3 Flashcards

(57 cards)

1
Q

Nerve supply to plantar foot

A
  • Medial/lateral plantar nerves
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2
Q

Lateral plantar nerve location

A
  • Found between layers 1 and 2

- Medial to lateral plantar artery

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3
Q

Lateral plantar nerve motor innervation

A
  • Abductor digiti minimi
  • Quadratus Plantae
  • Lumbricals (2-4)
  • Adductor hallucis
  • Flexor digiti minimi brevis
  • Opponens digiti minimi
  • Plantar and dorsal interossei
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4
Q

Lateran plantar nerve cutaneous innervation

A
  • Lateral 1/3 of midfoot and forefoot

- Plantar aspect of lateral 1 ½ toes and dorsal nailbeds

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5
Q

Lateral plantar nerve articular innervation

A
  • Calcaneocuboid
  • Lateral cuneonavicular
  • 3rd cuneometatarsal
  • Lateral intercuneiform (between intermediate and lateral cuneiform)
  • Cuneocuboid
  • Cuboidonavicular
  • 2-5th MTP joint
  • 2-4th intermetatarsal joint
  • 5th IP joint
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6
Q

Lateral plantar nerve branches to

A
  • ADM muscle (inferior calcaneal nerve; “Baxters nerve”)

- QP muscle

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7
Q

Superficial branch (lateral plantar nerve) muscular innervation

A
  • FDMB
  • 3rd plantar interosseous
  • 4th dorsal interosseous
  • (Interossei in the 4th intermetatarsal space)
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8
Q

Superficial branch (lateral plantar nerve) articular innervation

A
  • 4th and 5th MTP
  • 4th intermetatarsal joint (between 4th and 5th met bases)
  • 4th and 5th IP joints
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9
Q

Superficial branch (lateral plantar nerve) cutaneous innervation

A
  • Lateral plantar foot
  • Lateral and medial plantar 5th toe
  • Lateral plantar 4th toe
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10
Q

Deep branch (lateral plantar nerve) pathway

A
  • Passes deep to adductor hallucis

- Between layers 3 and 4

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11
Q

Deep branch (lateral plantar nerve) muscular innervation

A
  • Lumbricals 2-4
  • Adductor hallucis
  • Plantar interossei 1-2
  • Dorsal interossei 1-3
  • (Interossei in the 1st – 3rd intermetatarsal spaces)
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12
Q

Deep branch (lateral plantar nerve) articular innervation

A
  • 2nd and 3rd intermetatarsal joints (between 2nd and 3rd and 3rd and 4th metatarsal bases)
  • 2-4 MTP joints
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13
Q

Branches of superficial branch

A
  • Proper plantar digital nerve 10
  • 4th common plantar digital nerve
  • Communicating branch
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14
Q

Proper plantar digital nerve 10

A
  • Lateral plantar cutaneous of 5th digit
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15
Q

4th common plantar digital nerve pathway

A
  • 4th intermetatarsal space
  • Passes plantar to deep transverse metatarsal ligament
  • Becomes cutaneous near MTP joint
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16
Q

Communicating branch

A
  • Connects with 3rd common digital plantar nerve from medial plantar
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17
Q

Proper plantar digital nerves innervate

A
  • Nailbeds and dorsum of the distal digits
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18
Q

Medial plantar nerve pathway

A
  • Larger than lateral plantar nerve
  • Lateral to medial plantar artery
  • Passes within the 1st layer between abductor hallucis and FDB muscles (deep to abductor hallucis)
  • Some also say between layers 1 and 2
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19
Q

Medial plantar nerve motor innervation

A
  • Abductor hallucis
  • FDB
  • FHB
  • 1st lumbrical
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20
Q

Medial plantar nerve cutaneous innervation

A
  • Medial 2/3 of midfoot and forefoot

- Plantar aspect medial 3 ½ toes and dorsal nailbeds

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21
Q

Medial plantar nerve articular innervation

A
  • Talonavicular, cuneonavicular (medial and intermediate cuneiforms)
  • Medial intercuneiform (between medial and intermediate)
  • Joint between medial cuneiform and base of 2nd metatarsal
  • IP joints of digits 1-4
  • 1st MTP joint
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22
Q

Medial plantar nerve innervation and branching

A
  • Abductor hallucis
  • FDB
  • Branches into medial and lateral branches
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23
Q

Proper plantar digital nerve 1 (of hallux)

A
  • Cutaneous of plantar medial hallux
  • Also called the medial branch of the medial plantar nerve
  • Also supplies motor branch to FHB
24
Q

1st-3rd common plantar digital nerves pathway

A
  • Travel in their respective metatarsal spaces
  • Plantar pass plantar to deep transverse metatarsal ligament
  • Becomes cutaneous near MTP joint
  • Arise from the lateral branch of medial plantar nerve
  • Give off proper digital plantar nerves
25
1st common plantar digital nerve (1st metatarsal space) motor supply
- FHB | - 1st lumbrical
26
2nd Common plantar digital nerve (2nd intermetatarsal space) cutaneous supply
- Proper plantar digital nerve 4: lateral plantar aspect of 2nd toe - Proper plantar digital nerve 5: medial plantar aspect of 3rd toe
27
3rd common plantar digital nerve (3rd intermetatarsal space) cutaneous supply
- Proper plantar digital nerve 6: lateral plantar aspect of 3rd toe - Proper plantar digital nerve 7: medial plantar aspect of 4th toe - Receives communicating branch from lateral plantar nerve
28
The proper plantar digital nerves give off
- Articular branches to MTPJ and IPJ of their respective digits
29
Proper digital nerves can also be called by what they innervate
- Medial plantar cutaneous nerve of the hallux - Lateral plantar cutaneous nerve of the hallux - Medial plantar cutaneous nerve of the 2nd toe/digit - Lateral plantar cutaneous nerve of the 2nd toe/digit - Etc…….
30
Dorsal digital nerves can also be called by what they innervate
- Medial dorsal cutaneous nerve of the 2nd toe | - Medial dorsal digital nerve of the 2nd toe
31
Dorsal digital nerves can also be called by what they branch from
- Lateral branch of the 2nd common plantar digital nerve | - Medial branch of the 4th common plantar digital nerve
32
Arterial supply to plantar foot
- Lateral and medial plantar arteries | - Branch from posterior tibial within tarsal tunnel
33
Lateral plantar artery
- Larger than medial plantar artery - Passes thorough porta pedis - Passes between muscle layers 1 and 2 through the calcaneal compartment - Angled toward 5th met styloid process
34
Branches of lateral plantar artery
- Calcaneal branches - Anastomotic branches to lateral tarsal and lateral malleolar plexus - Proper plantar digital artery 10 (of the 5th digit): supplies lateral plantar 5th digit - Deep Plantar Arch
35
Deep plantar arch
- Continuation of lateral plantar artery at 5th met base - Passes along met bases medially between oblique head adductor hallucis and plantar interossei - Between layers 3 and 4
36
Deep plantar arch anastomoses with
- Deep plantar artery (terminal branch of dorsalis pedis)
37
Deep plantar arch gives off (plantar)
- 4 plantar metatarsal arteries that travel in intermetatarsal space in the interosseous compartment - Gives rise to 8 plantar digital proper arteries
38
Deep plantar arch gives off (perforating)
- 1 proximal and 1 distal perforating artery per intermetatarsal space - Both anastomose with dorsal metatarsal artery counterpart - The proximal connects with deep plantar arch - Sometimes absent
39
4th plantar metatarsal artery branches
- Proper plantar digital artery 9 | - Proper plantar digital artery 8
40
3rd plantar metatarsal artery branches
- Proper plantar digital artery 7 | - Proper plantar digital artery 6
41
2nd plantar metatarsal artery branches
- Proper plantar digital artery 5 | - Proper plantar digital artery 4
42
1st plantar metatarsal artery arises
- At the anastomosis between deep plantar and deep plantar arch
43
1st plantar metatarsal artery branches
- Proper plantar digital artery 3 - Proper plantar digital artery 2 - Anastomosing branch branch to 1st proper plantar digital
44
Medial plantar artery pathway
- Anterior branch of posterior tibial artery - Smaller than lateral plantar - Pass through porta pedis - Passes between abductor hallucis and FDB within the 1st layer
45
Superficial medial branch (medial plantar artery) pathway
- 1st Proper plantar digital artery (of hallux): supplies medial plantar hallux - Anastomotic connection from 1st plantar metatarsal artery - Passes dorsal to FHL tendon
46
Superficial lateral branch (medial plantar artery) pathway
- Superficial plantar digital branches | - Anastomoses with 1st – 3rd plantar metatarsal arteries
47
Deep branch of medial plantar artery
- Forms anastomoses with deep plantar arch and dorsal circulation
48
Malleolar arterial plexuses
- Arterial plexuses formed around the malleoli - Each formed by 5 (6) arteries Supplies the ankle
49
Medial malleolar arterial plexus
- Anterior medial malleolar artery - Posterior medial malleolar artery - Branch from medial tarsal artery - Branch from medial plantar artery - Branch from medial calcaneal artery
50
Lateral malleolar arterial plexus
- Anterior lateral malleolar artery - Posterior lateral malleolar artery - Branch from lateral tarsal artery - Branch from lateral plantar artery - Branch from lateral calcaneal artery - Perforating fibular artery can also be included
51
Ankle blood supply is derived from
- Fibular - Anterior/posterior tibial - Dorsalis pedis - Medial/lateral plantar plantar arteries
52
Medial/lateral planter nerve pathway
- Branch in the tarsal tunnel (from tibial, deep to flexor retinaculum) - Passes through tarsal tunnel - Exits porta pedis to enter foot
53
Lateral plantar nerve divides into
- Superficial/deep branches | - Around base of 5th met
54
Proper planter digital nerve 10 cutaneous innervation
- Plantar lateral 5th toe - Digital tuft - Nail
55
Proper plantar digital nerve 10 motor innervation
- FDMB - 3rd plantar interosseous - 4th dorsal interosseous
56
4th common plantar digital nerve branches
- 8th proper plantar digital nerve (lateral plantar 4th toe) | - 9th proper plantar digital nerve (medial plantar 5th toe)
57
1st common plantar digital nerve (1st metatarsal space) cutaneous
- Proper plantar digital nerve 2: lateral plantar aspect of hallux - Proper plantar digital nerve 3: medial plantar aspect of 2nd toe