Quiz 3 Review Flashcards
Tibialis Posterior Attachment’s
Inferior/Distal attachment: navicular tuberosity and surrounding bones (cuneiforms, cuboid, bases of the 2nd-4th MTs
Tibialis Posterior Actions
Action: Plantar Flexon
Action: Inversion
Flexor Hallucis Longus (FHL) Attachment’s
Inferior/Distal attachment: plantar surface of 1st distal phalanx
Flexor Hallucis Longus (FHL) Actions
Action: 1st MTP, 1st IP Flexion
Action: Plantar Flexion
Flexor Digitorum Longus (FDL) Attachment’s
Inferior/Distal Attachment: plantar surface of distal phalanges of lateral 4 toes
Flexor Digitorum Longus (FDL) Actions
Action: PIP/DIP, MTP flexion of 2nd-5th digits
Action: Plantar flexion
Tibialis Posterior, FHL, FDL tendons pass behind the ________________.
Medial Malleolus
What forms a tunnel called the tarsal tunnel?
Flexor Retinaculum
(Possible causes tarsal tunnel syndrome: Prolonged eversion/pronation, chronic tendonitis, direct trauma, RA)
What tendons can be referred to as Tom, Dick, Harry.
Tibialis Posterior, FHL, FDL
What is the only intrinsic foot muscle in the dorsum foot?
Extensor digitorum brevis
Extensor Digitorum Brevis Attachment
Inferior/Distal attachment: Medial distal 4 phalanges
Extensor Digitorum Brevis Action
Extension of the medial 4 toes
_____________ and ______________ are essentially the same muscle.
Extensor Digitorum Brevis, Extensor Hallucis Brevis
How many muscular layers are in the sole of the foot?
4
First layer in sole of the foot (most superficial)
-3 Muscles
-All attach proximately to the medial process of the calcaneus and plantar aponeurosis
-Deep to plantar fascia
What muscles are in the first layer in the sole of the foot?
Abductor Hallucis, Flexor Digitorum Brevis, Abductor Digiti Minimi
Abductor Hallucis Attachment
Inferior/Distal Attachment: medial side of the base of the proximal phalanx of the 1st toe
Abductor Hallucis Action
Action: abduction of the 1st toe
Flexor Digitorum Brevis Attachment
Inferior/Distal attachment: both sides of middle phalanges of 2nd-5th toes
-Note: the tendons split to attach to the sides of the phalanx
Flexor Digitorum Brevis Action
Flexion of 2nd-5th toes
Abductor Digiti Minimi Attachment
Inferior/Distal Attachment: Lateral side of the base of the proximal phalanx of the 5th toe
Abductor Digiti Minimi Action
Abduction of the 5th toe
How many muscles are in the second layer of the foot?
2
What tendons are in the second layer of the foot?
FHL and FDL
What are the muscles in the second layer of the foot?
Quadratus Plantae and Lumbricals,
Quadratus Plantae Attachment
Inferior/Distal Attachment: posterolateral margin of the FDL tendons
Quadratus Plantae Actions
Action: assists FDL in flexion of the lateral 4 digits
Action: adjusts the pull of the FDL tendons along the ling axis of the digits
-Note: the line of pull of FDL and how it would track medially so quadratus plantae helps to keep the vector more linear
Lumbricals Attachment
Inferior/Distal attachment: extensor expansion, and medial sides of proximal phalanges of the lateral toes
Lumbricals Action
Action: Flexion of the MTP joints and extension the PIPs/DIPs
How many muscles are in the 3rd layer of the sole of the foot?
3
3rd layer of the sole of the foot
-There are 3 muscles in the anterior 1/2 of the foot
-2 act on the 1st toe, the other on the 5th
What are the three muscles in the 3rd layer of the foot?
Flexor Hallucis Brevis, Adductor Hallucis, Flexor Digiti Minimi Brevis
Flexor Hallucis Brevis Attachment
Inferior/Distal attachment: both sides of the base of the proximal phalanx of the 1st toe
-There are 2 sesamoid bones - one adhered to each of the 2 tendons - they protect tendons from pressure during standing and walking
Adductor Hallucis Attachment
Inferior/Distal attachment (both heads): lateral side of the base of the proximal phalanx of the 1st toe
Adductor Hallucis Action
Action: adducts 1st toe
-Also helps maintain transverse arch
Flexor Digiti Minimi Brevis Attachment
Inferior/Distal attachment: base of the proximal phalanx of the 5th toe
Flexor Digiti Minimi Brevis Action
Flexion of the 5th MTP joint
4th layer of the sole of foot
-Deepest Layer
-Interossei muscles (DAB, PAD)
-Note: when discussing abduction and adduction of the toes, the ‘midline’ (reference point) is through the 2nd toe
How many muscles are in the fourth layer of the foot?
2
What are the 2 muscles in the fourth layer of the foot?
Dorsal Interossei, Plantar Interossei
Dorsal Interossei Attachments
Inferior/Distal attachment (1st): medial side of the proximal phalanx of the 2nd toe
Inferior/Distal attachments (2nd-5th): lateral sides of proximal phalanges 2nd-4th toes
Dorsal Interossei Action
Abduction of 2nd-4th MTP joints (DAB)
-moving the digits away from the 2nd toe
DAB
Dorsal Abduction
PAD
Plantar Adduction
Plantar Interossei Attachment
Inferior/Distal attachment: Medial sides of the bases of proximal phalanges 3-5
Plantar Interossei Action
Action: Adduction of the 3rd-5th MTP joints (PAD)
-moving the digits towards the 2nd toe
Patella
-Triangle Shaped Sesamoid
-Bone in tendon of the quad (Specifically Rec Fem)
Sesamoid
A bone embedded in a tendon (usually shaped like a sesame seed)
Patella (Anterior View)
-Base (the flat superior edge)
-Apex (the more pointed inferior edge)
Patella (Posterior View)
-Vertical Ridge
-Medial Articular Facet
-Lateral Articular Facet
*Facets articulate with the patellar surface of the femur and the medial and lateral condyles of the femur
What are the three articulations of the knee?
- Lateral condyle of the tibia articulates with the lateral femoral condyle
- Medial condyle of the tibia articulates with the medial femoral condyle
- Patella articulates with the femur
Available Movements of the Knee
-Flexion
-Extension
-Internal Rotation (Limited)
-External Rotation (Limited)
*Rotation occurs ONLY when Knee is flexed