Exam 4 Remaining Material Flashcards
Crural fascia
Deep and superficial fascia of leg
Crural fascia thickens to form ___ which functions to __
Retinacula
Keep tendons that cross ankle joint in place
Superior and inferior extensor retinacula
Bind tendons of anterior leg muscles and prevents tendons from bowstringing when foot is dorsal flexed
Fibular retinacula
Bind down tendons of lateral leg muscles
Flexor retinaculum
Bind down tendons of deep posterior leg muscles
Interosseous membrane connects interosseous borders of __ and ___
Tibia and fibula
Functions of interosseous membrane
- Serves at attachment for muscles
2. Stabilizes tibia and fibula
Movements of foot at ankle joint
Plantar flexion
Dorsal flexion
Movements of foot at subtalar joint
Eversion (pronation)
Inversion (supination)
Arches of foot
Medial longitudinal
Lateral longitudinal
Transverse
Deep fibular nerve supplies what anterior leg muscles?
Tibialis anterior
Extensor digitorum longus
Fibularis tertius
Extensor Hallucis longus
Compartment syndrome
Result from increased pressure within myofascial compartment, resulting in ischemia and pain
Acute compartment syndrome
Commonly occurs due to trauma
Chronic compartment syndrome
Exercise related
AKA: external compartment syndrome (ECS)
Compartments of leg most frequently affected in chronic compartment syndrome
Anterior and deep posterior
Shin splints
Pain along tibia, involving tibialis anterior
AKA: medial tibial stress syndrome (MTSS)
Segmental innervation of common fibular nerve
L4, L5, S1, S2
Common fibular nerve divides into
Superficial fibular nerve
Deep fibular nerve
Branches of common fibular nerve
- Sural communicating
- Lateral sural cutaneous
- Articular
Sural communicating nerve joins ___ to supply ___
Sural branch of tibial nerve
Supply skin on posterior aspect of leg
Lateral sural cutaneous branch supplies
Skin on proximal lateral posterior aspect of leg
Articular branch supplies
Knee joint
Injury to common fibular nerve may result in
Loss of dorsal flexion (foot drop) Loss of eversion of foot Loss of extension of toes Diminished foot inversion Loss of sensation over dorsum of foot and lateral aspect of leg
Deep fibular nerve segmental innervation
L4, L5, S1