Lower Extremity III

Question 1

Tibiotalar motion

Answer 1

. Dorsiflexion (minor post. Glide)
. Plantar flexion (minor ant. Glide)
. Side to side glide, rotation and ab/dduction as minor motions if ankle plantarflexed

Question 2

Combined hindfoot and subtalar motion

Answer 2

. Inversion-moving bottom of foot toward midline
. Eversion (opposite)
. Shock absorber joint

Question 3

Forefoot motion

Answer 3

. Ab/dduction

Question 4

Combined triplanar foot/ankle motions

Answer 4

. Pronation of foot: dorsiflexion of tibia on talus + eversion of subtalar joint + abduction of foot
. Supination: plantar flexion of tibia on talus + inversion of subtalar + adduction of foot

Question 5

Type 1 ankle sprain

Answer 5

. Only involved ATF

Question 6

Type 2 ankle sprain

Answer 6

. Involves ATF and calcaneofibular ligaments

Question 7

Type 3 ankle sprain

Answer 7

. ATF
. Calcaneofibular
. PTF

Question 8

Pure supination sprains of ankle will sprain what ligament?

Answer 8

. Only calcaneofibular ligament

Question 9

Talar restriction

Answer 9

. Resistance of talus to move to dorsiflexion
. Due to tight gastrocsoleus complex or dysfunction of talus under tibia
. Can contribute to tarsal and metatarsal dysfunction

Question 10

Plantar fasciitis

Answer 10

. Irritation of plantar aponeurosis
. Assoc. w/ tight gastroc and pes planus or pes cavus
. Symptoms worse in morning to after sitting for long time
. 60-70% patients have heel spur on x-ray

Question 11

External rotation of tibia normally glides distal fibula _____ and prox. Fibula ____

Answer 11

. Distal is posteriorly
. Proximal is anteriorly
. Internal rotation opposite