other stuff Flashcards
what is the lateral talocalcaneal ligaments attachments?
lateral lateral process to lateral calcaneal process under the calcaneal fibular ligament
How much conjunct rotation occurs at the talocural?
30 degrees
Where is the MTP joint in relation to the web space?
its about 2.5 cm behind the web space
how many bones are in the foot?
26 primary, 2-5 sesmoids
What are the the functional units the foot?
- rear foot
- midfoot
- forefoot
How do you tension cervical ligament and innerossous of the subtalar joint
- inversion
2. eversion
How can the hip effect the medial longitudinal arch?
- weak external rotators lead to pronation
2. weak abductor will cause a valgus knee leading to pronation
Which bone is the key stone to the medial arch
the navicular bone
-the ligamentous structure holds up the arch
What are the attachments of the interosseus muscles of the foot?
- they lay dorsal to the deep transverse ligaments
2. they attach to the plantar ligaments of the first MTP joints
What is unique about the calcaneocuboid joint?
- it has a distinct fibrous capsule
2. the dorsal surface is thickened to form the dorsal calcaneoucuboid ligament
How dynamic stability of the transverse arch created?
- ADM spans the arch
- FL-elevates that anterior part of the calcaneous
- FB- increases height of the lateral arch during eversion
- TP-pulls the calcaneous the opposite direction of the FL
How do the distal and proximal tib fib joint surfaces differ?
- proximal is diarthrodial
2. distal is a syndesmosis
where would you expect tendonitis with a rear foot varus?
ankle supinators due to a increase pronation velocity and greater demand for eccentric control
where id you get a callus formation with rear foot varus?
under the met head because you tend to have a heel whip
What is a hammer toe?
Deformity of the toes with MTP ext or neutral, PIP flexion, DIP extension
What are claw toes?
Deformity with MTP ext with PIP and DIP flexion
What is mallet toe?
DIP flexion with neutral MTP and PIP
What is the callus formation with forefoot equinus
- first met because ti absorbs a lot of force
2. 5th met because first force 5th to hit hard
how much pronation shoulder you allow when fitting orthotics?
4 degrees
What complication can arise from a rigid forefoot valgus and rear foot varus?
opposing forces of supination from the forefoot and rearfoot create torsional stress to the mid foot
biomechanically what is happening the foot with pes planus
- calcaneous everts
- navicular tuberosity rotates down and becomes more prominent medially
- forefoot abducts
How does the achilles enthesis change as you age
there is less connective tissue between the achilles and plantar fascia
What muscles contribute to deceleration of pronation?
- tibialis anterior
- triceps surae
- posterior tib
- fibularis longus
how much energy is stored in the Achilles tendon?
- 23% with squat jump
- 17% with countermovement jumping
- 34%with hopping