selected clinical presentations and review Flashcards
What nerve provides innervation to the interossei
lateral plantar nerve superficial- 4 and3rd interossei plus FDMB deep- adductor hallucis, 1-3 and 1-2 plantar and dorsal interossei. ALSO deep fibular nerve for DI 1 and 2
What artery supplies the interossei
Medial plantar for DI 1 and Lateral plantar and Dorsal MT arteries for DI #2-4, lateral plantar for all Plantar interossei’s
How many potential locations for joint deformity exist on the lesser toe
3
What deformity occurs in the saggital plane
claw foot @ MTPJ
alphabetical and proximal to distal order correspond to deformity
Where does claw toe occur
Primary- MTPJ hyperextension/hyperDORSIFLEXION and secondary- PIP flexion /plantarflexion
where does hammer toe occur at
PIPJ HP printer
where does mallet toe deformity take place
DIPJ plantarflexed
At MTP joint which flexors and extensors pull and disrupt balance
flexor: FDB, FDL, interossei, lumbricals
ext: EDB and EDL
At PIP joint what flexors and extensors pull to disrupt balance
flexor: FDB and FDL Ext- Int and lumb
At DIP joint, what flexors and extensor pull to disrupt balance
flexor- FDL Extensor- Int and lumb
At PIPS and DIPS, why are EDB and EDL not included
ONLY FDL tendons reaches DIP joint for extensors, int and lumbricals are at DIP
How does EDL contraction affect the extensor sling
dorsal aspect is pulled tight over the MT head. SLing is taut, running on lateral side, wing is slackened. Tendon is anchored and cannot extend IP joints unless other muscles act to keep the MTPJ from extending.
Contraction of what muscles can counteract MTPJ extension( loosen sling) and tighten the wing permitting interphalangeal extension?
Lumbricals and interossei can counteract or loosen sling/tighten wing and extend IPJ
achilles tendon reflex
S1/S2
