HAV ANGLES Flashcards
normal intermetatarsal angle (IMA)?
in adducted foot?
8-12 degrees
8-10 degrees
*bisection of 1st and 2nd metatarsals
metatarsus adductus angle (MAA) for rectus foot?
<15 degrees
*Relationship between long axis of 2nd met and the longitudinal bisection of the lesser tarsus
metatarsus adductus angle (MAA) for adducted foot?
> 15 degrees
*Relationship between long axis of 2nd met and the longitudinal bisection of the lesser tarsus
relationship between long axis of 2nd met and longitudinal bisection of the lesser tarsus?
normal adult?
pathologic?
5-17 degrees per McGlamry
20 degrees plus
how to measure an accurate IMA in the presence of MA?
IMA + (MAA-15 degrees) = true IMA
alternative way to measure met adductus
bisection of 2nd met and bisection of intermediate cuneiform
normal less than 24 degrees
engel’s angle
whats the hallux abductus angle (HAA)?
10-15 degrees
Bisection of 1st metatarsal and
proximal phalanx of hallux
hallux interphalangeus angle (HIPA)?
0-10 degrees
Bisection of the distal and
proximal phalanx of the
hallux
proximal articular set angle (PASA)?
0-8 degrees
relationship between
long axis 1st met and a
line connecting medial/lateral points of articular surface of methead
distal articular set angle (DASA)?
Rarely abnormal
relationship between long axis of phalanx and a line connecting medial/lateral points of articular surface of
base of phalanx
0-8 degrees
metatarsal protrusion distance (MPD)?
+/- 2mm
length of 1st met compared to 2nd
tibial sesamoid position,
normal?
1-4
position of sesamoid along axis of 1st metatarsal