Angles Flashcards
Hallux Interphalangeal angle
0-10
DASA
7.5
PASA
7.5
Types of joint deformities (3)
Congruent- joint lines are parallel
Deviated- joint lines intersect outside of joint
Subluxed- joint lines intersect inside joint
Hallux abductus angle
10-15
IM angle
8-12
Procedure determination by angle size
Mild (8-12)= head procedure
Moderate (14-17)= shaft procedure
Severe (18-21) = base procedure
Lapidus if hypermobile
Metatarsus adductus
<20
True IM angle (calculation)
(metatarsus adductus angle -15)+ IM angle
1st metatarsal protusion distance
+/- 2mm compared to 2nd met
Tibial sesamoid position
1-3
ROM 1st MTPJ
65 dorsiflexion
40 plantarflecion
1st met- medial cuneiform angle
22
1st ray ROM
5 mm dorsiflexion + 5 mm plantarflexion
Fallat and Buckholz 4th IM angle
normal- 6
pathologic-8.7
Fallat and Buckholz lateral deviation angle (lateral bowing)
normal-2.64
pathologic- >8
Metatarsal declination angle
21
Metatarsal abductus angle
0-15
Splayfoot: 1st and 4th IM angles
1st IM: >12
4th IM>8
Talar neck angle (birth vs adult)
Birth (130-140)
Adult (150-165)
Talar head and neck
plantarflexion: 25-30
Medially aligned to body 15
Talar torsion angle
head to body for fetus child, and adult
Fetus: 18-20
Childhood: 30
Adult 40
Talar declination angle
effects of pronation and supination
Normal is 21
pronation increases and supination decreases
Meary angle
Need to see on lateral view
Intersection of longitudinal axis of talus and 1st metatarsal. normal 0
Increases with pronation or supination
Cyma line
effects of pronation and supination
S-shaped line formed by articulation of TN and CC joints.
Pronation moves anteriorly
Supination moves posteriorly
Talonavicular joint (coverage)
normal 75% coverage
Pronation decreases coverage
Supination increases coverage
Forefoot abductus
Normal 0-15
Calcaneal inclination angle (effect of pro and sup)
Normal 21
Pronation decreases
supination increases
Hibb angle
lateral view
intersection of longitudinal axis of calcaneus and 1st met
Fowler Philip
Definition- angle formed from the intersection of a line along the anterior tubercle and the plantar tuberosity and another line along the posterosuperior prominence at the achilles tendon insertion
Normal- <70
Haglunds >75
Total angle of Ruch
fowler philip angle +calcaneal inclination
normal 90
haglunds >90
Calcaneal cuboid abduction
normal: 0-5
increases with pronation
Kite angle (infant) Effects of pronation and supination
Talocalcaneal (AP view)
Infant 30-50
Adult 20-40
Pronation increases
Supination decreases
Talocalcaneal
Lateral view
25-50
STJ axis direction
Neutral- goes through 1st ray
Supination: 2nd ray
Pronation- medial to 1st ray
STJ axis of motion
Frontal- 48
Transverse- 42
Sagittal- 16
STJ ROM
2/3 inversion and 1/3 eversion
Longitudinal midtarsal joint
Frontal- 75
Transverse- 15
Sagittal- 9
Oblique Midtarsal joint
frontal- 38
Transverse- 52
Sagittal- 57
Bohler angle
angle formed by the intersection of:
1) line from superior part of anterior process and superior part of the posterior facet
2) superior aspect of the posterior facet to superior point of the calcaneal process
25-40
Gissane Angle
angle formed by the intersection of:
1) posterior facet
2) and another line along the middle and anterior facets
