Radiograph Evaluation Flashcards
Nl calcaneal inclination angle
18-21
normal talar declination angle
21
Normal subtalar joint axis
42 degrees up from transverse plane
16 degrees medial from sagittal plane
The more vertical the subtalar joint axis=increase in ____
transverse plane motion
The more horizontal the STJ axis=increase in _____
frontal plane motion
The more parallel the STJ axis to the sagittal plane=increase in _____
frontal plane motion
The more parallel the STJ axis to the frontal plane=increase in____
sagittal plane motion
Nl Kites angles
Ages 0-15=35-50
Ages 5-adult= 15-35
Kites angle is ____ in STJ pronation and supination
increased in STJ pronation
decreased in STJ supination
Transverse plane function is represented in the change in the relationship between what?
the calcaneus and the talar head
What is the purpose of calcaneal axial and Harris Beath x-rays?
evaluate the posterior calcaneus, evaluate the relationship of the calcaneus and tibia, evaluate the STJ
Normal tibial influence in frontal plane
0-7 degrees
What does the Harris Beath view allow?
visualization of the middle and posterior facets
What is the normal calcaneal position when a kid begins to walk (10-14 mo)
6 degrees heel valgus
What is the ideal position of the calcaneus by 13?
4-5 degrees inverted (varus)
What do you see on x-ray in pes cavus?
increased calcaneal inclination angle, decreased talar declination angle, increased 1st met bisection, inverted calcaneus
What do you see on x-ray in pes planus?
decreased calcaneal inclination, exposed talar head, anterior break in Cyma line, icnreased cuboid abduction angle, increased talocalcaneal angle, increased Meary’s angle, everted calcaneus
Difference in findings between pes planus and vertical talus?
vertical talus has dramatic increases in calcaneal inclination, talar declination and decreased in 1st met declination
Club foot findings on x-ray
45-65 degrees of plantarflexion of talus (nl 25-30), 80 degrees of adduction of talar head and neck to the body in transverse plane (nl 15)
