orthotic board practice questions & Answers(RATED A+)

how do you determine stirrup length? - ANSWER(height of medial malleolus)x2 + width of heel +6mm how do you determine band length? - ANSWER1/2 circumference + 38mm minimum clearance for ankle joints - ANSWER6 mm medial, 5 mm lateral minimum clearance for knee joints - ANSWER6 mm medial, 3 mm lateral add 3mm if using drop locks KAFO: what changes could you make to reduce recurvatum? - ANSWERmake bands more shallow; move calf band up and distal calf band down; increase heel height what changes could you encounter moving the bands of a KAFO to reduce recurvatum? - ANSWERperoneal nerve impingement, limited knee flexion in orthosis what type of ankle joint would you use to encourage plantarflexion? - ANSWERyou do not need to encourage PF as gravity will do this how much PF do you allow for a pt with CVA? - ANSWERneutral how do you determine free vs locked knee on a KAFO? - ANSWERhip and/or knee extensor weakness what would you recommend for a pt with foot slap at heel strike? - ANSWERAFO (conventional or plastic) with DF assist and/or PF stop what is LCP? - ANSWERlegg calve perthes avascular necrosis of femoral head, usually in boys 9-14 tx: abducton and internal rotation of hip to get femoral head in acetabulum name 3 orthoses used for LCP - ANSWERatlanta (scottish rite), toronto, newington name 3 orthoses used for DDH (hip dyslplasia) - ANSWERfrejka pillow, pavlik harness, ilfield splint what is tibial torsion? - ANSWERdifference between knee joint and ankle joint axes viewed in the transverse plane