ABFAS Basic Science Exam Questions and Answers All Correct

ABFAS Basic Science Exam Questions and Answers All Correct How many muscles are associated with the 1st MPJ? - Answer-6 all together: 2 Extrinsic (EHL, FHL) 4 intrinsic (EHB, FHB, abductor hallucis, adductor hallucis) What makes up the 1st ray? - Answer-1st metatarsal & medial cuneiform How does the axis of the 1st Ray run? - Answer-Axis runs from anterolateral/slightly plantar to posteromedial/slightly dorsal and is angled about 45 degrees from both the frontal and sagittal planes with little divergence from Transverse. As the 1st ray DF; it inverts and as it PF; it everts What is the axis of the 1st MPJ? - Answer-The 1st MPJ has 2 axis. Vertical (DF/PL) & horizontal (ABD/ADD); there is no longitudinal axis & therefore any frontal plane motion of the great toe is abnormal. What is normal ROM of 1st MPJ? - Answer-During static examination the ROM is only 45 degrees (Hallux DF 21-25 degrees + 20 degrees of metatarsal declination) without movement of the first ray. The total ROM of the 1st MPJ during closed kinetic chain motion is 65-75 degrees What is the normal angle of the following? Hallux Abductus: DASA: PASA: Metatarsus primus adductus (IMA): Hallux Interphalangeus (HI): Metatarsal Protrusion Angle: MA: Tibial Sesamoid Position: - Answer-Hallux Abductus: 15 DASA: 7.5 PASA: 7.5 Metatarsus primus adductus (IMA): 8 Hallux Interphalangeus (HI): 0-10 Metatarsal Protrusion Angle: +/- 2mm MA: 10-20 Tibial Sesamoid Position: 1-3 (tibial sesamoid)