PCM OSCE Knee

Question 1

normal Q angle

Answer 1

15
ASIS to patella
tibial tuberosity to patella

Question 2

genu valgum

Answer 2

increased Q angle

Question 3

genus varus

Answer 3

decreased Q angle

Question 4

knee motions

Answer 4

flexion/extension

internal/external rotation

Question 5

knee flexion angle/muscles

Answer 5

145-150
long and short head of biceps femoris
semimembranosus
semitendinosis
gracilis
gastrocnemius
plantaris
sartorius
popliteus

Question 6

knee extension angle/muscles

Answer 6

0
rectus femoris
vastus lateralis
vastus medialis
vastus intermedius

Question 7

internal and external rotation of tibia on femur angle

Answer 7

10

Question 8

knee valgus test

Answer 8

positive: increased laxity, soft or absent endpoint, pain
indication: MCL pathology

Question 9

knee varus test

Answer 9

positive: increased laxity, soft or absent endpoint, pain
indication: LCL pathology

Question 10

knee anterior drawer test

Answer 10

positive: excessive translation
indication: ACL pathology

Question 11

Lachman’s test

Answer 11

positive: increased laxity, soft or absent endpoint
indication: ACL pathology

Question 12

posterior drawer test

Answer 12

positive: excessive translation
indication: PCL insufficiency, posterior capsular injury or disruption

Question 13

McMurray’s test (lateral)

Answer 13

positive: pain with internal rotation and varus stress
indication: lateral meniscus pathology

Question 14

McMurray’s test (medial)

Answer 14

positive: pain with external rotation and valgus stress
indication: medial meniscus pathology

Question 15

Apley’s grind test (compression)

Answer 15

positive: pain with rotation and/or compression
indication: both or either meniscal or collateral L. pathology

Question 16

Apley’s grind test (distraction)

Answer 16

positive:
pain (suggests collateral ligament pathology worsened by increased strain)
relief (suggests meniscus pathology relieved with reduced meniscal pressure)

Question 17

patella-femoral grinding test

Answer 17

positive: crepitus or pain
indication: roughness of articulating surfaces (i.e. chondromalacia)