Knee

Question 1

3 components of posteromedial corner?

Answer 1

1) Semimembranosus
2) Posterior oblique lig
3) Oblique popliteal lig

Question 2

7 components of posterolateral corner?

Answer 2

1) Fabellofibular lig
2) LCL
3) Arcuate lig
4) Popliteofibular lig
5) Biceps
6) IT band
7) Popliteus

Question 3

Femoral insertion of popliteus compared to LCL?

Answer 3

Inferior, anterior, deep

Question 4

Primary stabilizer of external rotation of tibia?

Answer 4

PLC

Question 5

Layer 1 of medial knee?

Answer 5

Sartorius and fascia

Question 6

Layer 2 of medial knee?

Answer 6

Superficial LCL, posterior oblique lig, semimembranosus, MPFL

Question 7

Layer 3 of medial knee?

Answer 7

Deep MCL, capsule

Question 8

What lies between layers 1 and 2 of medial knee?

Answer 8

Gracilis, semitendinosis, saphenous nerve

Question 9

Order of structures of proximal fibula from anterior to posterior?

Answer 9

LCL, posterofibular lig, biceps

Question 10

Native ACL tensile strength?

Answer 10

2200N adults, 2500N young adults

Question 11

BPTB graft tensile strength?

Answer 11

2900N, 30% stronger when rotated 90 degrees

Question 12

Which is stronger, BTPB or quadrupled hamstring graft?

Answer 12

Quadrupled hamstring

Question 13

PCL tensile strength?

Answer 13

2500-3000N

Question 14

MCL tensile strength?

Answer 14

5000N

Question 15

LCL tensile strength?

Answer 15

750N

Question 16

Most common causes of acute hemarthrosis?

Answer 16

ACL (70%), patella dislocation, osteochondral fracture, peripheral meniscus tear

Question 17

Most sensitive view for revealing early OA?

Answer 17

Weight bearing 45 degree PA view