TKR

Question 1

What are the major criteria for infected PJI

Answer 1

1) Two positive results of cultures growing the same organism using standard culture method

2) Sinus tract with evidence of communication to the joint or visualization of the prosthesis

Question 2

What are the minor criteria for infected PJI in acute

lass <3 weeks

Answer 2

crp >100 mg/L -2
wbc>10000 / lucocyte esteras ++/alpha defensin >1 -3
synovial PMN >90 -2
singel positev cultuer -2
positev histology at surgery ( >5 nutrophis in 5 feelds in 400 magnification ) -3
positev intraoperativ puralance -3 ( canto be used if metal debris present )

Question 3

What are the minor criteria for infected PJI in chronic

more>3 weeks with symptoms

Answer 3

crp >10 mg/L or D-dimer >860 -2
ESR > 30 -2
wbc>3000 / lucocyte esteras ++/alpha defensin >1 -3
synovial PMN >70 -2
singel positev cultuer -2
positev histology ( >5 nutrophis in 5 feelds in 400 magnification ) -3
positev intraoperativ puralance -3 ( canto be used if metal debris present )

6> INFECTED ,3> NOT INFECTED

Question 4

What is the order of release in varus Knee

Answer 4

1) Deep MCL Release
2)Release Posteromedial Corner
3)Consider PCL Release/Substitution If Imbalance Persists At This Point
4) Release Semimembranosis (Especially If There Is An Associated Flexion Contracture)
5) Complete Superficial MCL Release / Pes Anserinus ( posterior oblique portion is tight in extension (release if tight in extension)
anterior portion is tight in flexion (release if tight in flexion)

Question 5

What is the order of release in Valgus Knee

Answer 5

1)posterolateral capsule
2) iliotibial band if tight in extension
3 ) popliteus if tight in flexion (release if tight in flexion)
4) LCL

Question 6

Wiche classification used in OA of knee

Answer 6

Kellgren
1) Possible osteophytic lipping + doubtful JSN
2) Definite osteophytes + possible JSN
3) Moderate osteophytes + definite JSN + some sclerosis + possible bone end deformity
4) Large osteophytes + marked JSN + severe sclerosis + definite bone end deformity

Question 7

What increases the Q angle

Answer 7

internal roration or medialazation of femural or tibial componnent
placing the patella lateral

Question 8

What is the order of release in flexion contracture deformity

Answer 8

1) posterior femoral & posterior tibial osteophytes
2) posterior capsule
3) additional resection of distal femur
4) gastrocnemius muscles (medial and lateral)