Knee

Question 1

bakers cyst

Answer 1

Fluid build in semimem bursa.

Question 2

Knee injuries

Answer 2

Miscal inj or cyst or discoid meniscus- medial bucket handle
ACL and PCL
Prox tib fib disloc
Tendinitis or rupt
Prepatellar bursitis- housemaid knee
Infrapateller bursitis- clergymans knee
Semimem bursa- bakers
Patella disloc- us lat
Osteonec
Osteochondritis dessicans- pathol of artic cartil and subchondral bone (soften and sep, loose bodies)
Osgood schlater teen boys- osteochondrosis of tibial tubercle due to stress from ext. 
patellofemoral pain synd- yng athletes

Question 3

knee disloc

Answer 3

-assocs-
Often lig tear
Poplit tear inj
Comm fibular N inj
Tibia and femur fracs
-ant 30-50%- hyperext, us tears PCL, intimal A tear
post 25%- axial load to flexed knee eg car, high risk poplit A tear
Lat high risk fibular N inj
Medial and rotational rare
-dimple sign medial femoral condyle. Often spont reduce fast.
-check NV func. XR. MRI.
-mx- reduce and re exam NV, splint in 30 deg flex.
May req surgic reduc and ext fix
Lig reconstruc and repair
-complics- stiff, lax/instabil, comm fib N inj, vasc comprom.

Question 4

Patellar frac

Answer 4

Direct impact or eccentric contrac
Largest BS at infer pole
Classif- non displ, transv, pole, vertic, marginal, osteochondral, comminuted.
Cant SLR
Ix- XR, MRI
Mx- immob in ext eg brace or cyclinder cast with full weight bear. ORIF with tension band. Partial or total patellectomy.
Complics- weakn, ant pain, loss or reduc, non union, osteonec, infec, stiffn.

Question 5

OA

Answer 5

Prim- degen artic cartil and surfs no provoking fac
Sec- trauma, op, infec, malposit, mech instabil, osteochondritis dessicans.[
Mx- NSAID, quad strengthen, wl, steroid injec, TKR (15yr).