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What type of tissue is formed by the activation of marrow mesenchymal cells following subchondral drilling of an 8x7 mm osteochondral defect?
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A 24-year-old female has moderate arthrosis of the medial facet of the patella and the medial femoral condyle. Which of the following procedures is contraindicated?
Anterior (Maquet) tibial tubercle osteotomy
Anteromedial (Fulkerson) tibial tubercle osteotomy
Anterolateral tibial tubercle osteotomy
Medial opening wedge high tibial osteotomy
Lateral closing wedge high tibial osteotomy
Following a medial femoral condyle osteochondral autograft mosaicplasty, which of the following statements best describes the fixation of the graft?
Graft fixation strength increases linearly with time until subchondral union at 3 months
Graft fixation strength initially decreases during the early healing phase, and then increases with subchondral bone healing
Graft fixation strength does not change during the first 3 months following surgery
Graft fixation strength is enhanced by early weight bearing
Graft fixation strength initially increases over the first 6 weeks, then recedes with bony remodeling
A 32-year-old female is referred to you for definitive treatment of a symptomatic focal chondral defect on her medial femoral condyle. A photograph from a recent diagnostic arthroscopy shows the defect (Figure A), which measured 25 x 25mm after debridement. What surgical treatment would you recommend?
Osteochondral autograft with 1-2 plugs
A patient with a symptomatic chondral defect undergoes the arthroscopic procedure seen in Figure A. The reparative tissue would best be described as which of the following?
All of the following are acceptable scenarios for the use of autologous chondrocyte implantation (ACI) in the patellofemoral joint EXCEPT:
Grade 4 lesion of the medial femoral condyle
Grade 4 lesion of the trochlea
Joint space narrowing on Merchant view
Varus mechanical axis on standing full length radiograph
Concomitant anteromedial tibial tubercle transfer osteotomy (Fulkerson's)
Session XII: Knee I Speaker: Brian Cole, MD, MBA Duration: 13 mins 30 secs
Session V: Osteochondritis Dissecans Moderator: Andreas Gomoll, MD Duration: 1...
Session V: Osteochondritis Dissecans Moderator: Brian J. Cole, MD, MBA Duratio...
HPI - 17yo F bilateral knee AVN. Pain and swelling limiting activities. MRIs of both knees show AVN of the weightbearing portion of both medial and lateral condyles.
HPI - Former elite marathon runner has been unable to exercise for a year. She was diagnosed with a medial cartilage defect and underwent a microfracture at local hospital. She had no improvement after 6 months. MRI shows 20x20 MFC defect with scant fill and intact subchondral bone.
How would you treat this patient with a symptomatic full thickness MFC chondral defect and previous failed microfracture?
HPI - Highly competitive high school football player presents with knee pain after suffering patellar dislocation during football game one week prior to presenting in the clinic.
How would you treat this patient?