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Which of the following structures attaches between the medial epicondyle and adductor tubercle of the femur?
Medial head of gastrocnemius
Medial collateral ligament
Medial patellofemoral ligament
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Which of the following best describes the radiographic landmarks on a lateral radiograph for locating the femoral attachment of the medial patellofemoral ligament (MPFL) during reconstruction?
The intersection of a line extended from the middle of the shaft and Blumensaat's line
Anterior to a line extended from the middle of the shaft and Blumensaat's line
Posterior to a line extended from the posterior cortex of the shaft and distal to Blumensaat's line
Anterior to a line extended from the posterior cortex of the shaft and distal to Blumensaat's line
Anterior to a line extended from the posterior cortex of the shaft and proximal to Blumensaat's line
A 27-year-old football player sustains an acute lateral patellar dislocation. Which of the following is the most likely site of injury seen on MRI?
Midsubstance oblique retinacular ligament rupture
Soft-tissue avulsion of medial patellofemoral ligament
Midsubstance medial patellofemoral ligament rupture
Partial quadriceps tendon rupture
Bony avulsion of medial patellofemoral ligament
A high school softball player has chronic activity-related anterior knee pain without a history of instability. Which radiographic measurement is used to indicate when a lateral retinacular release may be helpful?
Lateral patello-femoral angle
Patellar height index
An athlete sustains a traumatic patellar dislocation. The MRI shows a hemarthrosis with a floating osteochondral fragment. Which of the following is the most likely site of origin for the loose fragment?
The lateral patellar facet
The medial patellar facet
The odd patellar facet
The medial trochlea
The central trochlea
You see a patient in the emergency room with an acute lateral patellar dislocation. Which of the following factors is associated with the highest risk of persistent patellar instability?
Previous patellar instability event
Amount of lateral patellar tilt
All of the following are predisposing factors for lateral patellar dislocation in a native knee EXCEPT?
Excess femoral internal rotation
Excess external tibial rotation
Lateral femoral condylar hypoplasia
Insufficiency of the vastus lateralis
Evolving Technique Update: The Dislocated Knee: My Algorithm for SuccessGregory...
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Technique Corner Speaker: Adam Yanke, MD Duration: 9 mins 14 secs
HPI - Patient underwent a RIGHT tibial tubercle transfer, VMO quadricepsplasty, and lateral release when she was 16 for recurrent dislocation. It was done out of state. She has had multiple episodes of LEFT patella subluxation over the years. She dislocated her LEFT patella for the first time one week ago when she slipped in her bathroom. She has donet PT and taping of the LEFT and RIGHT in her teenage years, but has not done any recent PT. She is pushing for surgery to prevent any further instability as she has been through this on the RIGHT side before. States "I know this won't get better with PT. I've already been through it on the right side."
Imaging notable for LEFT sided MPFL tear, large lateral meniscus tear, TT-TG 9mm, Q-angle 13 degrees. Trochlear dysplasia evident on MRI below.
How would you treat this patient?
HPI - 22 y/o male s/p traumatic patellofemoral dislocation 9 months ago. Failed conservative tx/6 months of PT. Patellofemoral dislocation now occurs ~2x/month.
What would you do for this patient to correct patellofemoral instability?
HPI - 21 year old female with history of recurrent dislocation patella was operated 2yrs back .lateral release ,proximal and distal alignment were performed .intraoperatively there was no dislocation. patient was asymptomatic for one year when after fall she again developed symptoms of recurrent dislocation of patella dwhich takes place in flexion beyond 100 degree
what should be the further treatment plan