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9 Cards in this Set
- Front
- Back
Which of the following is true of the scapula during an overhead throwing motion? 1-It maximally retracts on ball release; 2-It protracts during late cocking to prevent imping on the RC; 3-It must rotate in the cocking & accel phases to prevent imping on the RC; 4-It must remain fixed during the throwing motion to impart maximal energy;5-It is has no effect on concavity-compression
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The scapula has an integral role in the overhead throwing motion. It must rotate during cocking & acceleration to clear the acromion to prevent impingement on the RC. 5 important roles of the scapula during throwing: 1. provide a stable glenohumeral articulation; 2. retraction and protraction; 3. elevation of the acromion; 4. serve as a base for muscular attachment; 5. to be a link in the kinetic chain.Ans3
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Which of the following structures attaches between the medial epicondyle and adductor tubercle of the femur? 1-Med head of gastrocnemius; 2-MCL; 3- Semimembranosis; 4- Add magnus; 5-Med patellofemoral lig
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The fem attachment of the (MPFL) is located b/t the fem med epicondyle and the add tubercle. During lat patellar dislocation, the fem attachment of the MPFL is a common site of injury & avulsion. Traumatic inj or laxity to the MPFL can cause future patellar instability, as the MPFL is the 1^ restraint to lat patellar translation in the 1^ 20 deg of knee flex.Ans5
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Which of the following best describes the xray landmarks on a lat xray for locating the fem attachment of the (MPFL) during recon? 1-The intersection of a line extend from the middle of the shaft and Blumensaat's line; 2-Ant to a line extended from the middle of the shaft and Blumensaat's line
3-Pos to a line extended from the pos cortex of the shaft and dis to Blumensaat's line; 4-Ant to a line extend from the pos cortex of the shaft & dist to Blumensaat's line; 5-Ant to a line extended from the pos cortex of the shaft & prox to Blumensaat's line |
Schottle et al have described the radiographic landmark to be 1 mm anterior to the posterior cortex extension line, 2.5 mm distal to the posterior origin of the medial femoral condyle, and proximal to the level of the posterior point of the Blumensaat line.Ans5
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27yo fball player sustains an acute lat patellar dislctn. Which is the most likely site of injury seen on MRI? 1-Soft-tissu patellar-sided avulsion of MPF lig; 2-Soft-tissu fem-sided avulsion of MPF lig; 3-Midsub MPF lig ruptr; 4-Bony fem avulsion of MPF lig; 5-Bony patellar avulsion ofMPF lig
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soft-tissue avulsion inj of the lig off the femur. Both midsubtance and patellar-sided soft tissue avulsions areMC than bony avulsions. Bony avulsion off the patella can occur as well.Ans2
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high school softball player has chronic activity-related ant knee pain w/out a hx of instability. Which xray measurement is used to indicate when a lat retinacular release may be helpful? 1-Congruence angle; 2-Q angle; 3-Sulcus angle; 4-Lat patello-femoral angle; 5-Patellar height index
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lateral patello-femoral angle is the angle = lat patellar facet & a line drawn across most prominent aspects of ant portion of the trochlea on a CT scan or Sunrise view xray. If there is a (-) patellar tilt on this measurement, the patient may benefit from a lateral release for pain relief. Lateral release is not used for instability.Ans4
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athlete sustains a traumatic patellar dislcation. MRI (+) hemarthrosis w/a floating osteochondral fragment. Which is the most likely site of origin for the loose fragment? 1-The lat patellar facet; 2-The med patellar facet; 3-The odd patellar facet; 4-The medial trochlea
5-The central trochlea |
Lateral patellar dislocations are by far the most common. The medial facet of the patella will impact on the lateral trochlear ridge. Either of these would be acceptable answers, but lateral trochlea is not listed.Ans2
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pt in the ER w/ an acute lateral patellar dislctn. Which factors is assocd w/ the highest risk of persistent patellar instability? 1-Younger age; 2-Inc Q-angle
3-Male gender; 4-Previous patellar instability event; 5- Amount of lat patellar tilt |
F (not M) have > incidence of patellofemoral instability 2^ to their >d Q-ang=(quad ang) ang formed by the intersection of a line @ ASIS to the patella & from the patella to the tibial tubercle, Nl Q-ang M=14 deg/F= 18 > angle means that there is a >lateral vector force on the patella, predisposes to lateral patellar instability. > Q-angle incr the chance for dislocation, BUT a previous hx of dislocation is the strongest predictor, prior hx = 7 x > odds of more instability.Ans4
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wtlifter feels a pop in his ant shoulder while doing a bench press exer. Which nerve innervates the muscle that is disrupted as seen on his MRI (Fig A)? 1-Axillary
2-Musculocutaneous; 3-Upper & lower subscapularis 4-Median; 5-Lat & Medpectoral nerves |
biceps or pectoralis major tendon tear. The MRI shows a normal biceps tendon and a retacted pectoralis muscle. The innervation of the pectoralis major is the lateral and medial pectoral nerves.Ans5
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Which of the following rehab exercises provides for restoration of ROM while limiting stress on the repair of a ruptured patellar tend? 1-Active open chain flex, active closed chain ext;2. Passive flex, active closed chain ext; 3-Active open chain flex, pass ext; 4-Active closed chain flex, passive ext; 5-Active open chain flex, active open chain ext
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o avoid stress on the repair, no form of active extension should be used for at least 4-6 weeks. Closed versus open chain refers to strengthening exercises, not just range of motion. Closed kinetic chain exercise occurs when the terminal or distal segment of an appendage is fixed (squat, leg press, pull-up).Ans4
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