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USF > Sports OR Day 1 > Flashcards

Sports OR Day 1 Flashcards

1
Q

MPFL origin and insertion

A

femoral insertion origin is between medial epicondyle and adductor tubercle (Schotte point)
superomedial border of the patella

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2
Q

What is the Q angle

A

angular difference between the quadriceps tendon insertion and patella tendon insertion creates a values axis

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3
Q

Angle the patellar tendon creates

A

Lateral angle

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4
Q

Blood supply to patellar tendon

A

Geniculate arteries

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5
Q

MPFL function

A

primary constraint to lateral patellar instability with knee flexion 0 to 20 degrees

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6
Q

Two other restraints to passive lateral subluxation

A

medial patellomeniscal ligament

medial retinaculum

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7
Q

How do you draw the Q angle

A

ine drawn from the anterior superior iliac spine –> middle of patella –> tibial tuberosity
Normal = 13 degrees in male, 18 in female

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8
Q

3 anatomic characteristics that lead to an abnormal Q angle

A
  1. femoral anteversion
  2. genu valgum
  3. external tibial torsion / pronated feet
    anatomical factors
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9
Q

What muscle attaches to the MPFL

A

Vastus medialis

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10
Q

What is TT-TG distance

(Tibial tubercle Trochlear Groove

A
  • measures the distance between 2 perpendicular lines from the posterior cortex to the tibial tubercle and the trochlear groove
  • > 20mm usually considered abnormal
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11
Q

Indication for MPFL repair

A

acute first time dislocation with bony fragment

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12
Q

What do you do if TT-TG distance >20mm

A

Fulkerson-type osteotomy (anterior and medial tibial tubercle transfer)

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13
Q

Static structures in the PLC

A
  • LCL
  • Popliteus tendon
  • Popliteofibular ligament
  • Lateral capsule
  • Variable –> arcuate ligament and fabellofemoral ligament
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14
Q

Dynamic structures of PLC

A
  • Biceps femoris (inserts on the posterior aspect of the fibula posterior to LCL)
  • Lateral head of the gastroc
  • IT tract
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15
Q

1st layer of the lateral knee

A

IT tract, biceps

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16
Q

Where does the common peroneal nerve lie

A

Between layers 1 and 2 of the knee

17
Q

2nd lateral layer of the knee

A

patellar retinaculum, patellofemoral ligament

18
Q

3rd lateral layer of the knee

A

superficial: LCL, fabellofibular ligament
deep: arcuate ligament, coronary ligament, popliteus tendon, popliteofibular ligament, capsule
* lateral geniculate runs b/w the superficial and deep

19
Q

How is the posterolateral drawer test performed

A

performed with the hip flexed 45°, knee flexed 80°, and foot is ER 15°.
Mix of posterior drawer and external rotation

20
Q

Layer 1 of the medial knee

A

Sartorius and deep fascia

21
Q

Layer 2 of the medial knee

A

Superficial MCL and posterior oblique ligament

22
Q

Whats b/w layer 1 and layer 2 of the knee

A

Gracilis and semi T

23
Q

Layer 3 of the medial knee

A

Deep MCL
Capsule
Coronary ligaments

24
Q

Biceps do what in the shoulder

A

shoulder flexion, abduction

25
Q

Bicep long head origin

A

supraglenoid tubercle and superior labrum

26
Q

What stabilizes the bicep tendon in the groove

A

Transverse humeral ligament

27
Q

Biceps subluxation exam

A

palpable click with arm abduction and external rotation as tendon subluxates out of groove

28
Q

Displacement of bicep tendon coincides with what

A

Subsapularis tear

29
Q

Superior GHL anatomy and function

A

Anterosuperior glenoid rim/labrum to proximal lesser tuberosity
Resists inferior translation and ER in shoulder adduction

30
Q

Middle GHL anatomy and function

A

Anterosuperior glenoid rim/labrum (inferior to SGHL) just medial to lesser tuberosity
Resists anteroposterior translation in 45% of abduction

31
Q

What is a Buford complex

A

Thickened MGHL and absent anterior/superior labrum

32
Q

IGHL anatomy and features

A

Anterior (3 o’lock to inferior humeral neck) -resists anterior and inferior translation in abduction and ER
Posterior (9 o’clock to inferior humeral neck) - Resists posterior translation in IR and 90 flexion

33
Q

What is the labrum function

A

Fibrocartilage; depends the glenoid, provides more contact area, adds stability
Also insertion site for GHL ligaments

34
Q

Short head of the biceps origin

A

Coracoid process

35
Q

What runs right under bicep tendon after groove

A

Anterior circumflex humeral artery

36
Q

Borders of triangular space? What goes through

A

Teres major and minor
Long head of triceps
Circumflex scapular artery goes through

37
Q

Borders of quad space? what goes through

A

Theres major, minor, long head of triceps and medial border of humerus

38
Q

3 origins of tricep heads

A
  1. Long - infraglenoid tubercle
  2. Lateral - proximal posterior humerus
  3. Medial - distal posterior humerus
    All insert on olecranon

USF (2 decks)

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