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55 Cards in this Set
- Front
- Back
nerve supply to ant capsule and GH joint?
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Axillary, Suprascapular with Musculocutaneous to the anteriosuperior portion
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nerve supply to posterior capsule and GH joint?
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Axillary and suprascapular
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Anterior blood supply to the shoulder?
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Anterior Humeral Circumflex A to subscap, anastomoses w Post Humeral Circumflex A @ biceps tendon
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Post Blood supply to shoulder?
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suprascapular a and post humeral circumflex
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Labral blood supply to shoulder?
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suprascapular, post humeral circumflex, circumflex scapular a.
(note ant sup labrum has poor blood supply and inferior labrum has robust blood supply) |
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GH Congruency?
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GH becomes more congruent at higher levels of abduction so contact area increases
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IGHL action?
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tighten w Abd/ER
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SGHL action?
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tighten w Add/ER
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MGHL action?
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tighten w Add/ER
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Ratio GH to Scapulothoracic motion in abduction?
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generally 2:1 BUT:
first 30 degrees all GH last 60 from 120-180 ratio 1:1 |
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Nreve complication from Anterior Portal shoulder scope?
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MusculoCutaneous Nerve - running 2cm inf and 1cm medial to coracoid
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Nerve complicatio from Posterior Inferior Portal shoulder scope?
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Axillary nerve - 5 cm below acromion
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**With increasing abduction in teh scapular plane, maintaining neitral rotation, contact area, and contact pressure per unti area between the humeral head and glenoid follows what pattern if the total load across the joint is held constant?
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Contact area increases and contact pressure decreases.
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What ligaments are primary static restraints to inferior translation of the arm when the shoulder is in 0 degrees abduction and neutral rotation?
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Superior GlenoHumeral and coracohumeral
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Best description of most common anatomic variation in glenoid labrum and MGHL in anterosuperior quadrant of shoulder?
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Labrum attached to glenoid rim and a flat/broad MGHL
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Atraumatic neuropathy of the suprascapular nerve usually occurs at what anatomic location?
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Suprascapular and spinoglenoid notches.
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Xray view to detect Bony Bankart?
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West Point Axillary
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Xray view to detect Hill-Sachs?
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Stryker notch
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GLAD lesion?
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Glenoid Labrum Articular Defect
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shoulder brace for non-throwing athletes?
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Duke brace
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Shoulder brace for throwing athletes?
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Sully brace
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Evidence conclusions for shoulder stabilization procedures in high energy sports
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evidence supports operative fixation.
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Bankart lesion and displacement in IR vs ER?
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IR is displaced
ER is reduced |
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Is need for immediate surgery for shoulder instability supported by the literature?
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Not at this time.
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best position to immobilize arm after shoulder dislocation?
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Adduction and External Rotation
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17yo linbacker primary ant shoulder dislocation requiring reduction but has no bone or rotator cuff issues - treatment algorithm?
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ROM, functional brace, return to play when pain free.
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50 yo w primary ant shoulder dis, was reduced then immobilized a few weeks. 3mos postop c/o pain w activity and at night + weakness w overhead activity. Most likely cause?
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Axillary nerve palsy (p188)
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Acute HAGL Rx?
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Open repair of lateral joint capsule disruption. (p188)
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When become concerned about Hill Sachs and need for grafting?
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25-35%
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Hill-Sachs Humeral defect surgical options?
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Capsular shift
Glenoid recon-ICBG?Latarjet Oseoarticular allograft Arthroplasty RC "Rimplissage" (arthro place infraspin tendon into defect w suture anchors) |
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Reverse Hill-Sachs defect/instab surgical options?
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LT Transfer (McGlaughlin)
Osteoarticular allograft Arthroplasty Arthrosurface HemiCAP |
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Chronic locked A/P dislocations - when closed red?
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up to 4-6 weeks post injury, but then need to do open.
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Chronic lockd A/P dislocation surg Rx?
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Open red + transfer LT with subscap in young with defects 20-45% of humeral head
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Chronic locked A/P dislocation - when hemi?
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Only when defect >50-60%
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what anatomic item associated with higher rate recurrence after arthro stab?
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"Inverted Pear" glenoid deficiency
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ALPSA lesion?
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Anterior Labral Periosteal Sleeve Avulsion: avulsion of the anterior inferior labrum which heals medially on the scapular periosteum.
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Indications for fixation GT fx?
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>1cm? (look up)
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primary restraint to posterior translation?
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Subscapularis
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Post subluxation physical finding?
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reproducible click and pain with posterior stress or loading
+Kim sign.(Jerk test p 193) |
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usual path for post instability?
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"reverse Bankart"
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Post glenoid bone loss surgical options?
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glenoid osteotomy
ICBG acromial bone block |
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Scapular dyskinesia types?
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inf/med
medial sup/med |
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Internal Shoulder Impingement?
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contact between articular side of the rotator cuff and the posterio-superior glenoid
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PE findings for internal impingement?
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dec IR
inc ER + relocation test + O'Brien test (SLAP) |
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Trhowing injuries?
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ant laxity w hyperangulation
PostSup SLAP tears w undersurface cuff injury |
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GIRD?
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Glenohumeral Internal Rotation Deficit
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Post/Inf capsule contracture -->
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loss of IR
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Why PIGHL contracture in throwers?
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repetitive overuse
muscular fatigue of RC & Scapular stabilizers deceleration overloads muscles, caplule responds by hypertrophy |
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Result of "peel-back" mechanism in throwers?
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type II SLAP
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Rx symptomatic posterior capsular contractures?
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90% respond to capsular stretching
10% need surgical release |
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Structures at greatest risk for pitcher with pain in early acceleration phase?
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Posteriosuperior labrum
GT articular side of RC |
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"tumor of Luschka"
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Anterior Superior scapular osteophyte
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EMG of supraspinatus shows significant EMG activity. What would biceps show, w and w.o RCT?
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minimal activity
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MDI indications for surger?
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failed nonoperative treatment
prolonged symptoms unresponsive to PT *need to assess motivation *ability to participate in po rehab |
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benefit glenoid vs humeral based MDI capsulorrhaphies?
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equal, dealer's choice
however, one study showed humeral-based best for excessive capsular redundancy |