Day 11 - Ms1 Common Adult Ortho Flashcards Preview

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Flashcards in Day 11 - Ms1 Common Adult Ortho Deck (34):
1

Anterior v. Posterior shoulder dislocation

Arm position; ANTERIOR - External rotation, slight abduction (blow to abducted, externally rotated, extended arm - e.g., hitting humerus), PE - prominent acromion (if pt is thin), loss of shoulder roundness, neurovascular compromise (axillary artery/nerve at risk - test for sensation over shoulder before and after reduction); POSTERIOR (less common) - Internal rotation, adduction, unable to externally rotate (blow to anterior shoulder, seizures, electrocutions), PE - Posterior prominence, Anterior shoulder is flat, Unusual to have neurovascular compromise

2

Tx acute anterior shoulder dislocation

Pain control (consider narcotics); May give lidocaine into glenoid cavity; Conscious sedation may make it easier to reduce shoulder back into place; Variable reduction techniques (e.g., Stimson technique - pt prone, 10-15 lbs traction on pt wrist splint & allowed to hang over bed for 30 min, pressure applied medially over scapula tip; Traction-Countertraction technique - wrap bedsheet around pts axilla, apply outward pulling force to disloated arm while other person pulls sheet in opposite direction); Sling; Ortho f/u within 1 wk; If repeated dislocations, may be candidate for surgical repair

3

Nerve injury: Claw hand

Ulnar nerve injury

4

Nerve injury: Ape hand

Median nerve injury

5

Nerve injury: Wrist drop

Radial nerve injury

6

Nerve injury: Scapular winging

Long thoracic nerve injury

7

Nerve injury: unable to wipe bottom

(deficit w/ adduction, internal rotation, & extension) Thoracodoral nerve injury (latissimus dorsi)

8

Nerve injury: loss of forearm pronation

Median nerve injury

9

Nerve injury: inability to ab/adduct fingers

Ulnar nerve injury (interosseous muscles)

10

Nerve injury: loss of arm abduction

Axillary nerve injury

11

Nerve injury: weak lateral rotation of arm

Suprascapular or Axillary nerve injury

12

Nerve injury: loss of arm & forearm flexion

Musculocutaneous nerve injury

13

Nerve injury: loss of forearm extension

Radial nerve injury

14

Nerve injury: trouble initiating arm abduction

Suprascapular nerve injury (supraspinatus muscle - initiates arm abduction, first 10 degrees)

15

Nerve injury: unable to abduct arm beyond 10 degrees

Axillary nerve injury (deltoid)

16

Nerve injury: unable to raise arm horizontally?

Long thoracic nerve injury (serratus anterior - also involved w/ winged scapula); Spinal accessory (trapezius needed to go above horizontal)

17

Nerve most at risk: Fracture to shaft of humerus

Radial nerve

18

Nerve most at risk: Injury to surgical neck of humerus

Axillary nerve

19

Nerve most at risk: Injury to supracondyle of humerus

Median nerve

20

Nerve most at risk: Injury to medial epicondyle of humerus

Ulnar nerve

21

Nerve most at risk: Anterior shoulder dislocation

Axillary nerve

22

Nerve most at risk: Injury to carpal tunnel

Median nerve

23

Pt comes to ER complaining of wrist pain after fall - findings suggesting scaphoid fracture?

Anytime tenderness in anatomical "snuffbox", traumatic wrist pain

24

Tx scaphoid fracture

Short arm thumb spica cast (middle fracture longer, proximal fracture least vascularization = highest risk AVN); If displaced, open reduction also

25

Mgt femur fracture

Maintain hemodynamic stability (IV fluids, packed RBCs); In past, if CLOSED femur shaft fracture, closed reduction & traction... Now, open reduction & internal fixation to limit bleeding; If OPEN fracture, copious irrigation w/ at least 3 L of normal saline, cover wound w/ sterile dressing, apply gentle pressure to control bleeding, ppx antibx for gram + coverage, OR w/i 6 hrs for debridement, pulsative lavage, irrigation, & delayed primary closure after open reduction & internal fixation; Pain control w/ narcotics; Definitive care ASAP/OR ready; Tetanus ppx

26

Types of fractures prompt search for ruptured thoracic aorta

(High velocity); 1st and 2nd rib fractures, scapular fractures, sternal fractures

27

General requirements for tx open fracture in ER

(1) Address hemorrhage w/ wound pressure (2) X-ray (3) Antibx (cephalosporins, if extensive soft tissue damage &/or high contamination, add aminoglycoside; if farm? injury, add penicillin) (4) Apply saline soaked sterile dressing to wound (5) Provisional fracture reduction & splint application (6) Operative intervention w/i 8 hrs; If surgical delay anticipated, remove obvious foreign bodies & irrigate gently; Avoid probing and pressure irrigation, which may force debris deeper into wound; Do not remove any bone fragments; Tetanus ppx

28

Tx ankle sprain

In first 24 hrs, RICE = Rest, Ice, Compression of swelling, Elevation; NSAIDs; ROM exercises; Rehab starts in first 24-48 hrs, Continue crutches or cane until able to walk with normal gate; Lace up ankle support with metal bars inside (superior to semi-rigid support which is superior to ACE wrap alone); Immobilization (rigid boot), NOT if grade 1-2 sprain then delay return to work/sports; Only if grade 3 sprain = complete tear & joint instability, loss of fxn or motion, unable to bear wt; Warn pts of increased risk of DVT (swelling/color changes/pain or tenderness in calf - return to ER)

29

Knee injury: Most commonly injured ligament

Medial collateral ligament (MCL)

30

Knee injury: Positive Lachman test

Type of anterior drawer test (leg at 20 degrees instead of 45 degrees) = ACL tear

31

Knee injury: Positive McMurry's test aids in dx

(applying pressure to meniscus causes pain); Meniscus tear

32

Knee injury: Common dashboard injury in MVA

PCL tear

33

Characteristics feat of compartment syndrome

Earliest sign is pain in excess of what's expected, occurring even w/ passive motion; 6P's (apin, pallor, poikilothermia, pulselessness, paresthesia, paralysis); Measure cmpartment pressures >= 30 mmHg;

34

Most common compartments &/or fractures leading to compartment syndrome

Most common compartments: Volar compartment of forearm & Anterior compartment of lower leg; Most commonly due to fractures, like supracondylar fractures both bone forearm or proximal tibial fractures

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