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Flashcards in Joint Injuries Deck (27):
1

3 injured elements in the "unhappy triad"

1. ACL
2. MCL
3. Medial mesicus

2

*what are the 4 muscles of the rotator cuff

1. supraspinatus
2. infraspinatus
3. teres minor
4. subscapularis

*SItS

3

function of supraspinatus

abducts arm intially (before deltoid; first 15 degrees or so)

4

function of infraspinatus

laterally rotates arm

5

functions of teres minor

adducts and laterally rotates arm

6

functions of subscapularis

medially rotates and adducts the arm

7

MC injured in rotator cuff

supraspinatus

8

pitching injury

infraspinatus

9

spinal segments innervating the rotator cuff muscles

C5-C6

10

*8 bones of the wrist (from bottom medial to lateral, back to medial on top)

1. Scaphoid
2. Lunate
3. Triquetrum
4. Pisiform
5. Hamate
6. Capitate
7. Trapezoid
8. Trapezium

11

MC fractured bone in wrist

Scaphoid --> is prone to avascular necrosis due to a retrograde blood supply

12

dislocation of what wrist bone can cause acute carpal tunnel syndrom

Lunate
(just medial to scaphoid on the lower row of wrist bones)

13

leading cause of knee pain in patients under 45

Patellofemoral syndrome--> anterior knee pain exacerbated by activity

14

2 tx for patellofemoral syndrome

1. strengthen quadriceps muscle
2. low impact exercise and eliminate excessive stress on knee

15

pain in medial arch, worse with forst steps in the AM; what is characteristic pain site

Plantar fascitis--> local point tenderness at the medial tubercle of calcaneus

16

dislocated vs separated shoulder

dislocated--> head of humerus rotates out of glenoid cavity

separated--> clavicle separates from acromion and coracoid process of scapula

17

shoulder pain with abduction ass. with repetitive over the head activities (tennis, pitching)

shoulder impingement syndrome--> compression of supraspinatus or subacromial bursa by the acromion during abduction

18

What structures can be damaged in an anterior shoulder dislocation (6)

1. Axillary nerve
2. Posterior humeral circumflex artery
3. Supraspinatus tendon
4. Anterior glenohumeral ligaments
5. glenoid labrum
6. posterolateral humeral head

19

frozen shoulder due to immobilization ; what two things seen on athrogram

Adhesive capsulitis--> constriction of the joint capsule an loss of axillary and subscapularis spaces

*x-rays are normal

20

3 ligaments commonly injured during ankle sprain, starting with the most common

1. Anterior talofibular ligament ("Always Tears First")
2. Calcaneofibular ligament
3. Posterior talofibular ligament

*these are all lateral ligaments

21

3 common pt populations to get adhesive capsulitis

1. pts over 50
2. women
3. diabetics

22

housemaids knee

prepatellar bursitis

23

elbow swelling, nontender

olecrenon bursitis

24

MC type of hip dislocation

posterior--> femoral head slips out of acebatulum posteriorly

25

common scenario for a posterior hip dislocation

MVA where knee strikes dashboard with knee slightly abducted

26

3 structures that can be injured in posterior hip dislocation

1. medial and lateral circumflex artery
2. femoral vein
3. femoral nerve

27

very common cause of shoulder pain

inflammation of subacromial bursa

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