Final - Protective Sports Equipment, Forearm, Hand, Wrist, Fingers Flashcards

(79 cards)

1
Q

sport participants must be protected from

A

high velocity low mass forces - focal injuries like a bullet or a puck
low velocity high mass forces - checked into boards and absorbing forces - diffuse injuries

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2
Q

how to prevent injuries

A

prophylactic/preventative braces

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3
Q

8 things that can lead to sport related injuries

A
illegal play 
poor technique 
inadequate conditioning 
poorly matched player levels 
prev injury that is now vulnerable 
low tolerance of player to injury 
inability to protect area due to restricted ROM in exchange for high stability 
poor quality, maintenance or cleanliness or protective equipment
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4
Q

materials in diff sports - mountain bike vs football helmets

A

mountain bikes - one hit

football helmets - durable

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5
Q

football vs hockey helmets

A

thick padding and hard shell that are designed to strenthen trap neck and core to hit - deflects a lot of force vs overlapped plastic hard shell that deflects some but absorb a lot of forces - pucks

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6
Q

low density material

A

light and comfortable
effective at low levels of impact
gauze padding, foam, neoprene

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7
Q

high density materials

A

less comforable

less cusioning but absorb more energy by deformation - orthoplast/thermoplast casting materials

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8
Q

resilience of materials

A

high regain their shape and used over areas with repeated impact
nonresilient is best - but one time/occasional materials

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9
Q

soft materials - 3

A

light - air
open cell - connected and deform quickly and not good for shock absorbing
closed cell - no passage in between, material rebound and return to prev shape, less cushioning at low impact

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10
Q

hard materials - 3

A

plastic and rubber
plastic conforms better than rubber
heat molded
splints

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11
Q

design factors - 7

A

increase impact area
transfer/disperse impact to another body part
limit relative motion of body part
add mass to limit deformation and displacement
reduce friction between surfaces
absorb energy
resist absorption of bacteria, fungus and viruses

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12
Q

protective equipment for head and face - 3

A

single/double air bladder and closed cell
plastic shell
principle of protection - deflection and absorption of force

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13
Q

5 steps to fitting a football helmet

A
manufacturers guideline 
haircut for the season 
wet hair for sweaty game hair 
checked daily 
move side to side and up and down - should not move in opposite direction of head
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14
Q

Hockey helmets

A

prevent eye injuries
replace every 7 years and never buy a use one - weakened plastic or deteriorating lining
CSA mark
snug and taut chin cup
wear it before game
dont tamper with it
solid wire structure
scratches/cracks (structural strength) on plastic visor
discard cracked helmet - design to take more than one hit so hit means its bad

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15
Q

spectacles

A

lens, frame and side shields
3mm thick and CR39 plastic or polycarbonate
racquet ball at 40m/s or racquet at 22.2m/s

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16
Q

hard contact lens

A

corneal

dislodged and corneal abrasions

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17
Q

soft contact lens

A

scleral - entire front
pool water causes it to adhere to cornea but not recommended due to microorganisms in pool water to wear goggles with them

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18
Q

ear wear

A

boxing, wrestling, water polo

prevent repeated friction and trauma

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19
Q

mouth guard

A

does not prevent concussions
boil and bite as good as custom ones
shock absorber when get hit upward into lower jaw
protect teeth, mouth, lips, cheeks, gums, tongue and jaw
should cover all teeth
6-14 every 3 m
>16 annually
adults 2yr - lose their resiliency and flexibility over time

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20
Q

stock mouth guard

A

inexpensive but not good fit and comfort for speaking and breathing - least protection

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21
Q

mouth formed

A

boil and bite - relatively cheap - molded after boiling - limited sizes with little attempt at proper fit

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22
Q

custom formed

A

dentist with a vacuum machine - change over time and become lose, thinning and perforating - no way to insure proper thickness

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23
Q

pressure laminated custom made

A

model from several layers of material in special heat lamination machine - maintains fit and protective thickness over time - taekwondo helmets - protect your head from hitting the ground

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24
Q

shoulder protection

A

protect soft and bony tissue structures in the shoulder, upper back and chest, absorb and deflect force - made to hit in football, protect in hockey

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25
football shoulder pads
cantilever - hard plastic bridge for AC | flat - light weight for QB and receivers who raise their hands over their head
26
valgus knee
patella wants to move - tape or patellar brace
27
functional knee braces
ACL | min ant tranlation of tib and varus and valgus force
28
factors affecting FKB
hinge design/placement materials - stiff soft tissue interface
29
ankle braces
prevent or support ankle proprioceptively stronger but chaffing, blistering and fit - 50/50 lace up - limit all ankle motions semi rigid orthosis - limit inversion and eversion air bladder - give PF and DF, limit inversion and eversion
30
ankle taping vs bracing
taping lose effectiveness after 20 mins, subjectively more effective, proprioceptive effect brace costs less, generally supportive throughout but does not conform well to body
31
what are the 8 bones of the metacarpals
scaphoid, lunate, triquetral, pisiforms, trapezium, trapezoid, capitate, hamate
32
flexibility and motion of the wrist and hand due to
articulations of wrist and hand
33
radiocarpal jt
flexion, extension, ab, adduction, circumduction
34
carpal jts
gliding jt strengthened by ligamentous support
35
metacarpal jt
flexion extension, abduction adduction and circumduction | thumb - rotation
36
phalangeal jt
flexion extension
37
ulnar collateral lig
tip of styloid process of radius to scaphoid
38
transverse carpal lig
volar aspect of carpal bones - roof of carpal tunnel
39
PIP jt lig
collateral
40
sup radioulnar articulation
pivot jt formed by ulna and annular lig
41
distal radioulnar articulation
pivot jt formed by head of ulna with small notch on radius, held by ant and pos radioulnar ligs, small trangular disk between radius and ulna that increases stability of jt
42
middle radioulnar jt
between shaft of radius and ulna held together by interosseous membrane
43
flexors
wrist flexion, radial and ulnar deviation attached to medial epi
44
flexor digitorum superficialis
come here - narrow grip
45
flexor digitorum profundus
come here with tip of fingers - wide grip
46
flexor carpi radialis
beside pulmaris longus - resisted radial side of a wrist
47
flexor carpi ulnaris
ulnar deviation and flexion - resist on ulnar side
48
palmaris longus
10-15% borned without one - most prominent when you touch your pinky and thumb together
49
flexor pollicus longus
flex thumb down
50
extensors attach to
lat epi | wrist and finger extension, radial and ulnar deviation - any can cause tennis elbow
51
extensor digitorum
extend fingers
52
extensor carpi radialis longus
straight arm tennis elbow test
53
extensor carpi radialis brevis
bent arm tennis elbow test
54
extensor carpi ulnaris
straight arm tennis elbow test
55
extensor indicis
extend index finger
56
extensor digiti minimi
more force developed with last three fingers
57
extensor pollicis longus
game thumbs
58
abductor pollicis longus
push on metacarpal
59
hand nerve network
make it sensitive to pressure touch heat and cold
60
scaphoid fracture
8-12 weeks warrants necrosis of bone if undetected
61
scaphoid and anatomical snuffbox
EPL and EPB/APL - hosts radial artery
62
listers tuberacle align with
lunate and capitate
63
tunnels of wrist and hand
6 dorsal for extensor tendons | 2 palmar for nerves, arteries and flexor tendons
64
tunnel of guyon
palmar - between pisiform and hook of hamate - ulnar nerve and ulnar artery - handle bar injury of tingling
65
carpal tunnel
palmar - median nerve - first 3 fingers - 8 long finger flexor tendons - pisiform, navicular, hook of hamate and trapezium - tendinitis bc you have no place to go so they dig out underneath but you have buses going through entire hand tingling distal end of PL marks ant surface of tunnel FCR lies within carpal tunnel
66
carpal tunnel syndrome MOI S&S management
impinged median nerve, transverse carpal lies over median nerve, frequent typers or flexion activities sensory and motor changes along median distribution treat the cause, stretch flexors, proper ergonomics, splint at night, NSAIDS
67
scaphoid fractures MOI S&S Management
most common, Foosh,, difficult healing due to poor blood supply and doesnt show up on eray until 3/4 days after pain in snuff box guilty until proven innocent, swelling of carpal area PIER, MD, immob and not do anything for 3 days
68
forearm splints
athletes who use upper body to support weight, isometric contraction causes irritation to bone - gymnast dull ache between extensor muslces, weak and pain, irration of interosseus membrane strengthen early in season, rest and ice late in season, treat cause - deep muscle compartment more susceptible to flexor injuries
69
jumps from swing and foosh of right arm, obvious deformity of right forearm
forearm fracture
70
forearm fracture MOI S&S Management
occur to both radius and ulna audible pop or crack, pain, swelling, disability, localized tenderness and ecchymosis with possible crepitus PIER, ER, treat for shock
71
colles fracture MOI S&S Management
fall forward and throw hands forward to break it - sudden uptake of weight by wrist - end of radius and ulna to buckle deformity - dinner fork - profuse bleeding and swelling PIER, ER, splint
72
wrist sprain MOI S&S management
hyperextension or flexion pain, swelling, dysfunction PIER, splint, strengthening
73
tendinitis MOI S&S management
FCR and racquet sports - overuse pain on A/PROM, weakness treat the cause , PIER, correct mechanics, wrist splint
74
nerve compression | 4 diff conditions
entrapment palsy - narrow tunnel impinges nerve - median and ulnar under hook of hammate biships hand - damage to ulner neruve - causes flexion of 4th and 5th fingers claw hand - compression of both median and ulnar nerves drop wrist - damage to radial nerve - paralysis of wrist extensors ape hand - palsy of median nerve
75
blood under nail MOI S&S management
jam/sth landing on nail pain, blood first few hrs - tiny whole with dril to release blood and relieve pain - clean with antiseptic - heat a paper clip
76
mallet fingers MOI S&S Management
jersey finger, stronger flexors blow on distal aspect of the finger and aculse the extensor tendon pain at DIP, unable to extend DIP and TOP PIER, splint, xray, surgical not great
77
boutonniere deformity MOI S&S Management
rupture of the extensor tendon at the middle phalanx unable to extend DIP PIER, splint for 5-8wks
78
game keepers thumb/skiers thumb MOI S&S Management
UCL sprain of MCP of thumb - skiers and soccer players - forceful add/abduction of proximal phalanx and hyperextension or flexed pain over UCL, weak and painful pinch, TOP PIER, xray, tape
79
boxers fracture MOI S&S management
break end of pinky punching sth hard - end of metacarpal bone takes brunt of impact - neck and bends toward the palm 4th and 5th meta - painful and swollen - dont rotate and bucklet it down - gutter/sand splint xray, PIER, splint 4th and 5th