Blue Boxes LE Flashcards
Why are adolescents more vulnerable to acute trauma injuries
due to the fact adolescents are still growing and still have cartilaginous models that are being transformed at the endochondral ossification
Epiphyseal plate
disc of hyaline cartilage between the metaphysis and the epiphysis of the mature long bone
these are susceptible to fracture due to the combined stress from physical activity and growth via the stretching of the muscles
(osteochondrosis)
Pelvic fracture
fractures of the “hip” bone
Hip fracture
more commonly applied to fractures of the femoral head, neck and trochanters
Avulsion fractures of the hip bone
may occur in sports from sudden acceleration and deceleration forces like sprinting or kicking in a ball
these occur at the apophyses which are bony projections that lack secondary ossification centers
common areas: anterior superior and inferior iliac spines, ischial tuberosities, and ischiopubic rami
Coxa vara
significantly decreased angle of inclination between the long axis of the femoral neck and the femoral shaft due to weakening the neck of the femur
the distal limb deviates toward midline
causes mild shortening of the lower limb and limits passive abduction of the hip
Coxa valga
increase in the angle of inclination between the long axis of the femoral neck and the shaft due to weakening of the femoral neck
the distal element deviates away from midline
Dislocated Epiphysis of femoral head
older children the epiphysis of the femoral head may slip away from the femoral neck due to a weakened epiphyseal plate
due to acute trauma or repetitive microtraumas especially with abduction and lateral rotation of the thigh
often need radiographic examination to find
What are the two main locations of fractures of the proximal femur
transcervical: middle of neck
intertrochanteric
these occur due to indirect trauma (stumbling or stepping down hard off a curb)
this is because of the angle of inclination making the fractures inherently unstable and impaction
Intracapsular fracture
occurs within the hip joint
complicated by degeneration of the femoral head leading to vasculature trauma
how do Fractures of the greater trochanter and femoral shaft occur
results from direct trauma
occur frequently during motor vehicle accidents and sports
Spiral fracture
occurs at the femoral shaft resulting in foreshortening as the fragments override or the bone is fractured into multiple pieces
can take up to a year to union
Fractures of the inferior or distal femur
may be complicated due to seperation of the condyles and misalignment of the articular surfaces of the knee joint
can cause hemorrhage from cutting the large popliteal artery that runs on the posterior surface of the bone
Compound fracture of the tibia
usually occurs in the middle and inferior third of the shaft since it is the narrowest part of the bone
due to direct trauma “bumper fracture” from hitting the bumper of a car
has poor blood supply since anterior part is subcutaneous
if the fracture hits the nutrient canal it predisposes the patient to nonunion of the bone fragments due to the damage of the nutrient artery
Transverse march stress fracture
inferior third of the tibia
occurs in people who take long hikes before they are conditioned
may fracture the anterior cortex of the tibia
can also be caused by indirect violence applied to the tibial shaft when the bone turns as the foot is fixed
Diagonal fracture
torsion during skiing produce a diagonal fracture of the tibial shaft at the junction ofthe middle and inferior thirds and will fracture the fibula as well
can lead to limb shortening due to the overriding as well
Boot top fracture
fracture at where a a skiboot sits due to highspeed forward fall which angles the leg over the rigid ski boot
osgood schlatter disease
prominance of tibial tuberosity elongated and fragmented due to disruption of the epiphysial plate causing inflammation of the tuberosity and chronic recurring pain
Fibial Fractures
usually occur 2-6 cm to the distal end of the lateral malleolus and are often associated with fracture-dislocations of the whole ankle joint
usually occurs when a person slips and are forced into an excessive inverted position
or can occur with eversion as well
Bone Grafts
replacement of affected segments by a bone transplant may avoid amputation
fibula is a common source of bone grafting since normal actions can still be kept even after removal of segments of the fibula
free vascularized fibular transfers
help restore skeletal integrity to upper and lower limbs in which congenial bone defects exist and to replace segments of bone after trauma
remaining fibula usually doesnt regenerate
nutrient artery is removed with the bone so that the graft will remain alive in the new site it is transplanted too
Interosseous infusion
method of delivering hydration, blood, and medications directly into the medullary cavity of a bone when peripheral venous access is difficult to impossible
used in children with traumatic shock or circulatory collapse
usually done in the proximal tibia, needles are inserted 2cm distal and slightly medial to tibial tuberosity
special needles are used to get through the bone
IO infusion must be replaced with peripheral venous or central line access within 24 hours due to risk of osteomyelitis
Calcaneal fracture
usually a hard fall on to the heel, fractureing the calcaneus into several pieces and producing a commiuted fracture
this fracture disables walking because it usually affects the subtalar joint where the talus articulates with the calcaneus
Fracture of the talar neck
may occur during dorsiflexion of the ankle (occurs when someone is pressing hard on the brake pedal when trying to stop on a head on collision
some cases the talus dislocates posteriorly
Dancers fracture
occurs when the dancer looses balance and puts full weight on the metatarsal fracturing the bone
Fatigue fractures of the metatarsals
usually occur from prolong walking, these typically are transverse due to repeated stress on the metatarsals
Avulsion fracture of the tuberosity of the 5th metatarsal
foot is suddenly and violently inverted and the tuberosity of the 5th metatarsal may be avulsed by the tendon of the fibularis brevis muscle
most commonly in basketball and tennis players
usually associated with ankle sprain
Os trigonum
the secondary ossification center which becomes the lateral tubercle of the talus occasionaly fails to unite with the body of the talus
maybe caused to forceful plantarflexion in early teens
may result in a bone known as a os trigonum
fracture of the sesamoid bone
the sesamoid bones of the great toe can be fractured in a car crash and make it difficult to walk since they are important on the stance phase of walking
varicose veins
when a vein becomes dilated so that the cusps of their valves do not close and actually face the wrong way
lead to blood flowing wrong way and actually can pool
Thrombophlebitis
DVT with inflammation around the involved veins
Venous stasis
venous stagnation
can be caused by:
incompetent, loose fasci that fails to resist muscle epansion, diminishing the effectiveness of the musculovenous pump
external pressure on the veins from bedding during a prolonged hospital stay or from a tight cast or bandage
muscular inactivity
Pulmonary thromboembolism
a large thrombus that breaks free from a lower limb vein that may travel to a lung which will obstruct the pulmonary artery
Saphenous Vein grafts
great saphenous vein is sometimes used for coronary arterial bypass because it is readily accessible, there is a sufficient distance occurs between the tributaries and the perforating veins so that usable lengths can be harvested, and the walls contain a higher percentage of muscular and elastic fibers than other superficial veins
the vein is inverted so that the valves do not obstruct blood flow.
Saphenous cutdown
if need to get blood, plasma expanders, electrolytes, or drugs quickly into the vein you can make a small incision anterior to the medial malleolus and find the great saphenous vein
however can cut the saphenous nerve because it runs with the great sapheonous vein
patient will complain of pain or numbness along the medial border of the foot
Nerve block of the femoral nerve
L2-L4
can be blocked 2 cm inferior the inguinal ligament, approximately a fingers breadth lateral to the femoral artery
Paresthesia will radiate to the knee and over the medial side of the leg if the saphenous nerve is affected
Enlarged inguinal lymph nodes
look for infection or even uteran cancer since some drainage comes from the perineum
Abnormalities of sensory function
to interpet abnormalities of the peripheral sensory function, peripheral nerve distribution of the major cutaneous nerves must be interpreted anatomically different from dermatome distribution of the spinal cord segments
Hip Pointer
contusion of the iliac crest that usually occurs on the anterior part (ASIS)
Charley horse
ischemia or contusion and rupture of blood vessels sufficient to form a hematoma usually consequence of tearing of fibers of the rectus femoris
caused by localized pain or muscle stiffness which follows direct trauma
Psoas abcess
pyogenic infection from chrons disease or TB that when getting into the lymph in the psoas region looks like a inguinal hernia and causes pain
Paralyzed quadriceps
person cant extend the leg against resistance
walk with a forward lean pressing on the distal end of the thigh with their hand as the heel contacts the ground to prevent inadvertent flexion of the knee joint
injury just to the vastus medialis or vastus lateralis lead to abnormal patella movement and loss of joint stability
Chondromalacia patellae
called runners knee
softening of the articular cartilage of the patella
occurs in marathon runners due to overstressing of the knee region
can occur from blow to the patella or extreme flexion of the knee
can be caused due to quadriceps imbalance
Transverse patellar fractures
may result from a blow to the knee or sudden contraction of the quadriceps
the proximal fragment is pulled superiorly with the quadriceps tendon and the distal fragment remains with the patellar ligament
Bipartite or tripartite patella
ossification abnormality to have multiple segments attached to a patella
diminution or absence of the patellar tendon reflex
result may be to lesion that interrupts the innervation of the quadriceps
Transplantation of the Gracilis
surgeons transplant the muscle to help replace damaged muscles of the hand i.e. digital flexion and extension
muscle has also been used to recreate a nonfunctional external anal sphincter