Common Disorders of the Hip Flashcards
Avascular Necrosis
What is the avascular necrosis?
areas of dead trabecular bone and bone marrow
- this goes to the subcondral plate
Avascular Necrosis
What are the subjective findings?
- pain @ groin (radiate to lateral hip, knee or ass)
- “throbbing and deep”
- pain is intermittent with gradual onset
- antalgic shift
Avascular Necrosis
What are common risk factors?
- cumulative corticosteroid total dose
- alcohol abuse
- systemic lupus
- sickle cell
- trauma
- cancer
Avascular Necrosis
What is the objective findings?
- painful ROM (with forced IR)
- pain with SLR
- antalgic gait
Avascular Necrosis
What are the special tests?
based on:
- subjective
- physical
- imaging
Avascular Necrosis
What is indicated in imaging?
- AP view of pelvis
- AP frog lateral radiographs
Avascular Necrosis
What is the best intervention?
Surgery is the best result
Avascular Necrosis
What is the prognosis?
Success related to the stage when care was started
Avascular Necrosis
What are the complications?
incomplete fx and superimposed degenertative arthritis
What is Legg-Calve-Perthes disease?
An idiopathic osteonecrosis of the head aged 4-10
- formed with less blood
- unilateral in 90% of pt
Legg-Calve-Perthes Disease
What is the assumed cause?
localized manifestation of generalized disorder of the epiphyseal cartilage that happens in the proximal femur
Legg-Calve-Perthes Disease
What population is most affected?
4x more common in boys
Legg-Calve-Perthes Disease
What are the subjective findings?
- vague ache in the groin that goes to medial thigh and inner knee
- early stage muscle spasm
Legg-Calve-Perthes Disease
What are the objective findings?
- limp (slight dragging)
- atrophy of quads
- may be small for their age
- (+) trendelenburg
- out-toeing
- decreased abduction and IR
- hip flexion contracture (0-30 deg)
Legg-Calve-Perthes Disease
What is the medical/imaging studies?
- AP and frog-lateral radiographs of pelvis
- normal early on
- progress to fragmentation
- irregularity
- eventual collapse of head
Legg-Calve-Perthes Disease
What are the interventions?
Less than 6 y/o and min capital femoral epiphysis involvement and normal ROM = intermittent physicals and radiographs every 2 months
More severe = operative or non-op
What is slipped capital femoral epiphysis?
Displacement of head thru the physis
- usually occurs during adolescent growth spurt
Slipped Capital Femoral Epiphysis
What is the position of the femoral head?
It stays in the acetabulum while the femoral neck is displaced anteriorly from the capital femoral epiphysis
What is the most common disorder of the hip in adolescents?
Slipped capital femoral epiphysis
Slipped Capital Femoral Epiphysis
What is the subjective findings?
- pain with activity
- hx of groin pain or medial thigh pain
- around 45% report knee or lower thigh for intial sx
- pain is dull and aching
- may be mild weakness in the leg
- may be no hx of trauma (can be so bad that theres pain turning in bed)
Slipped Capital Femoral Epiphysis
What are the objective findings?
- antalgic gait with limp (ofteen ER of involved foot)
- decreased ROM hip
- PROM will show ER of hip
- LE is 1-3 cm shorter
affected ROM - IR, abd and flexion
Slipped Capital Femoral Epiphysis
What does it cause?
The only peds disorder that causes greater loss of IR when the hip is moved into flexion
Slipped Capital Femoral Epiphysis
What are the predisposing factors?
- obesity
- male gender
- greater involvement with sport activities
Slipped Capital Femoral Epiphysis
What are the special tests?
IR with hip flexed to 90 deg
Slipped Capital Femoral Epiphysis
What are the medical/imaging studies?
AP and frog-lateral radiographs of the pelvis
Slipped Capital Femoral Epiphysis
What are the interventions?
- sx relief
- containment of femoral head
- ROM restoration
- surgical fixation
What is the description of stress fx on the femoral neck?
because of the accelerated bone remodeling from repeated stress
Stress fx
What is the population affeected with this?
In military recruits and athletes (runners especially)
Stress fx
In older populations, where is the fracture?
on the superior side of the neck
Stress fx
In younger populations, where is the fracture?
in the inferior side of the neck (compression-side fracture)
Stress fx
What is the subjective findings?
- suddeen hip pain (associated with revent changes in training or surface)
- pain the deep thigh (early sx)
- pain during WB or at extremes of hip motion = radiate to knees
- night pain happens with fx progression
Stress fx
What are the objective findings?
- physical exam is usually (-)
- may be empty end feel
- pain at extremities of hip ER or IR
- pain with resisted hip ER
Stress fx
What are the special tests?
Not one test
- resisted SLR = (+) pain @ thigh or groin
- patellar-pubic percussion tests can be +
- Flucrum test = (+) sharp pain and apprehension
Patellar-pubic
- sensitivity = 0.96
- specificity = 0.76
Stress fx
What are the medical/imaging studies?
- radiographs taken too soon only (+) in 20% of cases
- best dx/d with MRI
Stress fx
For tension side fractures, how are they treated?
treated surgically
Stress fx
If there is no fx line but sclerosis, what is the intervention?
modified best rest to NWB on crutches until no sx
- pain free = progress to wt-bearing
- significant PWB is pain free = cycling and swimming
- weekly radiograph until full w/o pain
Stress fx
If there is a fx but no displacement, what is the intervention?
intial period of best rest or complete NWB then WB as sx permit
What is a 2 joint hamstring strain?
the strain/rupture of 1 or more of the 3 hammies
- muscle tears are usually partial
- eccentric phase of the muscle usually are the time for tears
Hamstring Strain
What are the subjective findings?
- distinct MOI w/ pain right away during full stride running or while quick deceleration
- can hear a “pop”
- posterior thigh pain
- gets worse with knee flexion
Hamstring Strain
What is the objective findings?
- tenderness with PROM stretching of hammies
- tender to palpation
- Pain w/ resisted knee flexion (IR/ER to isolate)
Hamstring Strain
What is the medical studies needed?
Radiographs are rarely needed unless there is a question of a fracture or bony avulsion injury
Avulsion - tendon tear with bone
Hamstring Strain
What is grade 1 intervention?
continue with activities as much as possible
Hamstring strain
What is grade 2 intervention?
5-21 days of rehab or 3 weeks
Hamstring Strain
What is grade 3 intervention?
3-12 weeks of rehab