JIA Flashcards
What is JIA
diverse group of arthritis conditions with unkown cause that begins BEFORE 16 and lasts atleast 6 weeks
How many weeks must JIA last?
at least 6 weeks
How is JIA charcaterized
joint inflammation, pain, stiffness, and swelling in one or more joitns
Is it symmetrical or not?
Compared to adult RA it is less symmetrical (known as juveinile rheumatoid arthritis) (JRA)
What may predispose you to JIA
Genetics, environmental afctors, and infections
F>M
What is oligoarticular JA
invovled 4 or less joints in the first 6 months
* Most common subtype
* most prevelant in large joitns (knee), ankles, and elbows
*AKA Pauciarticular JIA
Polyarticular
Involves 5 or MORE joints in the first 6 months
Systemic JIA
Invovles joitn inflammation along with a fever and other symptoms during the first 6 months
What is enthesitis JIA
Associated with inflammation of the entheses, where tendons or ligaments attach to bone within the first 6 months
What is Psoriatic JIA
linked to Psoriasis, a skin condition, within the first 6 months
What are the 4 main clinical features of JIA
Joint: Swelling, END-RAND STRESS PAIN,s tiffness, especially in the morning or after inactivity
Systemic (subtype): fever, fatigue, and rash
Growth abnormalities; Chronic inflammation can lead to growth disturbances and limb length discrepancies
Other symtpoms: Muscle weakness and atrophy, eye disease (uveitis), and fatigue*
What happens in the C-Spx
Loss of lordosis
TMJ
Micrognathia (small jaw) and altered teeth occlusion
TSpx
Scoliosis secondary to LONG STANDING LLD
Lumbar Spx
Excessive Lordosis SECONDARY TO HIP FLEXION CONTRACTURE
Shoulders
Over growth of humeral head and irregular shape
Shallow glenoid fossa with increased risk of subluxation
Elbows
overgrowth of the radial head restricts ROM (ESPECIALLY EXT)
- ulnar N entrapment
Wrist
rapid loss of EXT: shortening of flexors, volar subluxation
Wrists rest in flexion and ulnar deviation
Hand
PIP contractures more common THAN DIP
Marked decrease in grip strength
Hip
Femoral head overgrowth
Limited weightbearing in young children - lead to shallow acetabulum and trochanteric growth abnormalities
Flexion contracture the most common(may be masked by lumbar lordosis)
Knee
MOST COMMON
- Rapid weakness and atrophy of quadriceps
Knee flexion contracture due to shortening of hamstrings, TFL and ITB
- Overgrowth of distal femur contributes to LLD in unilateral diseases
Chronic synovitis causes overgrowth of the femoral condyle, RESULTING IN VALGUS DEFORMITY
Ankle and foot
Altered growth causes bony changes in the tarsals, with potential for fusion
How do we diagnose?
Diagnosis of exclusion, based on history, physical examination, lab tests and imaging
Thermal Therapy (Symptom management)
- exercising in a warm pool relieves pain and imporves mobility
- Superficial or deep heat applied over the inflamed joints is CONTRAINDICATED
- locally applied cold decreases intraarticular temperatures and can reduce joint pain