Paediatric Orthopaedics Flashcards
What is Osteogenisis Imperfecta?
brittle bone disease
there is a defect in the maturation and organization of type 1 collagen
multiple fragility childhood fracture, short stature, blue sclerae and loss of hearing
what congenital disorder is this?
Osteogenisis Imperfecta
What is Skeletal dysplasias?
DWARF!
short stature due to genetic error resulting in abnormal development of bone.
what is the most common type of skeletal dysplasia?
achondroplasia
what is achondroplasia like?
disproportionately short limbs with prominent forehead and widened nose.
joints are lax and mental development is normal
what do connective tissue disorders usually result in?
hypermobility
what is marfan’s syndrome?
an autosomal dominant or sporadic mutation of the fibrillin gene resulting in TALL STATURE WITH DISPROPORTIONATELY LONG LIMBS AND LIGAMENTOUS LAXITY
name some features associated with marfan’s syndrome?
glaucoma lens dislocation high arch palate in mouth spontaneous pneumothorax flattening of chest-pectus excavatum) heart problems-mitral regurge, aortic aneurysm and regurg long arms scoliosis long legs
what is Ehlers-Danlos syndrome?
abnormal elastin and collagen formation
Name some clinical features of Ehlers-Danlos syndrome?
profound joint hypermobility
vascular fragility with ease of bruising
joint instability
scoliosis
what are the MSK manifestations with Downs syndrome?
short stature and joint laxity and possible recurrent dislocation
What causes Duchenne Muscular Dystrophy?
a defect in the dystrophin gene which is involved in calcium transport
results in muscle weakness
how do you diagnose Duchenne Muscular Dystrophy?
raised serum creatinine phosphokinase and abnormalities on muscle biospy.
What is beckers Muscular Dystrophy?
similar to DMD but milder and they can live to 30’s/40’s instead of 20’s.
What is cerebral Palsy?
a neuromuscular disorder due to an insult to the immature brain before, during or after birth.
what is the most common expression (type) of cerebral Palsy?
spastic CP
what spina bifida?
2 halves of the posterior vertebral arch fail to fuse (probs in the first 6 weeks of gestation)
what is the mildest form of spina bifida?
spina bifida occulta
what is the most severe form of spina bifida?
spina bifida cystica
what is Polio?
a viral infection which affects motor anterior horn cells in the spinal cord or brain stem resulting in lower motor neurone deficit.
how does the polio virus enter the body?
via the Gi tract
When do you get obstetric brachial nerve palsy?
mainly in large babies and twins.
what is the most common type of obstetric brachial nerve palsy?
Erb’s Palsy
Waiter’s tip posture
Erb’s Palsy
what happens in Erb’s Plasy?
injury to the upper nerve roots (C5 and 6) resulting in loss of motor innervation of deltoid, supraspinatus, infraspinatus, biceps and brachialis
can lead to internal rotation of the humerus.
what is Klumpke’s Palsy?
a rarer type of obstetric brachial nerve palsy
injury to C8 and T1
can result in paralysis of intrinsic hand muscles and horner’s syndrome
when should a baby sit alone/crawl?
6-9 months
when should a baby stand?
8-12 months
when should a baby walk?
14-17 months
when should a baby jump?
2 years
when should a baby manage stairs by themselves?
3 years
when should a baby have head control?
2 months
when should a baby speak a few words?
9-12 months
when should a baby eat with fingers/ use spoon?
14 months
when should a baby stack 4 blocks?
18 months
when should a baby understand 200 words/ learn 10 words a day?
18-20 months
when should a baby be potty trained?
2-3 years
what is genu varum
bow legs
what is genu valgus
knock knees
what can cause genus valgum?
rickets
tumours
clumbsy and wear through shoes at an alarming rate
in toeing- feet pointing towards midline
what is femoral neck anteversion?
the femoral neck is slightly averted (pointing forward)
this can give appearance of in toeing and knock knees.
what is internal tibia torsion?
tibia rotated inward about its vertical axis. but this a normal variation and should be ignored!!
what 2 types of flat feet do you get?
mobile and fixed
which type of flat foot is there tarsal coalition?
fixed flat foot
what are curly toes?
minor overlapping of the toes and curling of the toes.. 5th toe is most affected
what is developmental dysplasia of the hip?
dislocation or subluxation of femoral head during the perinatal period which affects the development of hip
which hip is more commonly affected in DDH?
left
and girls are more commonly affected that boys
risk factors for DDH?
family history of DDH breech presentation first born babies downs syndrome other congential disorders
click or clunk with Ortolani and/or Barlow test?
DDH
what is Ortolani test?
reducing a dislocated hip with abduction and anterior displacement
what is Barlow test/
dis-locatable hip with flexion and posterior displacement.
what can you use to help diagnose DDH?
ultrasound
what is transient synovitis of the hip?
inflammation of the synovium of a joint (hip)
when do you commonly get transient synovitis of the hip?
after an upper resp tract infection
when are mosy children affected by transient synovitis of the hip?
2-10 years
name some signs/symptoms of transient synovitis of the hip?
limp or reluctance to weight bare
range of motion restricted
low grade fever
Name some investigations for transient synovitis of the hip?
x-ray to exlcude Perthes
CRP- normal
aspiartion
MRI
what is the treatment for transient synovitis of the hip?
NSAIDS and rest
what is Perthes disease?
osteochondritis of the femoral head which usually occurs between ages of 4-9 and more common in boys
name some signs/symptoms of perthes disease?
pain/limp usually unilateral loss of internal rotation (usually first sign) loss of abduction positive trendleberg test
management of perthes?
regular x ray observation and avoid physical activity
who is mainly affected by slipped upper femoral epiphysis?
FAT pre-pubertal teenage boys
what can predispose you to SUFE?
hypothyroidism and renal disease
signs/symptoms of SUFE?
pain and limp
pain may be felt in groin
CAN HAVE KNEE PAIN ONLY!!!
loss of internal rotationmof hip
treatment of SUFE?
urgent surgery
when is dislocation of the patella most common?
teenage years
girls more common
what is osteochondritis dissecans?
fragment of hyaline cartilage with some bone fragments breaks off the surface of the joint
the knee is most commonly affected.
patient presentation of osteochondritis dissecans?
poorly localised pain
effusion
locking knee (occasionally)
what is Talipes Equinovarus?
club foot
abnormal alignment of joints between talus, calcaneus and navicular.
boys more affected than girls
deformities from club foot/
plantarflexion
supination of forefoot
varis alignment of the forefoot
treatment for club foot/
early splintage!!
what is scoliosis?
lateral curvature in the spine
what is spondylothesis?
slippage of one vertebrae over another usually at l4/5 level or l5/s1 level
present with lower back pain!!