hip clinical conditions part 2 Flashcards

1
Q

Developmental dysplasia of the hip (DDH)

refers to the complete spectrum of pathologic conditions involving the developing hip, ranging from acetabular dysplasia to hip subluxation to irreducible hip dislocation

pseudoacetabulum usually is present

this condition always accompanies other congenital anomalies or neuromuscular conditions, (arthrogryposis and myelomeningocele)

A

Congenital Hip Dysplasia

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2
Q

most common disorder of the hip in children

A

Congenital Hip Dysplasia

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3
Q

80% of affected children for Congenital Hip Dysplasia

A

female

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4
Q

Exact cause of Congenital Dysplasia

A

unknown but is thought to be multifactorial (genetic, hormonal, and mechanical)

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5
Q

Hip more commonly involved in Cogenital Dysplasia

A

left hip is more commonly involved

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6
Q

Risk factors of Congenital Hip Dysplasia

A

females and firstborns, and with breech presentation (30% to 50%)

commonly associated with intrauterine “packaging” problems (prematurity, oligohydramnios, congenital dislocation of the knee, congenital muscular torticollis and metatarsus adductus)

family history is a strong risk factor

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7
Q

instability of the hip is the key clinical finding

hip clicks are nonspecific physical findings

A

neonates

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8
Q

limitation of motion and apparent limb shortening

Usual signs, leg length difference, you can “open” one leg but the not the other, and the skin lines = shorter leg

A

infants > 6 months

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8
Q

restricted motion, limb-length inequalities, limp and waddling gait

A

toddlers

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9
Q

all the above findings plus fatigue and pain in the hip, thigh, or knee

A

adolescents

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10
Q

hips are flexed to 90°; positive if one knee (the involved side) is lower than the other – for unilateral cases only

A

Galeazzi (Allis) test

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11
Q

posterolateral force to the extremity with the hip in a flexed and adducted position; positive if the hip subluxates or dislocates

Posterolateral force to the hip, and you feel a click= dislocated hip.

A

Barlow test

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12
Q

abduction and lifting of the proximal femur anteriorly; positive if the dislocated hip is reduced

To relocate the hip

A

Ortolani test

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13
Q

ROM will be normal in children < 6 months because

A

contractures have not yet developed

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14
Q

decrease in abduction (most sensitive test)

A

ROM

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15
Q

outline of what the hip would look like

A

Plain Radiographs

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16
Q

line drawn horizontally through each triradiate cartilage of the pelvis

A

Hilgenreiner line

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17
Q

drawn perpendicular to the Hilgenreiner line at the lateral edge of the acetabulum

A

Perkin line

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17
Q

continuous arch drawn along the medial border of the femoral neck and superior border of the obturator foramen

A

Shenton line

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17
Q

Radiographic Findings of Congenital Hip Dysplasia

A

Ultrasonography and Plain Radiographs

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18
Q

angle formed by an oblique line (through the outer edge of the acetabulum and triradiate cartilage) and the Hilgenreiner line

A

Acetabular index

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19
Q

Normal value of Congenital Hip Dysplasia in NEWBORNS

A

normal value averages 27.5°

20
Q

the acetabular index decreases to 21°

A

By 24 months of age

20
Q

angle formed by a vertical line through the center of the femoral head and perpendicular to the Hilgenreiner line and an oblique line through the outer edge of the acetabulum and center of the femoral head

reliable only in patients older than 5 years

<20° is considered abnormal

A

Center-edge angle of Wiberg

20
Q

Developmental Dysplasia Treatment

0-6 mos; dysplatic

A

Pavlik harness

20
Q

Developmental Dysplasia Treatment

6-18 mos; dislocated

A

Closed or open reduction

21
Q

Developmental Dysplasia Treatment

> 18 mos; dislocated

A

open reduction, femoral shortening

pelvic osteonomy

22
Q

femoral shortening osteonomy

A

indicated in high-riding dislocations

typically in children >= 2 yrs old

23
Q

Pelvic osteonomy

A

indicated for significant dusplasia

often in children >= 18-24 mos old

24
Q

Cause of Hip Dislocation

A

Trauma

25
Q

Classifications of Hip Dislocation

A

Anterior Dislocation, Posterior Dislocation, Central Dislocation

26
Q

Hip is flexed, abducted and externally rotated at the moment of injury

A

Anterior Dislocation

27
Q

Hip is flexed, adducted and internally rotated Most common type

A

Posterior dislocation

28
Q

Direct impact on the lateral aspect of the greater trochanter forcing head into the acetabulum

Associated with acetabular fracture

A

Central dislocation

29
Q

Sciatic nerve palsy (common in posterior dislocation)
Fracture
Myositis ossificans
Avascular necrosis of femoral head
Post traumatic arthritis

A

Complications of Hip Dislocation

30
Q

Diagnosis of Hip Dislocation

A

X-ray, CT Scan

31
Q

Non operative treatment of Hip Dislocation

A

close reduction

32
Q

Operative treatment of Hip dislocation

A

consisting of open reduction for failure of closed reduction; concomitant fractures are also fixed

33
Q

Direct trauma to the iliac crest

A

Hip Pointer

34
Q

Signs and symptoms of Hip Pointer

A

Tenderness on the iliac crest, may have pain over iliac crest and during ambulation and active abduction

35
Q

Diagnosis for Hip pointer

A

X-ray if fracture is supected

36
Q

Treatment for Hip Pointer

A

Rest, ice, NASIDs, local steroid

Anesthetic for severe pain; gradual return to activities with progression

37
Q

Can have pain on lateral side of knee when stretched

History of lateral hip, thigh or knee pain, snapping as iliotibial band passes over the greater trochanter

A

Iliotibial band syndrome

38
Q

Patient will lie down on his side. Lying on left, right thigh over left. Try to put the right thigh behind, making the knee touch the bed or table.

A

+ Ober’s test

39
Q

If patient cannot do it, there is tightness of strain to the iliotibial band =

A

+ ober’s test

40
Q

Treatment of Iliotibial band syndrome

A

Modification of activity
Footwear (maybe patient is flatfooted)
Stretching program
Ice
NSAID

41
Q

Coxa sultans

Patients feel snap when walking

A

Snapping hip

42
Q

Iliotibial band over the prominent trochanter (most common)

Iliopsoas over the iliopectineal eminence

A

Extra-articular

43
Q

Labral tear

A

Intra-articular

44
Q

Diagnosis of Snapping Hip

A

Ultrasound

if in the labrum, MRI is better

45
Q

Treatment for Snapping Hip

A

Stretching the tight structures, NSAID, steroid injections

Surgery for failure of conservative management

46
Q

Snap noted over the prominence of the greater trochanter during hip flexion and extension or rotation

When patient adducts the hip and rotate the hip from external to internal rotation, snap is produced

A

Sign and Symptom of Snapping Hip in Iliotibial Band

47
Q

Snap felt at groin during extension of hip

Snap is produced with patient in supine and hip is moved from flexion to extension in an abducted and externally rotated position

Feels the snap anteriorly

A

Sign and Symptom of Snapping Hip in Iliopsoas