Orthopedic Pediatrics Flashcards
1
Q
DDH
A
-developmental dysplasia of the hip
2
Q
Cause of DDH
A
- mechanical-positional
- cultural
- increased incidence with torticollis
3
Q
DDH Population
A
- 70% female
- first born
- heredity
- breech birth
4
Q
DDH Classifications
A
- normal
- subluxable
- dislocatable
- subluxed
- dislocated
5
Q
DDH Evaluation Instability tests
A
- Barlow
- Ortolani
6
Q
Barlow
A
- dislocates a reduced hip
- hip flexion, adduction with posterior force
7
Q
Ortolani
A
- reduces a hip that is out
- flexed hips, abd with distraction
8
Q
DDH Appearance
A
- LLD, Galeazzi, Uneven Thigh folds
- Waddling gait with lordosis
- limited hip abduction
9
Q
DDH and limited hip abduction
A
- Unilateral late diagnosis-difference of 10*
- Bilateral <60*
10
Q
DDH Diagnostic Imaging
A
- US: 6-8 weeks
- Radiographs after 4 months
- AP, frog leg
11
Q
DDH Radiograph Eval
A
- Shenton’s line
- Hilgenreiner’s Line
- Perkin’s line
- Acetabular angle
12
Q
Shenton’s line
A
inf neck and inf border of sup pubic ramus
13
Q
Hilgenreiner’s line
A
-horizontal through triradiate cartilages
14
Q
Perkin’s Line
A
- perpendicular to hilgenreiner’s line
- intersect lateral acetabular roof
15
Q
-Acetabular angle
A
- hilgenreiner’s line at tri radiate to acetabular roof
- <40* significant at birth
16
Q
DDH Treatment
A
- <6 months: observation; abduction orthosis
- 6-12 months: orthotics
17
Q
Pavlik Orthosis
A
- DDH
- works well if diagnosed under 6 weeks old, bilateral, acetabular angle <35*
