Ръчните прийоми за диагностика/изследване са на Барлов(оу) и Ортолани.
От там нататък е УЗ и рентгенографското изследване.
- Graf classification:
- coronal plane is imaged by placing the transducer over the lateral aspect of the hip;
- type I: normal hip:
- type II < 3 mo physiologic immaturity and > 3 mo mild dysplasia:
- type II hip is immature or mildly dysplastic and has a more shallow acetabulum with a round rim;
- in children younger than 3 months, most of these will spontaneously resolve;
- in children older than age 3 months, the deformity is expected to persist without treatment;
- type III: dislocation
- acetabulum is shallow;
- cartilaginous roof is displaced with eversion of labrum;
- type IV: high dislocation
- acetabular cup is flat and has the worse prognosis;
- femoral head is laterally and superiorly displaced;
- labrum is interposed between the femoral head and the lateral wall of the ilium;
http://radiopaedia.org/articles/ultrasound-classification-of-ddh type I : alpha angle > 60 degrees (normal)
type Ia : beta angle < 55 degrees
type Ib : beta angle > 55 degrees
type II
type IIa : alpha angle 50 - 59 degrees
type IIb : alpha angle 50 - 59 degrees
type IIc
alpha angle 43 - 49 degrees
beta angle < 77 degrees
type D ("about to decenter")
alpha angle 43 - 49 degrees
beta angle > 77 degrees
type III : alpha angle < 43 degrees
type IIIa and IIIb distinguished on the grounds of structural alteration of the cartilaginous roof
type IV
alpha angle < 43 degrees
dislocated with labrum interposed between femoral head and acetabulum
УЗ изследване на тазобедрени стави се прави на около 2 навършени месеца ( профилактичното).
По-ранни изследвания не са достоверни.
