Pediatric Radiology Department, South Hospital, boulevard de Bulgarie, 35200 Rennes, France.
Orthop Traumatol Surg Res. 2011 Oct;97(6):629-33. doi: 10.1016/j.otsr.2011.03.023. Epub 2011 Sep 15.
Irreducible developmental dysplasia of the hip (DDH) in newborns is a rare entity. The different obstacles preventing reduction have been described in the literature.
A clinical form of DDH with hypertrophy of the cartilage of the acetabular roof (acetabular bulge) can be reliably identified on ultrasound and should probably be defined as a separate entity.
For the first time, the authors report their experience, a review of the literature and the radiographic description (ultrasound, arthrography MRI) of irreducible neonatal DDH due to hypertrophy of the cartilage of the acetabular roof (acetabular bulge) in 12 infants (15 hips).
Neonatal sonography seems to be sufficient to identify this specific clinical entity without any additional work-up. This sonographic sign could help determine the therapeutic strategy earlier in this severe and complex form of DDH.
新生儿先天性髋关节发育不良（DDH）是一种罕见的疾病。文献中已经描述了导致髋关节无法复位的各种障碍。
一种髋关节发育不良的临床形式，表现为髋臼顶软骨（髋臼突）肥大，可以在超声检查中可靠地识别出来，可能应该被定义为一个单独的实体。
作者首次报告了他们的经验，对文献的回顾以及 12 例（15 髋）由于髋臼顶软骨（髋臼突）肥大导致的不可复位新生儿 DDH 的放射学描述（超声、关节造影、MRI）。
新生儿超声检查似乎足以识别这种特定的临床实体，而无需进一步检查。这种超声征象可以帮助在这种严重和复杂形式的 DDH 中更早地确定治疗策略。
