Ipsilateral hip dysplasia in patients with sacral hemiagenesis: a report of two cases

Case Reports in Orthopedics
Tadatsugu MorimotoMasaaki Mawatari

Abstract

Sacral agenesis (SA) is a rare condition consisting of the imperfect development of any part of the sacrum. This paper describes two cases of the rare cooccurrence of ipsilateral SA and developmental dysplasia of the hip (DDH) and analyzes possible contributory factors for SA and DDH. Each of a 16-year-old female and 13-year-old female visited our hospital for left hip pain and limping. The findings of physical examinations showed a lower limb length discrepancy (left side) in both cases, as well as left hip pain without limitations of the range of motion or neurological deficits. Initial radiographs demonstrated left subluxation of the left hip with associated acetabular dysplasia and partial left sacral agenesis. MRI revealed a tethering cord with a fatty filum terminale, and periacetabular osteotomy combined with allogeneic bone grafting was performed. After the surgery, the patients experienced no further pain, with no leg length discrepancy and were able to walk without a limp, being neurologically normal with a normal left hip range of motion. The cooccurrence of SA and DDH suggests a plausible hypothesis to explain the embryogenic relationship between malformation of the sacrum and hip.

References

Apr 18, 2003·International Orthopaedics·D H UcarS Omeroglu
Jun 27, 2006·International Journal of Obstetric Anesthesia·F U AhmadA Garg
Jul 26, 2011·Strategies in Trauma and Limb Reconstruction·Pedro Antonio Sánchez Mesa

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