Asian Spine J.  2015 Feb;9(1):106-109. 10.4184/asj.2015.9.1.106.

Cervical Ossification of Posterior Longitudinal Ligament in X-Linked Hypophosphatemic Rickets Revealing Homogeneously Increased Vertebral Bone Density

• Shiba M
• Mizuno M
• Kuraishi K
• Suzuki H

• KMID: 2270201
• DOI: http://doi.org/10.4184/asj.2015.9.1.106

Abstract

There is no report that describes in detail the radiological and intraoperative findings of rickets with symptomatic cervical ossification of the posterior longitudinal ligament. Here, we describe a case of X-linked hypophosphatemic rickets with cervical ossification of the posterior longitudinal ligament presenting unique radiological and intraoperative findings. The patient presented progressive tetraparesis. Magnetic resonance imaging studies revealed severe cervical spinal cord compression caused by ossification of the posterior longitudinal ligament. Computed tomography scans revealed homogeneously increased vertebral bone density. An expansive laminoplasty was performed. At surgery, homogeneously hard lamina bone was burdened in drilling and opening of the laminae. The patient's neurological symptoms were improved postoperatively. Bony fusion of the hinges occurred postoperatively. Therefore, expansive laminoplasty could be performed for symptomatic cervical ossification of the posterior longitudinal ligament with X-linked hypophosphatemic rickets. However, unusual bone characters should be taken into consideration for careful operation during surgery.

Keyword

Laminoplasty; Rickets; Ossification of posterior longitudinal ligament

MeSH Terms

Bone Density*
Familial Hypophosphatemic Rickets*
Humans
Longitudinal Ligaments
Magnetic Resonance Imaging
Ossification of Posterior Longitudinal Ligament*
Rickets
Spinal Cord Compression