Spondylolisthesis with Uncommon Congenital Deformity of L4-L5 Vertebral Fusion Treated by Oblique Lumbar Interbody Fusion.


Department of Neurosurgery, Xuanwu Hospital of Capital Medical University, Beijing, China. Electronic address: [Email]


BACKGROUND : Diagnosis and management of congenital anomalies of the spine can be a challenge because of their complex presentations. We present an uncommon case of congenital deformity of the spine with L4-L5 vertebral fusion, mimicking a single vertebra, and L3 spondylolisthesis treated by oblique lumbar interbody fusion (OLIF).
METHODS : A 69-year-old woman presented with increasing lower back pain radiating to the left leg, with aggravation of symptoms for the past 6 months, causing difficulty in walking. She also complained of paresthesia along the L3-L5 dermatomes in both legs, with more prominence on the left side. Imaging revealed fusion deformity of the L4-L5 vertebrae, as well as degenerative spondylolisthesis at the L3-L4 level. After treatment with OLIF, the patient had an uneventful recovery period. Comparisons were made between the preoperative and 6-month follow-up visual analog scale and the Oswestry Disability Index scores. The patient showed significant improvement in the scores, as well as in her symptoms.
CONCLUSIONS : OLIF is a promising technique that can be applied in the management of degenerative disk diseases and also for deformities that may be formidable to treat by adopting the traditional posterior approach.


Deformity,Lateral approach,Oblique lumbar interbody fusion,Spondylolisthesis,