Caudal epidural injections have been commonly performed in patients with low back pain and radiculopathy. Conventional caudal epidural injections, which the needle is advanced into the sacral canal, present a potential risk of penetration of the epidural venous plexus or dura. The investigators hypothesized that a new caudal injection technique, which the needle only penetrates the sacrococcygeal ligament without being inserted into the sacral canal, might represent a safe alternative, with a lower incidence of intravascular injections and patient's discomfort during the procedure than the conventional technique. The study is designed to investigate the influence of the depth of the inserted needle on successful epidurogram and clinical outcome in caudal epidural injections under the ultrasound and digital subtraction angiography.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
DOUBLE
Enrollment
130
new caudal injection technique is applied to the Group B, which is that the needle only penetrates the sacrococcygeal ligament without being inserted into the sacral canal
Yonsei University College of Medicine, Department of internal Medicine, Division of Endocrinology, Severance Hospital, Diabetes Center
Seoul, South Korea
the incidence of intravascular injection
the incidence of intravascular injection in the conventional method group and the new method group during the caudal epidural injections.
Time frame: 5 seconds after injection of contrast media via block needle.
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