In addition, patients needed to have at least one of the following: weakness in the muscles innervated by the SN or its branches sensory abnormality in skin areas supplied by the branches of the SN abnormality in nerve conduction studies of the branches of the SN needle EMG abnormality in the muscles innervated by the SN or its branches. The length of the needle used for administration for IM injection was 38 mm. The injection site was the outer upper quadrant of the buttock. The injection was administered by a paramedic or a nurse into the gluteus maximus muscle of the patients. Patient complaints had to occur after gluteal IM injection. Patients who were admitted to our EMG laboratory between July 2018 and February 2020, and whose clinical and electrodiagnostic findings were compatible with SNIII, were included in this retrospective cohort study.

All participants provided written informed consent and the study complied with the ethical principles as set out by the Declaration of Helsinki. The present study was approved by the Institutional Review Board (IRB) of Adana City Training and Research Hospital (IRB number: 45/623). Thus, we wanted to obtain information about the pathophysiology of neuropathic pain in SNIII. In this study, we aimed to determine whether there is a relationship between neuropathic pain and nerve conduction studies on SNIII. Nerve conduction studies and needle electromyography (EMG) have an important place both in the actual diagnosis and differential diagnosis of SNIII. The diagnosis of SNIII can be made using clinical findings and electrodiagnostic tests. Pain occurs in the majority of the patients, which may limit their daily activities. Weakness in the muscles innervated by the SN and its branches, as well as sensory abnormalities over the skin areas supplied by these nerves, result from SN injury. SNIII can cause clinical manifestations ranging from mild sensory complaints to severe motor weakness. Despite the precautions taken, SN injury due to IM injection (SNIII) still continues to be a health problem. Sciatic nerve (SN) injury is a well-known condition that can occur due to hip surgery, gluteal intramuscular (IM) injection, compression, or hip lesions.

Nerve conduction study for sciatica