A Rare Case of C8 Radiculopathy Due to Cervical Spine Synovial Cyst

Frank Joseph Tomecek Jr.* and Merrill Sapp

A Rare Case of C8 Radiculopathy Due to Cervical Spine Synovial Cyst

Cervical spine synovial cysts are rare degenerative spinal abnormalities
when compared to more frequently noticed degenerative cyst in the lumbar spine.

Many times, cervical synovial cysts can be asymptomatic.
However, as in the cervical spine, synovial cysts can cause nerve root compression
and in the cervical spine can cause spinal cord compression,  especially,
when acute hemorrhage and/or a marked increase in the size of the cyst occurs,
and thus, they can result in radiculopathy and/or myelopathy.

The authors report a unique case of a 69-yearsold female who presented
with a right C7-T1 synovial cyst causing right C8 radiculopathy and
early myelopathy.

This case is felt to be unique, because the diagnosis of the right
C8 radiculopathy was confirmed on Electromyography testing.

The patient was also found not to have any signs of carpal tunnel syndrome.
In addition, the diagnosis was further supported by a myelogram
Computed Tomography scan done after the Magnetic Resonance Imaging.

The MRI showed multiple levels of degenerative spondylosis, namely at C4-5, C5-6,
and C6-7 with the question of stenosis at C7-T1, wrose on the right.

The myelogram CT scan showed a much more clear-cut synovial
cyst causing right sided C8 neural impingement and
foraminal encroachment.

Flexion/extension x-rays and the myelogram showed that the patient
had a very minimal subluxation and a synovial cyst in the cervicothoracic
junction is treated with spinal fusion.

She had nearly complete resolution of symptoms post operatively
and did not develop instability in the follow-up period.

Orthop Res Traumatol Open J. 2016; 1(1): 1-4. doi: 10.17140/ORTOJ-1-101