Although extensive laminectomy and facet resection are often performed during decompression laminectomy for thoracic myelopathy treatment, postoperative instability is uncommon due to the stable structure of the thoracic vertebrae supported by rib cages [1]. However, at the thoracolumbar junction, excessive facet resection can induce segmental instability and cause recurrent thoracic myelopathy, even in minimally invasive surgeries [2]. In such cases, additional fusion and instrumentation are necessary. However, microscopic thoracic interbody fusion is technically challenging due to the narrow surgical corridor obstructed by rib heads and self-retractors.