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Journal of Korean Neurosurgical Society 2001;30(10): 1187-1192.
Surgical Anatomy of Lateral Extracavitary Approach to the Thoracolumar Spine: Cadaveric Study.
Sang Don Kim, Jung Keun Suh, Sung Kon Ha, Joo Han Kim, Tae Hyung Cho, Jung Yul Park, Hyun Kim
1Department of Neurosurgery, College of Medicine, Korea University, Seoul, Korea.
2Department of Anatomy, College of Medicine, Korea University, Seoul, Korea.
The lateral extracavitary approach(LECA) to the thoracolumbar spine is known as one of procedure which allows not only direct vision of pathologic lesion, but also ventral decompression, and dorsal fixation of the spine through the same incision. However, some drawbacks of LECA, including the technically- demanding, time-consuming, unfamiliar surgical anatomy and excessive blood loss, make surgeons to hesitate to use this approach. This study is to provide the surgical anatomy of LECA using cadavers, for detailed informations when LECA is considered for the surgery.
We performed the 10 cadaveric studies, 7 male and 3 female, and careful dissection was carried out on right side of thoracolumbar region, except one for thoracic region. The photographs with micro-lens were taken to depict the close-up findings and for demonstrating detailed anatomy.
The photographs and hand-drawings demonstrated the relationships among the musculature, segmental vessels and nerve roots seen during each dissection plane. The lateral branches of dorsal rami of spinal nerve and the transverse process were confirmed to be the most important landmark of this approach.
We concluded that detailed anatomical findings for LECA through this step-by-step dissection would be useful during operative intervention to reduce the intraoperative complications in LECA.
Key Words: Lateral extracavitary approach(LECA); Cadaveric study; Thoracolumbar spine
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