Cloward's 1958 landmark paper introduces the anterior cervical discectomy and fusion (ACDF) technique. It describes the surgical approach, custom drill-and-dowel instrumentation, and outcomes in the first 47 consecutive patients operated on for ruptured cervical discs. The paper answers whether an anterior corridor to the cervical spine could safely decompress nerve roots and cord while achieving rapid bony fusion.
Before 1958, posterior laminectomy was the standard for cervical disc disease. It required cord retraction for midline lesions and blind dissection through epidural veins for lateral ones, yielding notoriously poor results for central pathology.
Cloward's anterior approach changed this by showing the corridor between the carotid sheath and trachea/esophagus gives direct access to any cervical disc, central or lateral, without handling the cord or roots.
When you see a patient with cervical radiculopathy or myelopathy failing conservative care, ACDF is the default surgical option because of what this paper demonstrated: complete decompression of both soft-disc and bony pathology, 94% fusion rate, short hospitalization, and early return to function.
The key intraoperative boundary is the posterior longitudinal ligament. Cloward's one serious complication arose from violating it, causing intraspinal hemorrhage. Treat it as the last layer between your curette and the dura.
Cloward's cylindrical dowel and Smith-Robinson's tricortical strut graft (published simultaneously in 1958) both established ACDF but differ in graft geometry — a distinction that drove decades of debate and directly preceded modern cage design.
Cloward's 1958 landmark paper introduces the anterior cervical discectomy and fusion (ACDF) technique. It describes the surgical approach, custom drill-and-dowel instrumentation, and outcomes in the first 47 consecutive patients operated on for ruptured cervical discs. The paper answers whether an anterior corridor to the cervical spine could safely decompress nerve roots and cord while achieving rapid bony fusion.
Before 1958, posterior laminectomy was the standard for cervical disc disease. It required cord retraction for midline lesions and blind dissection through epidural veins for lateral ones, yielding notoriously poor results for central pathology.
Cloward's anterior approach changed this by showing the corridor between the carotid sheath and trachea/esophagus gives direct access to any cervical disc, central or lateral, without handling the cord or roots.
When you see a patient with cervical radiculopathy or myelopathy failing conservative care, ACDF is the default surgical option because of what this paper demonstrated: complete decompression of both soft-disc and bony pathology, 94% fusion rate, short hospitalization, and early return to function.
The key intraoperative boundary is the posterior longitudinal ligament. Cloward's one serious complication arose from violating it, causing intraspinal hemorrhage. Treat it as the last layer between your curette and the dura.
Cloward's cylindrical dowel and Smith-Robinson's tricortical strut graft (published simultaneously in 1958) both established ACDF but differ in graft geometry — a distinction that drove decades of debate and directly preceded modern cage design.