Aims. Surgical approaches to cervical ossification of the posterior longitudinal ligament (OPLL) remain controversial. The purpose of the present study was to analyze and compare the long-term neurological recovery following anterior decompression with fusion (ADF) and posterior laminectomy and fusion with bone graft and internal fixation (PLF) based on > ten-year follow-up outcomes in a single centre. Methods. Included in this retrospective cohort study were 48 patients (12 females; mean age 55.79 years (SD 8.94)) who were diagnosed with cervical OPLL, received treatment in our centre, and were followed up for 10.22 to 15.25 years. Of them, 24 patients (six females; mean age 52.88 years (SD 8.79)) received ADF, and the other 24 patients (five females; mean age 56.25 years (SD 9.44)) received PLF. Clinical data including age, sex, and the OPLL canal-occupying ratio were analyzed and compared. The primary outcome was Japanese Orthopaedic Association (JOA) score, and the secondary outcome was visual analogue scale neck pain. Results. Compared with the baseline, neurological function improved significantly after surgery in all patients of both groups (p < 0.001). The JOA recovery rate in the ADF group was significantly higher than that in the PLF group (p < 0.001). There was no significant difference in postoperative cervical pain between the two groups (p = 0.387). The operating time was longer and intraoperative blood loss was greater in the PLF group than the ADF group. More complications were observed in the ADF group than in the PLF group, although the difference was not statistically significant. Conclusion. Long-term neurological function improved significantly after surgery in both groups, with the improvement more pronounced in the ADF group. There was no significant difference in postoperative neck pain between the two groups. The operating time was shorter and intraoperative blood loss was lower in the ADF group; however, the incidence of perioperative complications was higher. Cite this article: Bone Jt Open 2024;5(9):768–775

Summary: Twenty six consecutive patients with CSM were operated between Jan 2001–Dec 2004 with anterior corpectomy and reconstruction using strut graft/ lordotic cage and stabilization ACP. 10/26 were wheel chair bound/bought on stretcher. 16/26 had spastic lower limbs with myelopathic hands. Post operatively 20/26 had good gait improvement and are community ambulators. 3/26 house hold ambulators and 1 died. 18/26 had good improvement in hand function. Introduction: Cervical spondylotic myelopathy is a degenerative disease of old age. Patients present with severe disabiling symptoms of spastic gait/inability to walk and varied involvement in the hand. The degenerative spondylosis being the commonest cause, CSM is also caused by OPLL and soft disc herniation. Methods: 26 consecutive patients who had undergone anterior decompression and reconstruction were evaluated for recovery. The gait pattern, hand functions and return to activities were evaluated pre and postoperatively. No specific scoring system could be used in our studies due to practical reasons. Results: 18/26 patients had CSM, 5/26 had OPLL and 3/26 soft disc herniations. Soft disc herniation were at 2 levels and all underwent discectomy, tricortical bone grafting and stabilization with ACP. Other patients had corpectomy 1 level – 4, 2 levels – 9, 3 levels – 4, 4 levels – 1. OPLL was removed in 4/5 patients. Xx/10 patients who were wheel chair bound preoperatively became ambulatory, 3/10 had decrease in spasm but still could not walk postoperatively. At 1 year follow up 9/10 patients had good gait pattern and 1 was still wheel chair bound. 18/26 had good hand function recovery with improvement in hand writing, 16/26 returned to previous activity, 1 patient expired. Conclusion: Anterior decompression for CSN is an effective surgical option. It not only prevents further detoriation, but also improvement is seen in most of the patients. Significance: Anterior decompression is indicated for all patients with CSM, OPLL and disc herniation as the pathology is anterior based

Ossification of the posterior longitudinal ligament (OPLL) is a condition found predominantly in the oriental population and is rarely seen in non orientals. OPLL can present with cervical canal stenosis and myelopathy (including central cord syndrome), often following minor trauma. Co-existence of OPLL with diffuse idiopathic skeletal hyperostosis (DISH) is a rare condition and very few reports of such patients exist in literature. Here we report the case of a Caucasian with co-existing DISH and OPLL, presenting with acute central cord syndrome associated with fracture of the ossification. A 64 year old Caucasian farmer was transferred to our spinal unit with weakness in the right upper limb following a road traffic accident. On examination he had hyperaesthesia in both upper limbs and motor power of grade 4 in the right upper limb with a distal motor power of grade 3 in the hand. There was no motor deficit in the left upper limb or lower limbs. Radiographs revealed an ossification of the posterior longitudinal ligament with a break at C2 and C3 levels. He also had exuberant soft tissue ossification in the cervical and thoracic spines, suggestive of diffuse idiopathic skeletal hyperostosis (DISH). He recovered completely in 6 weeks with non operative treatment. Fracture of the posterior longitudinal ligament has not been widely reported, although it is possibly more prevalent than is recognised. We report this case in order to highlight the importance of recognising this condition in non oriental populations and to demonstrate that non operative treatment has a good prognosis