European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society
-
Case Reports
Minimally invasive lumbopelvic instrumentation for traumatic sacrolisthesis in an elderly patient.
We present a novel minimally invasive technique for lumbopelvic instrumentation in selected elderly patients suffering from traumatic sacrolisthesis. An 82-year-old female suffered from sacrolisthesis after a fall. She developed significant low back pain and bilateral lower extremity radiculopathy. Preoperative radiographs and magnetic resonance imaging sequences demonstrated the fracture dislocation between S1 and S2 with compromise of the spinal canal. Lumbopelvic instrumentation was sought to offer fixation and allow mobilization; however, open lumbopelvic instrumentation techniques have significant morbidity, especially in this patient population of elderly patients with medical comorbidities. ⋯ The patient tolerated the procedure well without any complications or morbidity. At the last follow-up of 14 months, she was ambulating without assistance with near total resolution of back pain and radicular pain. Radiographs obtained at 8 months' follow-up demonstrated fusion across the fracture line. Although further follow-up data is still needed to establish the durability of this technique in the long-term, this minimally invasive technique for lumbopelvic instrumentation can be considered as an option in elderly patients with traumatic sacrolisthesis, whose need for early mobilization and medical comorbidities preclude the use of an open lumbopelvic fixation procedure.
-
With regard to the literature, several factors are considered to have an impact on postoperative mobility after lumbar total disc replacement (TDR). As TDR results in a distraction of the ligamentous structures, theoretically the postoperatively disc height and ligamentous integrity have also an influence on biomechanics of a treated segment. The purpose of the study was to evaluate the influence of posterior longitudinal ligament (PLL) resection and segmental distraction on range of motion (ROM). ⋯ But it still remains unclear if this increase which is in median not more than 1° may alter the clinical results. Moreover, the destabilizing effect of PLL resection can be reversed using a higher implant. The prosthesis height seems more crucial than PLL preservation to maintain the primary stability after TDR.
-
Laboratory wear simulations of the dual-bearing surface Charité total disc replacement (TDR) are complicated by the non-specificity of the device's center of rotation (CoR). Previous studies have suggested that articulation of the Charité preferentially occurs at the superior-bearing surface, although it is not clear how sensitive this phenomenon is to lubrication conditions or CoR location. ⋯ Articulation and wear were biased significantly to the superior-bearing surface, even in the presence of significant perturbations of loading and friction. The computational wear model provides novel insight into the mechanics and wear of the Charité TDR, allowing for better interpretation of in vivo results, and giving useful insight for designing future laboratory physical tests.
-
Posterior migration of spinal cord is a common complication of posterior cervical decompression, whereas anterior migration of spinal cord after anterior cervical decompression has not been reported previously. This report presents a case of anterior migration of spinal cord after cervical corpectomy. A 65-year-old male underwent a cervical corpectomy of the C4 and C5 for cervical spondylotic myelopathy. ⋯ However, at 12 months postoperatively, the patient complained that improved gait aggravated again, and the MRI showed an anterior migration of the spinal cord at the level of the C4 and C5, and a compression of spinal cord at the level of caudal endplate of C3. Secondary surgery, laminaplasty of C3 and C4 was conducted. The postoperative MRI showed that the spinal canal increased at the C3 and C4 levels, and the spinal cord went through smoothly without sharp turning.
-
To present a rare case of multiple compressive thoracic intradural cysts with pathologic arachnoid ossification, review the literature and present the surgical options. Few reports have identified the existence of arachnoid calcifications and intrathecal cysts causing progressive myelopathy. The literature regarding each of these pathologies is limited to case reports. Their clinical significance is not well studied, although known to cause neurologic sequelae. ⋯ On last examination, the patient's neurologic status had not improved, but had stabilized. The rate of neurologic improvement from excision and decompression is variable, but it may still be warranted in the face of progressive neurologic deficits.