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
-
Recent studies describe significant rates of heterotopic ossification (HO) after cervical total disc replacement (CTDR). Little is known about the reasons, and one aspect that requires further in vivo investigation is the biomechanical alteration after CTDR and the role of the implant-related centre of rotation (CORi) in particular. The role of the sagittal position of the CORi on functional outcome in two versions of a semi-constrained disc prosthesis with sagittally different CORi is the topic of this study. ⋯ Our results confirm the influence of CORi location on segmental alignment, kinematics and HO for a semi-constrained CTDR, but it also indicates a multifactorial process.
-
We present a case with spinal myolipoma that was unique in its anatomical composition and symptomatology. ⋯ We posit that his buttock pain, exacerbated by standing on tiptoe, was due to traction of the conus by contraction of the ectopic muscle that was aberrantly innervated from the sacral spinal roots.
-
Case Reports
Reconstruction using a frozen tumor-bearing vertebra in total en bloc spondylectomy can enhance antitumor immunity.
Distant metastases from thyroid carcinoma are successfully cured if they take up radioiodine ((131)I), are of small size, and located in the lungs. Bone metastases have the worst prognosis because (131)I therapy and external beam radiotherapy are less effective. Our propose here is to report a patient with solitary spinal metastasis and multiple lung metastases from thyroid carcinoma, whose spinal metastasis was treated by total en bloc spondylectomy (TES) enhancing antitumor immunity using frozen tumor-bearing bone for spinal reconstruction. ⋯ TES with cryotreatment as presented is a novel surgery which can enhance antitumor immunity against other visible or non-visible metastases.
-
Surgeon spine angle during surgery was studied ergonomically and the kinematics of the surgeon's spine was related with musculoskeletal fatigue and pain. Spine angles varied depending on operation table height and visualization method, and in a previous paper we showed that the use of a loupe and a table height at the midpoint between the umbilicus and the sternum are optimal for reducing musculoskeletal loading. However, no studies have previously included a microscope as a possible visualization method. The objective of this study is to assess differences in surgeon spine angles depending on operating table height and visualization method, including microscope. ⋯ This study suggests that the use of a microscope and a table height above the umbilicus are optimal for reducing surgeon musculoskeletal fatigue.
-
Synovial sarcomas of the spine are very rare, most rare of which was occurring in the thoracic vertebral body. The diagnosis of synovial sarcomas was very difficult. It depends on the radiological examination, immunohistochemical examination and gene examination. The best treatment to them was completely surgical resection with negative margins. Other treatments such as radiation therapy and chemotherapy were just adjuvant. The prognosis of synovial sarcomas was disappointing. ⋯ Primary vertebral body synovial sarcoma is very rare and difficult to diagnose and treat.