scholarly journals Safety and Efficacy of All-In-One Percutaneous Pedicle Screw System

2021 ◽  
pp. 219256822110114
Author(s):  
Atsushi Kojima ◽  
Takato Aihara ◽  
Makoto Urushibara ◽  
Kenji Hatakeyama ◽  
Tomonori Sodeyama
Keyword(s):  
Pedicle Screw ◽  
Conventional Method ◽  
Surgical Time ◽  
Computed Tomography Images ◽  
Spine Stabilization ◽  
Percutaneous Pedicle Screw ◽  
Minimally Invasive Spine ◽  
Conventional Methods ◽  
Speed And Accuracy ◽  
Minimally Invasive Spine Stabilization

Study Design: Retrospective study of the prospectively collected outcomes data. Objective: The indications for PPS placement during minimally invasive spine stabilization (MISt) procedures have increased in recent years. To the best of our knowledge, no studies have documented the outcomes of PPS insertion using the all-in-one PPS system. This study compared the conventional methods and the use of all-in-one percutaneous pedicle screw (PPS) system with respect to the speed and accuracy of PPS placement. We also determined the advantages associated with the use of the all-in-one PPS system. Methods: We evaluated 54 patients who underwent PPS insertion using the conventional method and the all-in-one PPS system during MISt procedures. We also assessed the number of implanted PPSs, the time taken to implant PPSs, and the accuracy of PPS placement based on postoperative computed tomography images. Results: A total of 254 PPSs were inserted (126 using the conventional method and 128 using the all-in-one PPS system). The PPS insertion time with the all-in-one PPS system (mean, 25.3 ± 9.1 s) was significantly shorter than that using the conventional method (mean, 63.1 ± 13.0 s; P < 0.01). With respect to the accuracy of PPS insertion, ≥ 2 mm pedicle breach was noted in one case each in both groups. Conclusions: PPS placement using the all-in-one PPS system is as safe as conventional methods and has the potential to save the surgical time of MISt procedures.

scholarly journals Application of a novel customized guide template in percutaneous pedicle screw placement: an in vitro study

10.29007/qzxg ◽  
2018 ◽  
Author(s):  
Su-Hua Wu ◽  
Guo Zheng ◽  
Jian-Hua Chen ◽  
Sheng-Hai Wang
Keyword(s):  
Pedicle Screw ◽  
Average Distance ◽  
Pedicle Screws ◽  
Screw Placement ◽  
Patient Specific ◽  
Pedicle Screw Placement ◽  
Intraoperative Radiation ◽  
Spine Stabilization ◽  
Percutaneous Pedicle Screw

In open surgery for spine stabilization, the pedicle screws are often placed using patient-specific guide templates since they can improve the screw placement accuracy and simplify surgery. However, the conventional fit-and-lock template requires full exposure of the bony structures and is therefore not suitable for minimally invasive procedures. In this study, we constructed a novel guide template for percutaneous pedicle screw placement. Its feasibility and the accuracy of template-assisted pedicle screw placement were assessed using an excised calf spine model. As a result, all inserted guide wires and 27 of 30 simulated screws (90%) were completely in the pedicle. The remaining screws (10%) penetrated by less than 2 mm. The average distance and angular deviations of the guide wires were 1.46±0.60 mm and 1.10±0.84°. Our study demonstrate that this novel guide template is technically feasible and enhances the accuracy of percutaneous pedicle screw placement. Moreover, it may simplify the surgery and minimize intraoperative radiation. Further research on its clinical applications is warranted.

scholarly journals Impairment-driven cancer rehabilitation in patients with neoplastic spinal cord compression using minimally invasive spine stabilization: A single-center retrospective study

2020 ◽  
Author(s):  
Yukako Ishida ◽  
Hideki Shigematsu ◽  
Shinji Tsukamoto ◽  
Yasuhiko Morimoto ◽  
Eiichiro Iwata ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Minimally Invasive ◽  
Cancer Patients ◽  
Spinal Cord Compression ◽  
Cord Compression ◽  
Neurological Deficits ◽  
Tumor Board ◽  
Spine Stabilization ◽  
Minimally Invasive Spine ◽  
Minimally Invasive Spine Stabilization

Abstract Background: Neoplastic spinal cord compression is a cause of severe disability in cancer patients. To prevent irreversible paraplegia, a structured strategy is required to address the various impairments present in cancer patients. Methods: We retrospectively reviewed 27 consecutive patients with neoplastic spinal compression who were treated with minimally invasive spine stabilization (MISt). We classified the impairments of patients through our multidisciplinary tumor board based on spine-specific factors, skeletal instability and tumor growth. The neurological deficits, ambulation status, progress of pathological fracture, incidence of vertebral collapse, postoperative implant failure were examined. Changes of the Barthel index (BI) scores before and after surgery were investigated throughout the clinical courses. Results: The average duration to ambulation was 7.19±11 days, and we observed no collapse or progression of paralysis except in four cases of complete motor paraplegia before the surgery. We noted good functional prognosis in patients capable of ambulation within seven days and in patients who could survive longer than three months after the surgery. Conclusions: In various cancer patients with neoplastic spinal cord compression, skeletal instability as the primary impairment is a good indication for MISt, as the patients showed early ambulation with improved BI scores.

Clinical Results of Minimally Invasive Spine Stabilization for Spinal Metastases

Orthopedics ◽  
2017 ◽  
Vol 40 (4) ◽  
pp. e693-e698 ◽  
Author(s):  
Hiroshi Uei ◽  
Yasuaki Tokuhashi ◽  
Masashi Oshima ◽  
Masafumi Maseda ◽  
Koji Matsumoto ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Spinal Metastases ◽  
Clinical Results ◽  
Spine Stabilization ◽  
Minimally Invasive Spine ◽  
Minimally Invasive Spine Stabilization

scholarly journals Impairment-driven cancer rehabilitation in patients with neoplastic spinal cord compression using minimally invasive spine stabilization

2020 ◽  
Author(s):  
Yukako Ishida ◽  
Hideki Shigematsu ◽  
Shinji Tsukamoto ◽  
Yasuhiko Morimoto ◽  
Eiichiro Iwata ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Minimally Invasive ◽  
Cancer Patients ◽  
Spinal Cord Compression ◽  
Cord Compression ◽  
Tumor Board ◽  
Spine Stabilization ◽  
Before And After ◽  
Minimally Invasive Spine ◽  
Minimally Invasive Spine Stabilization

Abstract Background: Neoplastic spinal cord compression is a cause of severe disability in cancer patients. To prevent irreversible paraplegia, a structured strategy is required to address the various impairments present in cancer patients. In this study, we aimed to identify the status where rehabilitation with minimally invasive spine stabilization (MISt) effectively improves ADL.Methods: We retrospectively reviewed 27 consecutive patients with neoplastic spinal compression who were treated with MISt. We classified the impairments of patients through our multidisciplinary tumor board based on spine-specific factors, skeletal instability and tumor growth. The neurological deficits, progress of pathological fracture, incidence of vertebral collapse, postoperative implant failure were examined. Changes of the Barthel index (BI) scores before and after surgery were investigated throughout the clinical courses.Results: The average duration to ambulation was 7.19±11 days, and we observed no collapse or progression of paralysis except in four cases of complete motor paraplegia before the surgery. Neurological deficiency was improved to or maintained at Frankel’s grade E in 16 patients, remained unchanged in 6 patients (in grades B, C, D), and worsened in 5 patients. BI score comparisons before and after surgery in all patients showed statistically significant increments (p < 0.05). On further analysis, we noted good functional prognosis in patients capable of ambulation within seven days (p < 0.05) and in patients who could survive longer than three months after the surgery (p < 0.05).Conclusions: In various cancer patients with neoplastic spinal cord compression, skeletal instability as the primary impairment is a good indication for MISt, as the patients showed early ambulation with improved BI scores.

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