Publications by authors named "Natsumi Saka"

Background: In vitro, animal, and clinical comparative studies have revealed that combinations of rifampicin with antibacterial agents are effective in the treatment of biofilm-associated infections. This study aimed to assess the effectiveness of rifampicin combination therapies compared with monotherapies without rifampicin in patients with orthopaedic implant-related infections.

Materials And Methods: The clinical literature was comprehensively searched for studies assessing the effectiveness of rifampicin combination therapy in patients with orthopaedic implant-related infection.

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Article Synopsis
  • - The study aimed to compare the clinical outcomes of patients treated by female surgeons versus male surgeons, specifically looking at factors like postoperative mortality, readmission, and complication rates.
  • - A total of 15 studies involving over 5 million patients showed that those treated by female surgeons had a significantly lower postoperative mortality rate, especially in elective surgeries, though results for readmission and complication rates were inconclusive.
  • - The findings suggest that patients may benefit from being treated by female surgeons in terms of lower mortality rates, although more research is needed to clarify other outcome factors.
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The induced membrane technique (IMT) is among the most innovative reconstructive methods for clavicle defects after fracture-related infection (FRI). Herein, we report a case in which a clavicle bone defect after FRI was reconstructed with an autogenous cancellous bone graft mixed with β-tricalcium phosphate (β-TCP) in the second stage of the IMT. A 62-year-old male patient with left clavicle fracture underwent open reduction and internal fixation.

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Background: Women are underrepresented in orthopaedic surgery, especially in Japan. Authorship is associated with representation and career advancement, but the academic representation of women in Japanese orthopaedic surgery has not been elucidated. This study aimed to elucidate the proportion of female first authorship and its associating factors, as well as trends in the Journal of Orthopaedic Science (JOS), the official journal of the Japanese Orthopaedic Association.

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Our meta-epidemiological study aimed to describe the prevalence of reporting effect modification only on relative scale outcomes and inappropriate interpretations of the coefficient of interaction terms in nonlinear models on categorical outcomes. Our study targeted articles published in the top 10 high-impact-factor journals between 1 January and 31 December 2021. We included two-arm, parallel-group, interventional superiority randomized controlled trials to evaluate the effects of modifications on categorical outcomes.

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Introduction: There is no consensus regarding the range of immobilization in the conservative treatment of distal radius fractures (DRFs). Therefore, this systematic review and meta-analysis aimed to compare the clinical outcome of patients with DRFs treated conservatively with below- or above-elbow immobilization.

Materials And Methods: Following the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) guidelines, two independent reviewers searched MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, Clinicaltrials.

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Several treatment methods for nonunion of humeral fracture have been reported with satisfactory results. However, treatment of a long-standing nonunion of the humerus is more challenging, as it may be complicated by broken implants and bone defects. Little is known about treatment strategies for long-standing humeral nonunion with bone defects, especially in the metaphyseal area.

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Article Synopsis
  • The study aimed to evaluate the effectiveness of the induced membrane technique (IMT) using beta-tricalcium phosphate (β-TCP) for reconstructing segmental bone defects, focusing on clinical and radiological outcomes as well as the impact of defect size and site.
  • Researchers reviewed medical records of 35 lower limbs treated with IMT, measuring functional outcomes via the Lower Extremity Functional Score (LEFS) and assessing bone healing through radiological imaging over a follow-up period.
  • Results indicated significant improvements in LEFS from preoperative to final follow-up, complete bone healing in all cases, and no significant differences in healing time or outcomes based on defect size or surgical site, highlighting the technique's overall effectiveness.
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This study aimed to clarify the bone and soft tissue morphological features at the volar ulnar corner of the radius. Micro-computed tomography, macroscopic and histological analyses were conducted using 12 cadaveric wrists, and in vivo MRI studies of the wrist were evaluated in five healthy volunteers. The volar ulnar corner of the distal radius has a protrusion volar to the sigmoid notch.

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We report a case of volar fourth and fifth carpometacarpal (CMC) joint dislocation complicated by a hamate hook fracture. The CMC joint was reduced in a closed fashion and temporally fixed with Kirschner wires. Using intraoperative computed tomography, the displaced fracture of the hamate hook was reduced by open reduction and internal fixation and fixed with a screw.

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We aimed to clarify the prevalence of polypharmacy among elderly individuals in Japan. We used the data obtained from a large-scale population-based representative database of health insurance claims in a single prefecture in Japan. We examined all of the outpatient and pharmaceutical health insurance claims for National Health Insurance and those for Late-stage Elderly Health Insurance in Nagasaki Prefecture, Japan between April and June 2016.

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Comminuted distal femur fracture is a challenging injury, and care must be taken to reduce the articular fragment and acquire the sufficient stability for the metaphyseal comminution. We report the case of a AO/OTA C3-type distal femur fracture with articular malunion and metaphyseal nonunion. Articular malunion was treated with corrective osteotomy using a 3D-printed model for planning, and metaphyseal nonunion was treated with an induced membrane technique.

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Introduction: This study aimed to clarify the coding and prescription rates for osteoporosis in distal radius fracture patients and to investigate the associated factors to help prevent subsequent osteoporotic fracture.

Materials And Methods: Between 2014-2015, among 294,374 eligible individuals (42% female) aged 50-75 years in a health insurance claims database, we identified 192 individuals (mean age: 59.8 years, 74% female), counted the coding of distal radius fracture (International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10) code: S525, S526), and determined if the patient had been assigned the code for osteoporosis and been prescribed osteoporosis medications.

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Introduction: There is a growing need for chondrocyte implantation for reconstructing cartilage defect. However, ossification of the implanted cartilage is a challenging problem. Implant-type tissue-engineered cartilage from human auricular chondrocytes is a three-dimensional implant type cartilage using PLLA as a scaffold for chondrocytes.

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