Publications by authors named "Eiji Kondo"

Background: Several procedures for combined rupture of both anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) in multiple-ligament knee injuries (MLKIs) have been reported. However, the clinical outcome of these treatments remains controversial.

Hypothesis: Postoperative knee stability and clinical outcomes in patients who underwent simultaneous bicruciate reconstruction would be comparable with those that underwent bicruciate reconstruction with collateral ligament surgery.

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In high tibial osteotomy (HTO) fixed with a locking compression plate (LCP), overcorrection or under-correction of knee alignment frequently occurs because the LCP applies not only proximal displacement but also valgus rotation to the distal tibia. We have developed a quantitative technique to precisely fix the tibia with the LCP at the preoperatively planned correction angle in inverted V-shaped HTO. Preoperatively, simulation of the HTO using the LCP is performed with a radiograph, and the distance of the most proximal locking screw from the articular surface is measured.

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Background: Subchondral bone cysts (SBCs) can significantly impact the outcomes of cartilage repair procedures such as autologous chondrocyte implantation (ACI). However, the etiology and progression of SBCs following ACI remain poorly understood. This case report highlights a progressively enlarging SBC following ACI using all-suture anchors, treated with autologous osteochondral transplantation (AOT).

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Ovarian cancer has a poor prognosis, and screening methods have not been established. Biomarkers based on molecular genetic characteristics must be identified to develop diagnostic and therapeutic strategies for all cancer types, particularly ovarian cancer. The present study aimed to evaluate the usefulness of genetic analysis of cervical and endometrial liquid-based cytology (LBC) specimens for detecting somatic mutations in patients with ovarian cancer.

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Objective: Eosinophilic Otitis Media (EOM) is an intractable disease caused by type 2 inflammation, such as Eosinophilic Chronic Rhinosinusitis (ECRS) and bronchial asthma. Biologics have recently been used to treat ECRS and bronchial asthma. Biologics are not indicated for EOM; however, because approximately 10% of ECRS cases has concomitant EOM, concomitant EOM improvement has been observed when dupilumab is administered for ECRS.

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Background: Soft-tissue sarcomas (STSs) are a diverse group of malignancies challenging to treat when surgery is not an option. The aim of this study was to investigate the survival of non-surgical cases in STSs, and to examine the impact of radiation therapy (RT) on survival within this group of cases.

Methods: Utilizing the SEER database, we conducted a retrospective cohort study of localized extremity non-small round cell sarcoma diagnosed between 2000 and 2019.

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Background: Periprosthetic joint infections (PJIs) following total knee arthroplasty (TKA) are among the most challenging pathologies to manage. Recently, continuous local antibiotic perfusion (CLAP) therapy has been introduced for treating musculoskeletal infections in orthopedics. This study aimed to determine the outcomes and risks of CLAP therapy combined with conventional treatment for PJIs after TKA.

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Objectives: This study aimed to explore whether one-time or periodic measurement of soluble fms-like tyrosine kinase-1 (sFlt-1) and placental growth factor (PlGF) could contribute to the prediction of the remaining pregnancy duration in hypertensive disorders of pregnancy.

Study Design: In this retrospective study, we enrolled pregnant women with singleton pregnancies who were admitted to our hospital due to a new rise in blood pressure at or after 20 weeks of gestation or because of worsening chronic hypertension (CH).

Main Outcome Measures: The concentrations of sFlt-1 and PlGF, as well as the sFlt-1/PlGF ratio, were measured only on admission or on admission and every week until delivery.

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Article Synopsis
  • Orbital apex syndrome (OAS) causes visual loss, double vision, and eye pain due to various underlying conditions, including acute invasive fungal rhinosinusitis (AIFRS).
  • A case study presented a 76-year-old man with OAS linked to AIFRS, who underwent surgery and received antifungal treatment after a failed corticosteroid regimen.
  • The findings highlight the difficulty in differentiating between AIFRS-induced OAS and other forms, emphasizing the importance of conducting a biopsy before corticosteroid treatment to avoid worsening fungal infections and ensure better patient outcomes.
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  • Ethmoidal arteries are vulnerable to injury during endoscopic sinus surgery, prompting this study to investigate their locations in Japanese patients.
  • A review of CT images from 50 patients showed that anterior ethmoidal arteries (AEAs) and posterior ethmoidal arteries (PEAs) were consistently present, with a notable percentage running below the anterior skull base (ASB).
  • The findings suggest that surgeons should exercise caution when operating near AEAs, especially in patients with supraorbital ethmoid cells, to minimize the risk of injury.
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SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily B member 1 (SMARCB1) is a tumor suppressor gene, and SMARCB1 deficits have been associated with numerous malignant tumors. Carcinomas with a SMARCB1 deficit generally have a poor prognosis. In the head and neck region, there have been many recent cases of SMARCB1-deficient sinonasal carcinoma, but reports of extrasinonasal sites are extremely rare.

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Article Synopsis
  • Distal femoral varus osteotomy (DFVO) is a surgical procedure used to correct knee valgus malalignment, but its impact on stress distribution in the knee joint hasn't been thoroughly studied in real-life scenarios.
  • This study aimed to analyze subchondral bone density in non-arthritic knees versus those with valgus malalignment, evaluate changes in bone density after DFVO, and link leg alignment to these changes.
  • Researchers examined data from 14 patients who underwent DFVO for osteoarthritis due to valgus malalignment and compared it with a control group, finding significant differences in bone density distribution before and after the surgery.
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Purpose: Recently, noninvasive preimplantation genetic testing for aneuploidy (niPGT-A) using cell-free deoxyribonucleic acid has been developed; however, there are few reports on this and the results are inconsistent. This study was conducted to optimize the cultural environment.

Methods: We used 35 blastocysts that had been discarded after in-vitro fertilization.

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Objective: To evaluate the long-term efficacy and safety of niraparib in Japanese women with heavily pretreated ovarian cancer.

Methods: This was the follow-up analysis of a phase 2, multicenter, open-label, single-arm study in Japanese women with homologous recombination-deficient, platinum-sensitive, relapsed, high-grade serous epithelial ovarian, fallopian tube, or primary peritoneal cancer who had completed 3-4 lines of chemotherapy and were poly(ADP-ribose) polymerase inhibitor naïve. Participants received niraparib (starting dose, 300 mg) once daily in continuous 28-day cycles until objective disease progression, unacceptable toxicity, or consent withdrawal.

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Background: The integration of artificial intelligence (AI), particularly, in oncology, has significantly shifted the paradigms of medical diagnostics and treatment planning. However, the utility of AI, specifically OpenAI's ChatGPT, in soft tissue sarcoma treatment, remains unclear.

Methods: We evaluated ChatGPT's alignment with the Japanese Orthopaedic Association (JOA) clinical practice guidelines on the management of soft tissue tumors 2020.

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Background: To evaluate the relationship between the pattern and severity of metatarsophalangeal (MTP) joint dislocation in the lesser toes and severity of joint destruction in rheumatoid forefoot deformities.

Methods: Participants comprised of 13 patients (16 feet) who underwent resection arthroplasty of the metatarsal head of the lesser toes for rheumatoid arthritis of the MTP joints. Correlations between preoperative radiographic findings and histological grades second to fifth metatarsal heads taken intraoperatively were analyzed.

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Background: This study aims to evaluate the efficacy of radiation therapy in enhancing survival outcomes among elderly patients diagnosed with localized extremity soft tissue sarcomas (STSs). Furthermore, it seeks to explore whether the survival benefits conferred by radiation therapy differ according to tumor characteristics and treatment modalities.

Methods: We conducted a retrospective analysis using the Surveillance, Epidemiology, and End Results (SEER) database to identify patients aged 80 years and older diagnosed with localized extremity STSs.

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Background: The Sauvé-Kapandji (S-K) method is a surgical procedure performed for chronic deformities of the distal radial ulnar joint (DRUJ). Changes to the joint contact surface from pre- to postoperatively under physiological in vivo conditions have not yet been determined for this useful treatment. The aim of the present study was therefore to compare the articular contact area of the wrist joint between before and after the S-K method for DRUJ disorders.

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The prenatal diagnosis of fetal heart disease potentially influences parental decision-making regarding pregnancy termination. Existing literature indicates that the severity, whether in complexity or lethality, significantly influences parental decisions concerning abortion. However, questions remain as to how fetal heart disease severity impacts parental decisions, given recent advancements in postsurgical outcomes.

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Congenital cytomegalovirus (cCMV) infection poses significant risks to fetal development, particularly affecting the nervous system. This study reports a fetal autopsy case, examining cCMV infection and focusing on CMV DNA measurements in various fetal organs before formalin fixation, a novel approach for comprehensive CMV DNA evaluations in fetal organs affected by cCMV. A 20-week-old male fetus was diagnosed with cCMV following the detection of CMV DNA in ascites obtained via abdominocentesis in utero.

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Article Synopsis
  • The study investigates how high tibial osteotomy (HTO) affects stress distribution in the knee joint, particularly focusing on the medial compartment stress changes.
  • Researchers analyzed 32 knees from 30 patients who underwent the procedure, using CT scans to assess bone density before and after surgery.
  • Findings revealed that while overall stress in the medial compartment decreased post-HTO, there was a specific paradoxical increase in stress in a central area, suggesting the need for careful surgical planning to avoid negative outcomes.
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Background: During the coronavirus disease (COVID-19) pandemic, caesarean section (CS) has been the preferred deliver method for pregnant women with COVID-19 in order to limit the use of hospital beds and prevent morbidity among healthcare workers.

Methods: To evaluate delivery methods used during the COVID-19 pandemic as well as the rates of adverse events and healthcare worker morbidity associated with caesarean deliveries.

Methods: We investigated maternal and neonatal backgrounds, delivery methods, indications and complication rates among pregnant women with COVID-19 from December 2020 to August 2022 in Mie Prefecture, Japan.

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Background: The study examines the characteristics and outcomes of foot-originating malignant bone tumors via Surveillance Epidemiology and End Results (SEER) database analysis.

Methods: A retrospective review of 14,695 malignant bone tumor cases from 2000 to 2019 was conducted.

Results: Of the eligible cases, 147 (2.

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