All-Inside Arthroscopic Anatomic Anterior Talofibular Ligament Repair for Chronic Lateral Ankle Instability and Injury at the Talar Attachment: Surgical Technique.

Recently, arthroscopic anterior talofibular ligament (ATFL) repair has become popular, and favorable outcomes have been reported. In general, ATFL injuries are often caused by fibular attachment, and there are no reports of arthroscopic ligament repair of talar attachment injuries. We present a surgical technique for arthroscopic ligament repair via the anterolateral portal, accessory anterolateral portal, and far accessory anterolateral portal for ATFL injuries on the talar side.

Establishment and characterization of the novel myxofibrosarcoma cell line, SMU-MFS.

Myxofibrosarcoma (MFS) is one of the most common soft-tissue sarcomas in elderly patients. Owing to the limited efficacy of chemotherapy and radiotherapy, complete resection is the only available curative treatment. Therefore, developing novel therapies for MFS is important to improve clinical outcomes.

Secondary Osteosarcoma After Carbon-Ion Radiotherapy for Desmoid-Type Fibromatosis: A Case Report.

Background: Radiotherapy is considered an alternative treatment for unresectable or pharmacologically resistant desmoid-type fibromatosis. While it results in relatively good local control, the risk of secondary malignancy remains a concern.

Case: We present a case of secondary osteosarcoma after carbon-ion radiation therapy (CIRT).

Wrapping method for better fat handling in endoscopic trans-sphenoidal surgery.

Background: Fat is commonly used for preventing cerebrospinal fluid (CSF) leakage during endoscopic transsphenoidal surgery (ETSS). However, fat is soft, slippery, and sometimes not easy to handle. The present study aimed to examine the efficacy of our Surgicel wrapping method, which allows for better fat handling, in preventing the occurrence of CSF leakage among patients undergoing ETSS.

Safe, simple, and valid position for obtaining flexion-extension radiographs to assess instability in patients with lumbar spondylolisthesis: one specific instruction can make a difference.

Objective: In lumbar spondylolisthesis, conventional standing flexion-extension radiography can yield varying results depending on the patient's effort and cooperation. Previous research suggested that assisted flexion radiography provides larger flexion with a significantly greater change in lumbar lordosis (ΔLL) and increased sagittal translation (ST), posterior opening (PO), segmental angulation (SA), and instability detection rates. In this study, the authors aimed to identify a safe, simple, and valid position for obtaining functional radiographs to evaluate abnormal instability in lumbar spondylolisthesis.

Fluorodeoxyglucose Positron Emission Tomography Evaluation of Chronic Recurrent Multifocal Osteomyelitis.

Chronic recurrent multifocal osteomyelitis (CRMO) is an autoinflammatory bone disease that predominantly affects children and adolescents. Currently, CRMO diagnoses are based on a combination of clinical, radiological, pathological, and longitudinal findings. However, distinguishing CRMO from malignant bone tumors using imaging is occasionally challenging.

Treating Extensive Spontaneous Osteonecrosis of the Tibia by the Medial Opening Wedge High Tibial Osteotomy Procedure: A Case Report.

Osteonecrosis of the tibia is less common than that of the femoral condyle, with no consensus on surgical indications. In this study, a medial opening wedge high tibial osteotomy (OWHTO) was performed to treat the very extensive osteonecrosis of the tibia. This case demonstrates significant symptomatic relief and functional improvement following OWHTO for spontaneous tibial plateau osteonecrosis.

A Novel Technique for Restricted Kinematic Alignment Total Knee Arthroplasty Without Computer-Assisted Devices.

Kinematic-alignment total knee arthroplasty (KA-TKA) aims to restore natural limb alignment and joint line obliquity, thereby improving patient satisfaction. Restricted KA-TKA (rKA-TKA) addresses abnormal knee anatomies and seeks to replicate natural anatomical structures within safe alignment boundaries. This study introduces a novel device and technique that enables rKA-TKA without computer-assisted surgery (CAS).

Temporal changes in tibiofemoral relationship following anterior cruciate ligament injury: Implications for rotational dynamics and clinical outcomes.

Purpose: This study aims to elucidate changes in the tibiofemoral relationship over time following anterior cruciate ligament (ACL) injury, and investigate the correlation between the tibiofemoral relationship and patient-related outcome measures (PROMs).

Methods: Overall, 203 primary ACL reconstructions were performed using autologous hamstring grafts. Medial and lateral anterior tibial translation (ATT) in the sagittal plane and tibial tubercle-trochlear groove (TT-TG) distance in the axial plane were measured using pre-operative magnetic resonance imaging and post-operative computed tomography.

Win ratio analysis of short-term clinical outcomes of focal therapy and robot-assisted radical prostatectomy for the patients with localized prostate cancer.

We compared the comprehensive clinical outcomes of focal therapy (FT) and robot-assisted radical prostatectomy (RARP) in patients with localized prostate cancer (PC) using a win ratio analysis. After propensity score matching, a win ratio analysis, in which the composite endpoints of failure-free survival (FFS) and the urinary domain of the Expanded Prostate Cancer Index Composite (EPIC) were analyzed, was used for the comparison of the clinical outcomes of FT and RARP for the patients with localized PC. Seventy-two patients were included in each group after propensity score matching.

Effects of a newly developed toe exercise program combined with the intrinsic and extrinsic muscle trainings on toe function: a case series.

Background: Foot and toe function is important for not only sports performance but also preventing and treating musculoskeletal disorders. Although strengthening training specific to intrinsic and extrinsic muscles has been recommended, insufficient information is available in toe exercises in their variation and evidences compared to shoulder or lumbopelvic training strategies. The aim was to examine the effects of a newly developed foot muscle exercise program on toe function in individuals during the growth period.

High-intensity interval training using electrical stimulation ameliorates muscle fatigue in chronic kidney disease-related cachexia by restoring mitochondrial respiratory dysfunction.

Background: Exercise, especially high-intensity interval training (HIIT), can increase mitochondrial respiratory capacity and enhance muscular endurance, but its systemic burden makes it difficult to safely and continuously prescribe for patients with chronic kidney disease (CKD)-related cachexia who are in poor general condition. In this study, we examined whether HIIT using electrical stimulation (ES), which does not require whole-body exercise, improves muscle endurance in the skeletal muscle of 5/6 nephrectomized rats, a widely used animal model for CKD-related cachexia.

Methods: Male Wistar rats (10 weeks old) were randomly assigned to a group of sham-operated (Sham) rats and a group of 5/6 nephrectomy (Nx) rats.

High Tibial Osteotomy Alone Does Not Decrease Medial Meniscus Extrusion in the Setting of Medial Meniscus Posterior Root Tear: A Cadaveric Study.

Purpose: To investigate whether inducing valgus alignment and shifting the load laterally through high tibial osteotomy (HTO) alone decreases the extent of medial meniscus extrusion (MME) in the setting of medial meniscus posterior root tear (MMPRT) using ultrasound evaluation.

Methods: Eight fresh-frozen human cadaveric knee specimens were tested using a 6-degree-of-freedom robotic testing system and ultrasound. Each specimen was tested in 5 conditions: (1) intact, (2) MMPRT, (3) medial meniscus repair (MMR), (4) combined medial open-wedge HTO + MMR, and (5) HTO + MMPRT.

Influence of different standing positions on anatomical parameters of coronal whole-leg weight-bearing radiographs in preoperative planning for high tibial osteotomy.

Purpose: The purpose of this study was to assess the differences in lower limb global alignment and anatomical parameters of coronal whole-leg radiographs, which were generally used in preoperative planning for high tibial osteotomy (HTO), according to different weight-bearing standing positions.

Methods: Between April 2021 and December 2022, 176 patients (60 males and 116 females) were investigated. Full-weight-bearing coronal whole-leg radiographs were obtained with the patella centred on the femoral condyle.

Lumbar Spondylolysis in Ambulant Children with Spastic Cerebral Palsy.

Objectives: Lumbar spondylolysis is a common condition; nonetheless, its cause in patients with spastic cerebral palsy (CP) remains unknown. Furthermore, examination of children with CP may not accurately capture complaints, thus causing diseases to be overlooked. Understanding the clinical features and gait patterns of lumbar spondylolysis in CP can aid in diagnosis.

The Accuracy of Cup Placement in Total Hip Arthroplasty (THA) Using an Augmented Reality-Based Navigation System.

Background AR HIP Navigation System (AR-navi; Zimmer-Biomet, Warsaw, IN) is a portable navigation system employing augmented reality via a smartphone app, which was developed in Japan. We retrospectively analyzed the accuracy of cup placement in total hip arthroplasty (THA) using AR-navi, to investigate whether obesity is associated with an absolute value error in cup placement angle. Methods We retrospectively analyzed 45 hips in 43 patients who underwent THA using AR-navi (AR-navi group) and compared them with 45 hips in 45 patients who underwent THA using alignment rods (conventional group).

Squamous cell carcinoma initially occurring on the tongue dorsum: a case series report with molecular analysis.

Background: Squamous cell carcinoma (SCC) of the dorsum of the tongue is extremely rare, and it clinically resembles various benign lesions. Somatic mutations in TP53 and some driver genes were implicated in the development of SCC; however, the somatic genetic characteristics of dorsal tongue SCC remain unknown. With a detailed analysis of gene mutations in dorsal tongue SCC, we aimed to better understand its biology.