The Treatment of Periprosthetic Fracture Revision of the Humerus with "Bamboo Support" Structural Allograft Technique-Atrophic Non-Union of a Post-Operative Periprosthetic Fracture after Reverse Total Shoulder Arthroplasty: A Case Report.

Periprosthetic fractures are a serious complication of joint replacement surgery. With the growing prevalence of reverse total shoulder arthroplasty (RTSA), the incidence of relatively uncommon periprosthetic humeral fractures has increased. Here, we present the unique case of a 74-year-old woman who developed atrophic non-union after plate osteosynthesis for a periprosthetic fracture associated with RTSA.

Association Between the Severity of Periodontitis and Osteoarthritis in Middle-Aged and Older Patients With Type 2 Diabetes Mellitus: A Nationwide Population-Based Study.

Objective: Periodontitis and osteoarthritis are major public health concerns that result in decreased quality of life among middle-aged and older adults. We sought to examine whether the severity of periodontitis is related to osteoarthritis according to the presence of type 2 diabetes mellitus.

Methods: This study included 3,527 participants age ≥50 years from the Korean National Health and Nutrition Examination Survey.

Influence of Orthodontic Anchor Screw Anchorage Method on the Stability of Artificial Bone: An In Vitro Study.

This study aims to compare the torque values for various lengths of the titanium-based orthodontic anchor screw (OAS), different anchorage methods and varying artificial bone densities after predrilling. Furthermore, the effects of these parameters on bone stability are evaluated. A total of 144 OASs were prepared with a diameter of 1.

Association between platelet count and osteoarthritis in women older than 50 years.

Background: Osteoarthritis (OA) is a multifactorial disease involving inflammatory processes. Platelets play important roles in both hemostasis and the inflammatory response; however, the relationship between platelet count and OA is unclear. Our aim was to evaluate the association between platelet count and knee and hip OA in Korean women.

Cluster analysis of nutritional factors associated with low muscle mass index in middle-aged and older adults.

Background & Aims: Sarcopenia, or age-related muscle loss, is an enormous health problem in an aging world because of its many clinical and societal adverse effects. The uncovering of healthy dietary patterns is an important strategy to prevent or delay sarcopenia. We used K-means clustering to identify subgroups of men and women based on nutritional and health-related factors and investigated risk factors for low muscle mass in the subgroups and in the study population as a whole.

The relationship between platelet count and bone mineral density: results from two independent population-based studies.

Unlabelled: In two population-based study of middle-aged and older people, we investigated if platelet count was associated with bone mineral density and determined whether the association remained over time. Highest platelet counts within the normal range are significantly associated with osteopenia and osteoporosis in middle-aged and elderly people.

Purpose: Recently, platelets were found to play a role in bone remodeling.

Arthroscopic treatment of a one-fourth anteroinferior glenoid comminuted fracture-dislocation with concomitant three-part complex proximal humerus fracture in a middle-aged man: a case report.

Introduction: Proximal humeral fracture-dislocations can occur in high-energy traumas. This injury can be accompanied by a glenoid fracture; however, it is a rare type of complex injury in patients aged under 60 years.

Materials And Methods: A 53-year-old man presented with a three-part fracture-dislocation of the proximal humerus and a severely comminuted glenoid fracture.

Knee osteoarthritis and its association with mental health and health-related quality of life: A nationwide cross-sectional study.

Aim: To investigate the relationship between knee osteoarthritis, mental health and health-related quality of life (QoL).

Methods: This study included 6343 men and women aged ≥50 years from the Korean National Health and Nutrition Examination Survey. Osteoarthritis was defined as Kellgren-Lawrence grade ≥2 in the knee on radiographic images with knee pain.

Hemoglobin levels and low bone mineral density in non-anemic older adults: Secondary analysis of the Korean National Health and Nutrition Examination Survey.

Background: Although, previous studies have reported a positive association between hemoglobin levels and bone mineral density (BMD), the majority of the studies were limited in patients with chronic hypoxemic conditions and findings concerning the association among non-anemic populations are inconclusive. We aimed to examine the association between hemoglobin levels and BMD in non-anemic healthy adults.

Methods: This cross-sectional study included 3626 non-anemic men and women aged ≥ 60 years who participated in the Korean National Health and Nutrition Examination Survey (KNHANES).

Arthroscopic gel-type autologous chondrocyte implantation presents histologic evidence of regenerating hyaline-like cartilage in the knee with articular cartilage defect.

Purpose: To investigate the clinical, radiological, and histological results of arthroscopic gel-type autologous chondrocyte implantation (GACI) in treating chondral defects of the knee.

Methods: This study prospectively examined five males and five females with a mean age of 40.3 ± 10.

Relationship between Sleep Duration and Osteoarthritis in Middle-Aged and Older Women: A Nationwide Population-Based Study.

(1) Background: Both long and short sleep durations have been associated with negative health outcomes, particularly in middle-aged and older adults. To date, there has been little research on the association between sleep and osteoarthritis. This study aimed to evaluate the relationship between sleep duration and radiographically confirmed osteoarthritis in middle-aged and older women.

Three-Dimensional Fast Spin-Echo Imaging without Fat Suppression of the Knee: Diagnostic Accuracy Comparison to Fat-Suppressed Imaging on 1.5T MRI.

Purpose: To evaluate the diagnostic performance of three-dimensional fast spin-echo (3D FSE-Cube) without fat suppression (NFS) for detecting knee lesions, using comparison to 3D FSE-Cube with fat suppression (FS).

Materials And Methods: One hundred twenty-four patients who underwent 1.5T knee magnetic resonance imaging (MRI) scans and 25 subsequent arthroscopic surgeries were retrospectively reviewed.

Osteosynthesis of symptomatic nonunions of type II fractures of the distal clavicle using modified locking T-plate and bone grafting.

Background: Type II distal clavicle fractures are generally unstable and hence prone to nonunion because of their specific biomechanical configuration. Nonunion of type II distal clavicle fractures sometimes poses a difficult problem causing pain and functional impairment of the shoulder girdle and upper limb. Therefore, operative treatment should be performed for symptomatic nonunions.

A biomechanical comparison of 3 reconstruction techniques for posterolateral instability of the knee in a cadaveric model.

Purpose: The objective of this study was to compare the varus and external rotatory laxity of reconstructed knees by use of 3 different reconstruction techniques that address posterolateral instability of the knee: popliteus tendon (PT) and lateral collateral ligament (LCL) reconstruction, PT and popliteofibular ligament (PFL) reconstruction, and PFL and LCL reconstruction.

Methods: We divided 36 fresh-frozen cadaveric knees into 3 groups of 12, and each group was assigned to a reconstruction technique: PT-LCL reconstruction with the posterior tibialis tendon, PT-PFL reconstruction with the patellar tendon and bone (Warren technique), and PFL-LCL reconstruction with the semitendinosus tendon (Larson technique). Each specimen was fixed with an Ilizarov external fixator and mounted on a custom-designed apparatus that was made to measure posterolateral instability of the knee, that is, external rotatory and varus laxity in the intact state, after cutting, and in the postoperative state at every 30 degrees from 0 degrees to 90 degrees .

Evaluation of the mechanical properties of posterolateral structures and supporting posterolateral instability of the knee.

The objectives of this study are to evaluate the contributions of the popliteofibular ligament (PFL), the popliteus tendon (PT), and the lateral (fibular) collateral ligament (LCL) to the posterolateral stability of the knee by changing the sequence of selective transection. Twelve fresh-frozen cadaveric knees were divided into two groups. Group 1 has a cutting sequence as follows: PFL, PT, LCL.

Arthroscopic posterior cruciate ligament tibial inlay reconstruction.

Tibial inlay posterior cruciate ligament (PCL) reconstruction was developed to avoid "killer turn" of the tibial tunnel. It requires a surgical dissection to popliteal fossa and changing of the patient's position during operation. We report an arthroscopic tibial inlay PCL reconstruction technique to avoid morbidity from an open procedure.

Surgical treatment of malignant and aggressive bone tumors around the knee by segmental resection and rotationplasty.

In patients having malignant or aggressive bone tumors around the knee joint and requiring amputation, segmental resection and rotationplasty was performed and the clinical results were analyzed. Twenty-six patients underwent segmental resection and rotationplasty between February 1988 and June 1994. The mean follow-up period was 57 (6 - 120) months and the average age of patients was 21.