Can a Total Knee System Providing 1 mm Increment of Polyethylene Insert Thickness Offer a Clinical Benefit?

: The purpose of this study was to compare clinical outcomes and polyethylene (PE) insert thickness between total knee arthroplasty (TKA) systems providing 1 mm and 2 mm increments. : In this randomized controlled trial, 50 patients (100 knees) undergoing same-day or staggered bilateral TKA were randomized to receive a TKA system providing 1 mm increments in one knee (1 mm group) and a TKA system providing 2 mm increments in the other knee (2 mm group). At 2 years postoperatively, Knee Society Score (KSS), Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score, Forgotten Joint Score (FJS), range of motion (ROM), and insert thicknesses were compared between the groups.

Machine Learning for Detecting Total Knee Arthroplasty Implant Loosening on Plain Radiographs.

(1) Background: The purpose of this study was to investigate whether the loosening of total knee arthroplasty (TKA) implants could be detected accurately on plain radiographs using a deep convolution neural network (CNN). (2) Methods: We analyzed data for 100 patients who underwent revision TKA due to prosthetic loosening at a single institution from 2012 to 2020. We extracted 100 patients who underwent primary TKA without loosening through a propensity score, matching for age, gender, body mass index, operation side, and American Society of Anesthesiologists class.

Detection of Prosthetic Loosening in Hip and Knee Arthroplasty Using Machine Learning: A Systematic Review and Meta-Analysis.

: prosthetic loosening after hip and knee arthroplasty is one of the most common causes of joint arthroplasty failure and revision surgery. Diagnosis of prosthetic loosening is a difficult problem and, in many cases, loosening is not clearly diagnosed until accurately confirmed during surgery. The purpose of this study is to conduct a systematic review and meta-analysis to demonstrate the analysis and performance of machine learning in diagnosing prosthetic loosening after total hip arthroplasty (THA) and total knee arthroplasty (TKA).

Central Sensitization Is Associated with Inferior Patient-Reported Outcomes and Increased Osteotomy Site Pain in Patients Undergoing Medial Opening-Wedge High Tibial Osteotomy.

Background and Objectives: Studies have shown that centrally sensitized patients have worse clinical outcomes following total knee arthroplasty (TKA) than non-centrally sensitized patients. It is unclear whether central sensitization (CS) affects patient-reported outcomes (PROs) and/or level of osteotomy site pain in patients undergoing medial opening-wedge high tibial osteotomy (MOWHTO). The purpose of this study was to determine whether CS is associated with PROs and osteotomy site pain following MOWHTO.

Intravenous Tranexamic Acid Has Benefit for Reducing Blood Loss after Open-Wedge High Tibial Osteotomy: A Randomized Controlled Trial.

(1) Background: the purpose of this study was to investigate the efficacy and safety of intravenous (IV) administration of tranexamic acid (TXA) in patients undergoing medial opening wedge high tibial osteotomy (MOWHTO). (2) Methods: a total of 73 patients were randomly allocated into two groups (TXA group and control group). The primary outcome was total perioperative calculated blood loss after MOWHTO.

Infectious Achilles Tendinitis After Local Injection of Human Placental Extracts: A Case Report.

Local injections of corticosteroids or human placental extracts are sometimes used for the treatment of resistant tendinitis or fasciitis. We report a case of infectious Achilles tendinitis complicated by calcaneal osteomyelitis after injection of human placental extracts for the Achilles tendinitis. She was treated with excision of the infected bone and tendon, followed by V-Y lengthening of the proximal portion of the Achilles tendon in a single stage.

Laser-assisted in situ keratomileusis for correction of astigmatism and increasing contact lens tolerance after penetrating keratoplasty.

Purpose: To determine effectiveness of laser-assisted in situ keratomileusis (LASIK) in the treatment of astigmatism following penetrating keratoplasty (PK).

Methods: We performed a retrospective review of medical records of patients who underwent LASIK following PK and had over 1 year of follow-up data.

Results: Twenty-six patients (26 pairs of eyes) underwent LASIK following PK.

Long-term outcomes of penetrating keratoplasty in keratoconus: analysis of the factors associated with final visual acuities.

Aim: To investigate the long-term results of penetrating keratoplasty (PK) in patients with keratoconus (KC) and to evaluate factors that might influence the final visual outcome.

Methods: We retrospectively reviewed the data of all patients with clinical KC who had undergone PK by a single corneal surgeon in a single center from May 1980 to December 2005. The age of the patients, preoperative best-corrected visual acuity (BCVA), corneal thickness, death to preservation time, and preservation to transplantation time were recorded.

Comparison of clinical efficacies of autologous serum eye drops in patients with primary and secondary Sjögren syndrome.

Purpose: Autologous serum eye drops are considered to be safe and efficient for the treatment of dry eyes associated with Sjögren syndrome (SS). The purpose of this study was to compare the clinical efficacies of autologous serum eye drops in the management of primary and secondary SS.

Methods: Patients with primary (n = 20; 35 eyes) and secondary (n = 14; 27 eyes) SS dry eye were included.

LASIK interface-captured foreign bodies after mild traumatic corneal scratch without flap displacement.

A 38-year-old woman developed diffusely distributed opacities with crystalline materials in the laser in situ keratomileusis (LASIK) interface of her eye after she was scratched by a sprig during mountain climbing. No sign of flap displacement was noted. Despite two days of topical and systemic antibiotics therapy, the corneal infiltration with interface opacities persisted.

Progression of keratoconus by longitudinal assessment with corneal topography.

Purpose: To investigate the longitudinal changes in corneal topographic indices over time in patients with mild keratoconus (KC) and to determine predictive factors for the increase in corneal curvature.

Methods: The authors retrospectively reviewed the data of 94 eyes of patients with mild KC who had undergone computerized videokeratography (Orbscan IIz; Bausch & Lomb Surgical, Rochester, NY) at least twice at an interval of ≥1 year. Patients with an increase of ≥1.

Prevalence and associated factors of diabetic retinopathy in rural Korea: the Chungju metabolic disease cohort study.

This study was aimed to investigate the prevalence of diabetic retinopathy and its associated factors in rural Korean patients with type 2 diabetes. A population-based, cross-sectional diabetic retinopathy survey was conducted from 2005 to 2006 in 1,298 eligible participants aged over 40 yr with type 2 diabetes identified in a rural area of Chungju, Korea. Diabetic retinopathy was diagnosed by a practicing ophthalmologist using funduscopy.

A new noncontact tonometer using corneal photoelasticity: porcine eye study.

Purpose: To propose a new noncontact tonometer based on corneal photoelasticity.

Method: In this study, we experimented with 18 enucleated porcine eyes. The anterior chamber was infused with a physiological solution.

Two cases of corneal ulcer due to methicillin-resistant Staphylococcus aureus in high risk groups.

Considering the popular use of antibiotic-containing eyedrops in Korea, it is important to know the emerging antibiotic-resistant strains of bacteria before treating infectious eye diseases. This is especially important in high-risk groups because of the high incidence of resistant infections and the subsequent treatment requirements. We report two cases of methicillin-resistant Staphylococcus aureus (MRSA) corneal ulcers in high-risk groups.

Endothelial damage of a donor cornea depending on the donor insertion method during Descemet-stripping automated endothelial keratoplasty in porcine eyes.

Purpose: To compare endothelial damage of the donor cornea in relation to the method of inserting the donor cornea into the recipient anterior chamber during Descemet-stripping automated endothelial keratoplasty (DSAEK).

Methods: Fifteen enucleated pig eyes were used. The donor corneoscleral buttons were mounted in an artificial anterior chamber.

Enhancing struvite precipitation potential for ammonia nitrogen removal in municipal landfill leachate.

This study was conducted to improve struvite precipitation for NH4-N removal purpose in landfill leachate. For this purpose, we evaluated the effect of the feeding sequence of precipitating reagents (magnesium, orthophosphate, and buffering reagent) on NH4-N removal by forming struvite deposits. Struvite precipitation effectively proceeded by an addition of excess magnesium and phosphate sources followed by an addition of the buffering reagent, in which condition the local formation of inappropriate deposits or the contamination of the desired struvite was minimized.