Does prior rotator cuff surgery influence the outcomes and complications after reverse total shoulder arthroplasty in patients with cuff tear arthropathy or massive rotator cuff tear? A propensity score-matched study.

Background: The aim of this study was to compare outcomes and complications in patients with and without a history of prior rotator cuff surgery who underwent reverse total shoulder arthroplasty (RTSA).

Methods: Two-hundred and nine consecutive patients who had undergone RTSA for rotator cuff insufficiency with a minimum 12-months follow-up period were reviewed. A total of 35 patients with a history of prior rotator cuff surgery were made the study group (PS group).

Complication Analysis in Korean Patients With Hemophilia A From 2007 to 2019: A Nationwide Study by the Health Insurance Review and Assessment Service Database.

Background: There has been remarkable progress in hemophilia A (HA) treatment in Korea. Viral inactivation products were developed in 1989, use of recombinant factor VIII (FVIII) concentrates started in 2002, and prophylaxis expanded thereafter. This study was conducted to identify the changes in complications in HA before and after 1989 or 2002.

Does reverse shoulder arthroplasty improve emotional status and quality of life in patients with rotator cuff insufficiency? Prospective sequential follow-up study.

Background: The purpose of this study was to investigate sequential changes of emotional status and quality of life after reverse shoulder arthroplasty (RSA) for rotator cuff insufficiency and to determine the predictors that can affect postoperative clinical outcomes. This study was conducted to prove the hypothesis that RSA would improve emotional status and quality of life.

Methods: Fifty patients undergoing RSA for rotator cuff insufficiency were prospectively included.

Comparative Efficacy of Rotator Interval Versus Posterior Capsule Approach Intraarticular Corticosteroid Injections for Primary Frozen Shoulder: A Single-blind, Randomized Trial.

Background: Intraarticular (IA) corticosteroid injection is commonly performed in patients with primary frozen shoulder (PFS). However, the best administration site remains controversial.

Objectives: To compare the efficacy of rotator interval (RI) vs posterior capsule (PC) approach for ultrasound-guided corticosteroid injections into the glenohumeral joint of patients with PFS.

Polo-like kinase 4 as a potential predictive biomarker of chemoradioresistance in locally advanced rectal cancer.

Background: Polo-like kinase 4 (PLK4) is a serine/threonine protein kinase located in the centriole of the chromosome during the cell cycle. PLK4 overexpression has been described in a variety of many common human epithelial tumors. Conversely, PLK4 acts as a haploinsufficient tumor suppressor in some situations, highlighting the importance of strict regulation of PLK4 expression, activity, and function.

Association of PTTG1 expression with invasiveness of non-functioning pituitary adenomas.

Background: Pituitary tumor transforming gene 1 (PTTG1), paired-like homeodomain 2 (PITX2), and galectin-3 have been widely studied as predictive biomarkers for various tumors and are involved in tumorigenesis and tumor progression. We evaluated the usefulness of PTTG1, PITX2, and galectin-3 as predictive biomarkers for invasive non-functioning pituitary adenomas (NFPAs) by determining the relationship between the expressions of these three proteins and the invasiveness of the NFPAs. We also investigated whether PTTG1, E-cadherin, and Ki-67, which are known to be related to each other, show a correlation with NFPA features.

Negative pressure wound therapy for cervical esophageal perforation with abscess.

Perforation of the cervical esophagus is a rare but life-threatening condition. Cervical esophageal perforation with abscess formation can be usually treated with conservative treatments of simple drainage and antibiotics. Aggressive surgical treatments are considered if conservative treatments fail.

[Conquering process of the group-bullies among teenagers].

Purpose: This study was to develop a substantive theory on the conquering experience of group-bullies among teenagers, and thereafter suggest a model for solving the problems.

Method: Data collection and analysis was proceeded by a method of Grounded Theory. Data was collected by interviewing the participants.