Does timing influence rehabilitation outcomes in arthroscopic rotator cuff repair with biceps rerouting? a prospective randomized study.

Background: Arthroscopic rotator cuff repair with biceps rerouting (ABR) has emerged as a reliable option for treating large posterosuperior rotator cuff tears (RCTs). This study aims to compare functional and structural outcomes of early vs. delayed motion rehabilitation protocols following ABR.

Anterior capsular reconstruction in irreparable subscapularis tear: human dermal allograft.

Background: The irreparable subscapularis (SSc) tears pose an extremely difficult situation to manage, especially in the younger population. The anterior capsular reconstruction (ACR) with human dermal allograft (HDA) is an alternative to tendon transfer with sound biomechanical advantages and clinical outcomes. The purpose of this study was to evaluate the early clinical and radiologic outcomes of open ACR with HDA in patients with irreparable SSc tears.

Arthroscopic decompression of calcific tendinitis without cuff repair.

Aims: The aim of this study was to investigate the outcomes of arthroscopic decompression of calcific tendinitis performed without repairing the rotator cuff defect.

Methods: A total of 99 patients who underwent treatment between December 2013 and August 2019 were retrospectively reviewed. Visual analogue scale (VAS) and American Shoulder and Elbow Surgeons (ASES) scores were reviewed pre- and postoperatively according to the location, size, physical characteristics, and radiological features of the calcific deposits.

"Cannula-in-cannula" technique for turbulence control and suture management in arthroscopic superior capsular reconstruction-A technical note.

Arthroscopic superior capsular reconstruction is gaining popularity in managing irreparable rotator cuff tears in younger patients without arthrosis. One of many reasons for the increase in this trend is the simplification of technique using allograft and knotless technology for fixation. Despite all this, turbulence control and suture management are still arduous undertakings.

Synovial Osteochondromatosis: Clinical Characteristics Unique to the Shoulder.

Background: Synovial osteochondromatosis (SOC) of the shoulder is a rare condition with unclear characteristics. This study evaluated the clinical features and postoperative functional outcomes of SOC of the shoulder that are distinct from SOC of other joints.

Methods: The characteristics of 28 shoulders with SOC that underwent arthroscopy were retrospectively assessed.

Long-term outcomes after humeral head replacement and total shoulder replacement for osteonecrosis of the humeral head: a mean follow-up of 8 years.

Introduction: The purpose of this study was to compare the outcomes and complications after humeral head replacement (HHR) and total shoulder replacement (TSR) in patients with osteonecrosis of the humeral head (ONHH).

Materials And Methods: Twenty-six patients who underwent shoulder replacement (13 HHRs and 13 TSRs) for nontraumatic ONHH were included. The mean follow-up period was 96.

The scissors sign: a provocative test for detecting the leading-edge tear of subscapularis tendon: a diagnostic study.

Background: Several physical examination tests and signs have been described to aid in the diagnosis of subscapularis (SSC) tear, but have limitations and variable sensitivity. This study aimed to introduce a novel test for detecting a leading-edge tear of the subscapularis (LETS), the most important tendinous portion of SSC.

Methods: A total of 233 patients who underwent arthroscopic repair for anterior and superior cuff tears between January 2018 to September 2019 were retrospectively reviewed.

Clinical and Radiologic Outcomes of Small Glenoid Baseplate in Reverse Total Shoulder Arthroplasty: A Prospective Multicenter Study.

Background: The purpose of this study was to evaluate the clinical and radiologic outcomes of reverse total shoulder arthroplasty (RTSA) using a small glenoid baseplate in patients with a small glenoid and to analyze the contributing factors to scapular notching.

Methods: A total of 71 RTSAs performed using a 25-mm baseplate were evaluated at a mean of 37.0 ± 3.

Antegrade Intramedullary Fixation for Clavicular Shaft Fracture: A Technical Trick.

The standard open reduction and internal fixation technique with a plate and screws for a simple mid shaft clavicular fracture necessitates a relatively large incision and can also lead to variable amount of keloid scar formation. Historically, other techniques of more minimally invasive retrograde intramedullary fixation with the entry point posterolaterally on the shoulder have shown their own disadvantages and complications. We present a surgical technique of antegrade intramedullary fixation for mid shaft clavicular fractures and an illustrative case series.

Subacromial Erosion After Hook Plate Fixation in Acute Acromioclavicular Joint Dislocation.

Objectives: To determine the incidence of subacromial erosion, perform quantitative analysis, and identify risk factors after locking hook plate fixation for acute acromioclavicular joint injury.

Design: A retrospective case series study.

Setting: A single tertiary university hospital.

Medialized vs. lateralized humeral implant in reverse total shoulder arthroplasty: the comparison of outcomes in pseudoparalysis with massive rotator cuff tear.

Background: With the increasing use of lateralized humeral implants in reverse total shoulder arthroplasty (RTSA), it is still unclear whether this design will be as advantageous as the medialized humeral implants in the setting of pseudoparalysis (PP).

Methods: A total of 51 eligible RTSA cases for PP signs due to massive rotator cuff deficiency were selected for the retrospective review. Twenty-five patients were allocated to group L in which the isolated humeral side lateralization was performed (neck-shaft angle of 145°), and 26 patients were allocated to group M (neck-shaft angle of 155°).

Retracted Rotator Cuff Repairs Heal With Disorganized Fibrogenesis Without Affecting Biomechanical Properties: A Comparative Animal Model Study.

Purpose: To determine the differences in the scar tissue formation during the healing of the repaired retracted cuff tear from that of the nonretracted tear.

Methods: Eighteen right rabbit shoulders received a 1-cm transverse cuff incision over the footprint to simulate "nonretracted cuff tears" before the transosseous repairs (group A). A 1-cm tendinous portion was excised from 18 left shoulders to create defects to simulate "retracted cuff tears" before repairing the defects (group B).

Knowledge and Attitudes toward Advance Directives among Middle-Aged Women.

Purpose: This study investigated knowledge of and attitudes toward advance directives (ADs) among middle-aged women in South Korea, their willingness to write ADs in the future, and the factors related to knowledge of and attitudes toward ADs.

Methods: Data were collected using a self-administrated questionnaire completed by 154 middle-aged women aged 50 to 64 from February to March 2020. The questionnaire asked about participants' knowledge of and attitude toward ADs, willingness to write ADs in the future, experiences with life-sustaining treatment within their families, experience making decisions about life-sustaining treatment, and demographic characteristics.

Nontendinous healing after repairing of retracted rotator cuff tear: an imaging study.

Background: Follow-up magnetic resonance imaging (MRI) after rotator cuff repair can sometimes demonstrate healing with nontendinous tissue that extends from the footprint to the retracted tendon end, which is inferred as fibrous tissue formation. The aim was to investigate this particular finding and its significance.

Methods: There were 494 eligible cases of healed supero-posterior medium-sized to massive rotator cuff repairs, after the exclusion of retears.

Effects of comorbidities on the outcomes of manipulation under anesthesia for primary stiff shoulder.

Background: Studies on the effects of manipulation under anesthesia (MUA) for primary stiff shoulder when different comorbidities are present are lacking. Our aim was to assess how comorbidities influence the recovery speed and clinical outcomes after MUA.

Methods: Between April 2013 and September 2018, 281 consecutive primary stiff shoulders in the frozen phase treated with MUA were included in this study.

Clinical Outcomes after Reverse Total Shoulder Arthroplasty According to Primary Diagnosis.

Background: To compare the clinical outcomes of reverse total shoulder arthroplasty (RTSA) according to the primary diagnosis.

Methods: In 98 shoulders (97 patients), RTSA was performed for cuff tear arthropathy (45), massive rotator cuff tear without glenohumeral arthritis (31), posttraumatic arthritis (9), primary osteoarthritis (6), rheumatoid arthritis (4), and arthritis due to infection sequelae (3). The average age of the patients at surgery was 68.

Electrostatic shock acceleration of ions in near-critical-density plasma driven by a femtosecond petawatt laser.

With the recent advances in ultrahigh intensity lasers, exotic astrophysical phenomena can be investigated in laboratory environments. Collisionless shock in a plasma, prevalent in astrophysical events, is produced when a strong electric or electromagnetic force induces a shock structure in a time scale shorter than the collision time of charged particles. A near-critical-density (NCD) plasma, generated with an intense femtosecond laser, can be utilized to excite a collisionless shock due to its efficient and rapid energy absorption.

Assessment of postoperative acromial and subacromial morphology after arthroscopic acromioplasty using magnetic resonance imaging.

Objective: To identify the morphological characteristics of the acromion and subacromial bursal space after arthroscopic acromioplasty using magnetic resonance imaging (MRI).

Materials And Methods: One hundred patients who received arthroscopic rotator cuff repair and acromioplasty each received at least three MRI examinations (preoperative, first immediate postoperative, and second follow-up imaging between 8 months and 1 year postoperatively). Changes over time in the thickness and morphology of the postoperative acromion as well as the subacromial bursal space were assessed.

Hematologic Expression After Shoulder Surgery: Normalization Curve of Serum Inflammatory Markers.

Purpose: To determine the normalization curves of the serologic markers including white blood cell (WBC) count, WBC differential for segmented neutrophil (WBC seg.), erythrocyte sedimentation rate (ESR), and C-reactive protein (CRP) after elective shoulder surgery and to investigate the hematologic differences among different shoulder surgeries.

Methods: Seventy-seven patients underwent arthroscopic rotator cuff repair (RCR, group A), 44 patients had open rotator cuff repair (group B), and 84 patients had shoulder arthroplasty (group C).