George S. Athwal
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View article: Exploring Age-Related Differences in Asymptomatic Male Shoulder Kinematics using Four-Dimensional Computed Tomography
Exploring Age-Related Differences in Asymptomatic Male Shoulder Kinematics using Four-Dimensional Computed Tomography Open
View article: Outcomes of anatomic versus reverse shoulder arthroplasty for B2 & B3 glenoids with an intact rotator cuff: An updated systematic review and proportional meta-analysis
Outcomes of anatomic versus reverse shoulder arthroplasty for B2 & B3 glenoids with an intact rotator cuff: An updated systematic review and proportional meta-analysis Open
Background It is unclear whether anatomic total shoulder arthroplasty (aTSA) or reverse total shoulder arthroplasty (rTSA) produces better outcomes in patients with Walch type B2 and B3 glenoids. The purpose of this systematic review was t…
View article: Both Linear and Area-based Methods Provide an Accurate and Reliable Measurement of Anterior Shoulder Instability Related Glenoid Bone Loss
Both Linear and Area-based Methods Provide an Accurate and Reliable Measurement of Anterior Shoulder Instability Related Glenoid Bone Loss Open
Background: Recurrent anterior shoulder instability may lead to capsuloligamentous and bony lesions of the glenoid and humerus. To date, there is no clear consensus on how to best measure anterior glenoid bone loss (GBL) in the setting of …
View article: Revision of reverse total shoulder arthroplasty: a scoping review of indications for revision, and revision outcomes, complications, and rerevisions
Revision of reverse total shoulder arthroplasty: a scoping review of indications for revision, and revision outcomes, complications, and rerevisions Open
The most common indications for revision rTSA following failed primary or revision rTSA were dislocation or instability, baseplate issues, and infection. One-third of patients after revision of a failed rTSA sustained a complication, most …
View article: Sex-related differences in wear patterns in primary elbow osteoarthritis
Sex-related differences in wear patterns in primary elbow osteoarthritis Open
Background We have observed differences in patterns of arthritic wear between male and female patients undergoing arthroscopic management of elbow osteoarthritis. The objective of the study was to examine sex-related radiographic differenc…
View article: Opportunities for Remote Surgeon-to-Surgeon Education : A Novel Use Case for Immersive Virtual Reality
Opportunities for Remote Surgeon-to-Surgeon Education : A Novel Use Case for Immersive Virtual Reality Open
The integration of immersive virtual reality (IVR) in orthopedic surgery offers a platform for surgeon-to-surgeon collaboration. This paper explores a new use case of IVR-based collaboration among orthopedic surgeons, focusing on three key…
View article: Glenoid preparation in reverse shoulder arthroplasty: robotic arm–assisted preparation compared to manual preparation and patient-specific guides
Glenoid preparation in reverse shoulder arthroplasty: robotic arm–assisted preparation compared to manual preparation and patient-specific guides Open
Glenoid preparation using a robotic arm with an end-effector burr and haptic boundaries was significantly better in its ability to execute a preoperatively planned implant position than manual preparation in 4 of the 5 glenoid metrics exam…
View article: Errors in implant orientation estimation in novice vs. experienced surgeons during reverse shoulder arthroplasty for a superior glenoid wear pattern
Errors in implant orientation estimation in novice vs. experienced surgeons during reverse shoulder arthroplasty for a superior glenoid wear pattern Open
View article: THE EFFECT OF RECONSTRUCTION KERNEL AND MONOCHROMATIC ENERGY PAIRS USED IN DUAL ENERGY CT IMAGING OF THE PROXIMAL HUMERUS
THE EFFECT OF RECONSTRUCTION KERNEL AND MONOCHROMATIC ENERGY PAIRS USED IN DUAL ENERGY CT IMAGING OF THE PROXIMAL HUMERUS Open
View article: Outcomes and complications of failed anatomic shoulder arthroplasty revised with reverse arthroplasty: a systematic review
Outcomes and complications of failed anatomic shoulder arthroplasty revised with reverse arthroplasty: a systematic review Open
The revision of a failed aTSA to an rTSA resulted in clinically significant benefits. The most common indication for aTSA revision was due to rotator cuff pathology, followed by instability and loosening. Despite the high potential for imp…
View article: Coracoacromial ligament integrity influences scapular spine strain after reverse shoulder arthroplasty
Coracoacromial ligament integrity influences scapular spine strain after reverse shoulder arthroplasty Open
CA ligament release in the setting of rTSA resulted in increased scapular spine and acromial strain with the arm adducted, although these increases in strain were not statistically significant. Caution should be taken intraoperatively as t…
View article: The Kouvalchouk Procedure Versus Distal Tibial Allograft For Treatment Of Posterior Shoulder Instability: The Deltoid “Hammock” Effect Exists
The Kouvalchouk Procedure Versus Distal Tibial Allograft For Treatment Of Posterior Shoulder Instability: The Deltoid “Hammock” Effect Exists Open
View article: Methodology and development of a machine learning probability calculator: Data heterogeneity limits ability to predict recurrence after arthroscopic Bankart repair
Methodology and development of a machine learning probability calculator: Data heterogeneity limits ability to predict recurrence after arthroscopic Bankart repair Open
Purpose The aim of this study was to develop and train a machine learning (ML) algorithm to create a clinical decision support tool (i.e., ML‐driven probability calculator) to be used in clinical practice to estimate recurrence rates follo…
View article: An in vitro study of glenoid implant peripheral peg interface mechanics during eccentric loading and lift‐off
An in vitro study of glenoid implant peripheral peg interface mechanics during eccentric loading and lift‐off Open
Glenoid implants used in anatomic total shoulder arthroplasties typically incorporate peripheral pegs as a design feature to support eccentric loads. These peripheral pegs and the implant‐cement‐bone interface undergo substantial cyclic te…
View article: Analysis of healthy glenohumeral arthrokinematics using four-dimensional computed tomography throughout internal rotation and forward elevation
Analysis of healthy glenohumeral arthrokinematics using four-dimensional computed tomography throughout internal rotation and forward elevation Open
This study demonstrates the significance of translational movements within the GH joint throughout IR and forward elevation, which will aid implant manufacturers in designing implants that will allow for more normalized GH translations.
View article: A review of patient matched implants for shoulder arthroplasty
A review of patient matched implants for shoulder arthroplasty Open
View article: Stemless reverse shoulder arthroplasty neck shaft angle influences humeral component time-zero fixation and survivorship: a cadaveric biomechanical assessment
Stemless reverse shoulder arthroplasty neck shaft angle influences humeral component time-zero fixation and survivorship: a cadaveric biomechanical assessment Open
View article: Scapular morphology variation affects reverse total shoulder arthroplasty biomechanics. A predictive simulation study using statistical and musculoskeletal shoulder models
Scapular morphology variation affects reverse total shoulder arthroplasty biomechanics. A predictive simulation study using statistical and musculoskeletal shoulder models Open
Reverse total shoulder arthroplasty (RTSA) accounts for over half of shoulder replacement surgeries. At present, the optimal position of RTSA components is unknown. Previous biomechanical studies have investigated the effect of construct p…
View article: Developing a machine learning algorithm to predict the probability of aseptic loosening of the glenoid component after anatomical total shoulder arthroplasty: protocol for a retrospective, multicentre study
Developing a machine learning algorithm to predict the probability of aseptic loosening of the glenoid component after anatomical total shoulder arthroplasty: protocol for a retrospective, multicentre study Open
Introduction Despite technological advancements in recent years, glenoid component loosening remains a common complication after anatomical total shoulder arthroplasty (ATSA) and is one of the main causes of revision surgery. Increasing em…
View article: Statistical Shape and Bone Property Models of Clinical Populations as the Foundation for Biomechanical Surgical Planning: Application to Shoulder Arthroplasty
Statistical Shape and Bone Property Models of Clinical Populations as the Foundation for Biomechanical Surgical Planning: Application to Shoulder Arthroplasty Open
This work developed, validated, and compared statistical shape, statistical intensity, and statistical shape and intensity models (SSMs, SIMs, SSIMs) of scapulae from a clinical population. SSMs efficiently describe bone shape variation wh…
View article: Reverse shoulder arthroplasty: State-of-the-art
Reverse shoulder arthroplasty: State-of-the-art Open
View article: Mixed reality visualization in shoulder arthroplasty: is it better than traditional preoperative planning software?
Mixed reality visualization in shoulder arthroplasty: is it better than traditional preoperative planning software? Open
Background: Preoperative traditional software planning (TSP) is a method used to assist surgeons with implant selection and glenoid guide-pin insertion in shoulder arthroplasty. Mixed-Reality (MR) is a new technology that uses digital holo…
View article: Position statement: management of rotator cuff tears in adults
Position statement: management of rotator cuff tears in adults Open
We sought to compare success and re-tear rates of surgically treated full-thickness tears of the rotator cuff in men and women older than 18 years of age to develop a guideline intended for orthopedic surgeons and other health care provide…
View article: Strength after the arthroscopic Latarjet procedure: Are shoulder internal rotation, elbow flexion & supination strength decreased?
Strength after the arthroscopic Latarjet procedure: Are shoulder internal rotation, elbow flexion & supination strength decreased? Open
Background The Latarjet procedure is an effective shoulder stabilizing surgery, however, the procedure results in an alteration of anatomy that may result in shoulder and elbow weakness. Thus, the purpose of this study was to assess post-o…
View article: Evaluation and treatment of postoperative periprosthetic humeral fragility fractures
Evaluation and treatment of postoperative periprosthetic humeral fragility fractures Open
Summary: Postoperative periprosthetic humeral shaft fractures represent a growing and difficult complication to treat given the aging patient population and associated bone loss. Determining the best treatment option is multifactorial, inc…
View article: Developing a machine learning algorithm to predict probability of retear and functional outcomes in patients undergoing rotator cuff repair surgery: protocol for a retrospective, multicentre study
Developing a machine learning algorithm to predict probability of retear and functional outcomes in patients undergoing rotator cuff repair surgery: protocol for a retrospective, multicentre study Open
Introduction The effectiveness of rotator cuff tear repair surgery is influenced by multiple patient-related, pathology-centred and technical factors, which is thought to contribute to the reported retear rates between 17% and 94%. Adequat…
View article: Comparison of clinical‐CT segmentation techniques for measuring subchondral bone cyst volume in glenohumeral osteoarthritis
Comparison of clinical‐CT segmentation techniques for measuring subchondral bone cyst volume in glenohumeral osteoarthritis Open
Purpose This study aimed to assess the accuracy and reproducibility of four common segmentation techniques measuring subchondral bone cyst volume in clinical‐CT scans of glenohumeral OA patients. Methods Ten humeral head osteotomies collec…
View article: Development and training of a machine learning algorithm to identify patients at risk for recurrence following an arthroscopic Bankart repair (CLEARER): protocol for a retrospective, multicentre, cohort study
Development and training of a machine learning algorithm to identify patients at risk for recurrence following an arthroscopic Bankart repair (CLEARER): protocol for a retrospective, multicentre, cohort study Open
Introduction Shoulder instability is a common injury, with a reported incidence of 23.9 per 100 000 person-years. There is still an ongoing debate on the most effective treatment strategy. Non-operative treatment has recurrence rates of up…
View article: Can we predict the humerus stem component size required to achieve rotational stability in metaphyseal stability concept?
Can we predict the humerus stem component size required to achieve rotational stability in metaphyseal stability concept? Open
View article: Arthroscopic reduction and internal fixation of capitellar and trochlear fractures: A case series
Arthroscopic reduction and internal fixation of capitellar and trochlear fractures: A case series Open
Background In a simple isolated capitellar/trochlear fracture without extensive posterior comminution, arthroscopic reduction and internal fixation (ARIF) can provide an alternative option to open reduction internal fixation. The purpose o…