Reverse Versus Anatomic Total Shoulder Arthroplasty for Glenohumeral Osteoarthritis with Intact Cuff: A Meta-Analysis of Clinical Outcomes.

BACKGROUND: Anatomic and reverse shoulder arthroplasty (TSA, RSA) have surged in popularity in recent years. While RSA is Food and Drug Administration (FDA) approved for cases of rotator cuff tear arthropathy, indications have expanded to include, among others, primary glenohumeral osteoarthritis (GHOA). METHODS: PubMed, Cochrane, and Google Scholar (pages 1-20) were queried through November 2023. Inclusion criteria consisted of studies that compared the utility of TSA to that of RSA for the treatment of GHOA with intact rotator cuff with respect to adverse events, patient-reported outcomes, and range of motion. The ROBINS-I tool was used to assess the risk of bias in the included non-randomized studies, and Review Manager 5.4 was used for statistical analysis. P-values <0.05 were deemed significant. RESULTS: Fourteen studies met the above inclusion criteria. Twelve studies reported adverse outcomes, with the RSA group having a lower rate of complications (odds-ratio=0.54, p=0.004) and reoperations (odds-ratio=0.31, p<.001) relative to TSA at an average follow-up of 3.4 years. Four studies reported SPADI and UCLA scores, while five reported SST scores. These studies showed superior SPADI (p=0.040), UCLA(p=0.006), and SST(p=0.040) scores among the RSA group. No significant differences were seen with regards to other patient reported outcomes. Ten studies reported on range of motion, and the RSA group had a significantly lower external rotation relative to the TSA group (p<.001) while other range of motion parameters did not show statistically significant differences. CONCLUSION: The present study provides support for RSA as a reasonable surgical option for patients with GHOA and an intact rotator cuff, with lower rates of adverse events and better outcomes relative to TSA, although at the expense of decreased external rotation. Patient education and counseling is key in order to decide optimal treatment as part of a shared decision-making process, as well as setting appropriate expectations.

Pyrocarbon hemiarthroplasty and the shoulder: biomechanical and clinical results of an emerging treatment option.

While shoulder hemiarthroplasty is still used to treat young patients with shoulder pathology, the use of this procedure has substantially declined in recent years due to its significant complication profile. Glenoid wear with arthrosis is one of the major postoperative complications following shoulder hemiarthroplasty, and efforts to prevent this complication led many scientists to explore alternative weight-bearing surfaces on arthroplasty implants to decrease joint wear and improve patient outcomes. Pyrolytic carbon, or pyrocarbon, is a material that has better biocompatibility, survivorship, strength, and wear resistance compared to the materials used in traditional shoulder hemiarthroplasty. Pyrocarbon implants have been used in orthopedics for over 50 years; recently, their utility in shoulder hemiarthroplasty has garnered much interest. The purpose behind the use of pyrocarbon in shoulder hemiarthroplasty is to decrease the risk of progressive glenoid wear, especially in young active patients in whom joint preservation is important. Promising survivorship and outcomes have been demonstrated by recent studies, including limited glenoid wear following pyrocarbon hemiarthroplasty. Nevertheless, these clinical studies have been limited to relatively small case series with limited long-term follow-up. Accordingly, additional research and comparative studies need to be conducted in order to properly assess the therapeutic efficacy and value of pyrocarbon hemiarthroplasty.

Modified Weaver Dunn Versus Ligamentous Reconstruction Grafts in Chronic Acromioclavicular Joint Dislocation: A Systematic Review and Meta-Analysis of Comparative Studies.

Background: Acromioclavicular (AC) joint trauma is a frequent sports injury. Modified Weaver Dunn (MWD) is a commonly used technique to address this injury. However, tendinous grafts (Autogenous Palmaris Longus or Semitendinosus tendons) are increasingly being used due to the biologic weakness of MWD. Methods: Three search was done until January 2024 with data extraction consisting of adverse events (infections and failures), Constant-Murley score, American Shoulder and Elbow Surgeons score, and postoperative coracoclavicular distance. Results: Four studies were included in this metaanalysis. Tendinous graft was shown to have statistically better ASES and Constant-Murley scores. Furthermore, there were no difference in adverse events, and postoperative coracoclavicular distance. Conclusion: The tendinous graft showed no differences in adverse events, and postoperative coracoclavicular distance when compared to modified Weaver Dunn. However, it showed higher postoperative ASES and Constant-Murley score without analysis of the minimal clinical important difference making the difference solely statistical. Level of evidence: 3.

Top fifty cited articles on humeral fractures.

Background: Humeral fractures (HF) are common orthopedic pathologies. Reviewing the content and quality of influential literature over time is important to advance scientific research regarding a specific topic. This study aims to explore and appraise the fifty most cited HF studies that had been published in orthopedic literature. Methods: The Web of Science database was used to conduct a systematic search for articles pertaining to HF. Articles were sorted out in descending order of citations and were included based on their relevance to HF. Data and metrics of the included studies were recorded. The methodological quality of the studies was assessed using the Modified Coleman Methodology Score (MCMS) and the Methodological Index for Non-randomized Studies criteria. Statistical analysis was conducted to explore any significant relationships between the date of publication and other relevant variables. Results: Included articles (N = 50) were published between 1959 and 2015, with a total of 14,864 accumulated citations. Europe and North America contributed to all but one of the included studies. The Journal of Bone and Joint Surgery contributed to the highest number of included articles with 27 articles (54%). The proximal humerus was the most commonly explored HF location in our study (72%). The average MCMS and Methodological Index for Non-randomized Studies scores were reported to be 64.6 and 10.4, respectively, and the majority of articles (52%) were considered level four case series. Year of publication was found to have a positive correlation with increasing level of evidence(r = -0.301, P = .044), citation density (r = 0.734, P < .001), and MCMS score (r = 0.41, P = .01). Conclusion: The level of evidence, MCMS scores, and citation density of influential HF literature has been increasing with time, reflecting the increasing effort and work being put in that field. While the findings seem encouraging, additional high-quality research is needed to help achieve better treatment strategies and outcomes.

Sleep disturbances in rotator cuff pathology: insights into mechanisms and clinical implications.

Rotator cuff disease is highly prevalent and can have a detrimental effect on the quality of life of affected patients. One of the most common complaints from rotator cuff disease is sleep disturbance due to shoulder pain. Numerous studies have attempted to explore the relationship between rotator cuff disease and sleep disturbance, but results are inconsistent and limited. In this setting, the Pittsburgh Sleep Quality Index (PSQI) plays an important role in preoperative assessment and evaluation of sleep in rotator cuff patients. However, despite the current efforts, the literature presents conflicting results regarding the relationships between magnetic resonance imaging characteristics of rotator cuff tear and PSQI score, signifying a gap in understanding. That being said, it has been shown that rotator cuff repair surgery can alleviate sleep disturbances witnessed preoperatively in and can restore quality of life.

Beyond the joint: Exploring the interplay between mental health and shoulder arthroplasty outcomes.

Considering the fact that mental health illnesses increase with age, and that shoulder arthroplasty procedures are often indicated in the older population, exploring the relationship between mental health and shoulder arthroplasty outcomes can have pivotal implications for shoulder surgeons and patients worldwide. The literature has shown that patients with poor mental health report lower patient-reported outcomes, higher peri-operative complications (such as anemia, infection, delirium, and others), lengthier hospital stays, and higher readmission rates than the normal patient. Employing a holistic approach when managing shoulder arthroplasty patients is necessary for optimizing outcomes and setting up recovery expectations.

International Medical Graduates in US Orthopedic Residency Programs: A Comprehensive Analysis.

BACKGROUND: This study aims to provide insight regarding the different qualities of international medical graduates (IMGs) involved in US orthopedic residency programs. METHODS: Orthopedic residency programs accredited by the ACGME and listed in the AMA database were screened. Data on program size and location, IMG year of training, the geographic region of IMG's medical schools, their research experiences and number of gap years were included. RESULTS: A total of 167(80.3%) orthopedic residency programs were included. A total of 3838 residents were identified, of which 44 (1.15%) were IMGs. The United Kingdom and Ireland had the highest number of matched IMGs with four (9.1%) each. Massachusetts was the state with the highest number of enrolled IMGs. On average, IMGs had 26.3 publications and joined US orthopedic residency 4.66 years following medical school graduation. CONCLUSION: Despite the many hurdles experienced by IMGs, a decent number succeeds in matching into US orthopedic residency programs each year.

The 100 Most Impactful Articles on Total Shoulder Arthroplasty: An Altmetric Analysis.

Background: To use the top 100 articles pertaining to total shoulder arthroplasty (TSA) to understand the impact that social media platforms have on the dissemination of shoulder research while highlighting bibliometric factors associated with Altmetric Attention Score (AAS) to offer insight into the impact that social media platforms have on the dissemination, attention, and citation of shoulder research publications. Methods: In June 2023, the Altmetric database was searched using the following PubMed MeSH terms: "total shoulder arthroplasty" or "TSA." Articles with the highest AAS were screened to exclude other topics unrelated to TSA. The top 100 articles that met inclusion criteria were used in the final analysis. Bibliometric factors pertaining to each study were collected for further analysis of article characteristics in accordance with prior studies. Results: The Altmetric Database query yielded 1,283 studies. After applying our inclusion criteria, the top 118 articles with the highest AAS were identified. The mean AAS was 29.14 ± 42.35, with a range of 13 to 402. The included articles represented 27 journals, with 70 articles attributed to 2 journals: Journal of Shoulder and Elbow Surgery (JSES; 43%) and the Journal of Bone and Joint Surgery (JBJS; 16%). There was a significant increase in AAS for the presence of a conflict of interest (p = 0.042) and open access status (p < 0.01), but no association between the score and citation rate (p > 0.05). Conclusions: Top articles on TSA, as defined by high AAS, mostly comprise original clinical research performed in the United States or Europe. The presence of a conflict of interest and open access status is associated with an increase in AAS, but there was no association between AAS score and citation rate.

Rheumatoid arthritis is associated with higher 90-day systemic complications compared to osteoarthritis after total shoulder arthroplasty: a cohort study.

Background: Total shoulder arthroplasty (TSA) in patients with rheumatoid arthritis (RA) can present unique challenges. The aim of this study was to compare both systemic and joint-related postoperative complications in patients undergoing primary TSA with RA versus those with primary osteoarthritis (OA). Methods: Using the TriNetX database, Current Procedural Terminology and International Classification of Diseases, 10th edition codes were used to identify patients who underwent primary TSA. Patients were categorized into two cohorts: RA and OA. After 1:1 propensity score matching, postoperative systemic complications within 90 days following primary TSA and joint-related complications within 5 years following anatomic TSA (aTSA) and reverse shoulder arthroplasty (RSA) were compared. Results: After propensity score matching, the RA and OA cohorts each consisted of 8,523 patients. Within 90 days postoperation, RA patients had a significantly higher risk of total complications, deep surgical site infection, wound dehiscence, pneumonia, myocardial infarction, acute renal failure, urinary tract infection, mortality, and readmission compared to the OA cohort. RA patients had a significantly greater risk of periprosthetic joint infection and prosthetic dislocation within 5 years following aTSA and RSA, and a greater risk of scapular fractures following RSA. Among RA patients, RSA had a significantly higher risk of prosthetic dislocation, scapular fractures, and revision compared to aTSA. Conclusions: Following TSA, RA patients should be considered at higher risk of systemic and joint-related complications compared to patients with primary OA. Knowledge of the risk profile of RA patients undergoing TSA is essential for appropriate patient counseling and education. Level of evidence: III.

The impact of mental health on shoulder arthroplasty and rotator cuff repair: a meta-analysis.

Background: The aim of this study was to evaluate the impact of mental health attributes, such as the presence of psychiatric comorbidities or psychological comorbidities (low resilience), on outcomes after rotator cuff repair (RCR) and total shoulder arthroplasty (TSA). Methods: PubMed, Cochrane, and Google Scholar (results pages 1-20) were searched up to November 2023. Mental health problems of interest included the presence of psychiatric comorbidities (depression, anxiety) or indicators of poor psychological functioning, such as low resilience or the presence of distress. Patients were assigned to poor or good mental health groups in this study based on their grouping in the original study. Results: Fourteen studies were included in the meta-analysis. Patients with good mental health had greater improvements in postoperative American Shoulder and Elbow Surgeons and Simple Shoulder Test scores in the TSA cohort (P=0.003 and P=0.01), RCR cohort (P<0.001), and the combined TSA and RCR cohort (P<0.001). No difference was found in visual analog scale score, satisfaction, external rotation, or flexion between the two mental health groups. Patients with poor mental health undergoing RCR experienced higher rates of adverse events and transfusions (P<0.001). Patients with poor mental health also had greater rates of revision and emergency department visits in the TSA cohort (P<0.001), RCR cohort (P=0.05 and P=0.03), and combined cohort (P<0.001). Patients with poor mental health undergoing TSA had a higher rate of re-admission (P<0.001). Conclusions: Patients with poor preoperative mental health showed inferior patient-reported outcome scores and increased rates of adverse events, revisions, and re-admissions.

The role of vitamin D in shoulder health: a comprehensive review of its impact on rotator cuff tears and surgical results.

Vitamin D deficiency is highly prevalent in the general population and is associated with various chronic health conditions. In addition to its role in bone mineralization, Vitamin D has various physiological effects that may impact the pathogenesis of shoulder pathologies. Vitamin D deficiency may also affect outcomes after shoulder surgeries, such as rotator cuff repair and total shoulder arthroplasty. Vitamin D plays a role in tissue healing, bone growth, and maintenance of homeostasis in skeletal muscle cells. Vitamin D also has anti-inflammatory effects that are important to rotator cuff health. Vitamin D deficiency is highly prevalent in patients with rotator cuff tears, suggesting its role as a potential risk factor. Vitamin D deficiency has been associated with decreased preoperative shoulder strength as well as increased re-tear rates, postoperative stiffness, and the need for revision surgery in patients who underwent rotator cuff repair. Studies have also demonstrated a potential association between vitamin D deficiency and increased risk of revision after total shoulder arthroplasty. Further research is necessary to elucidate the direct role of vitamin D in the pathogenesis of rotator cuff tears and its impact on clinical outcomes after rotator cuff surgery and total shoulder arthroplasty.

Untwining the intertwined: a comprehensive review on differentiating pathologies of the shoulder and spine.

Background: The anatomic interplay and overlap between the cervical spine and the shoulder constitutes a challenge for shoulder and spine surgeons, as symptoms of spine and shoulder pathologies are often similar and may lead to entity misdiagnosis. Methods: PubMed, Cochrane, and Google Scholar (page 1-20) searches were updated to October 2023 in search of the qualified papers. Boolean Operators were used with a combination of the keywords "spine" OR "neck" And "Shoulder". Furthermore, reference lists from papers were also searched to find literature. Results: It is of pivotal importance to conduct comprehensive preoperative clinical investigation to appropriately evaluate and assess the source of the pathology and the leading causes behind it. Certain markers can help guide surgeons towards etiologies, and these include areas of pain and physical exam findings with the arm squeeze test having the highest sensitivity and specificity for diagnosing cervical radiculopathy. As for the shoulder, despite its low sensitivity, the Yergason test had the highest specificity for diagnosing subacromial impingement. Local anesthetic injection can help as well in the diagnostic approach. Moreover, the interplay between these anatomic locations is not solely related to preoperative diagnosis. Studies have shown that previous surgery for cervical spine pathology may negatively affect the outcomes of shoulder procedures like arthroplasties. Conclusion: Shoulder and spine surgeons should be wary and vigilant of accurately diagnosing the etiology of the presenting symptoms to ensure proper management and optimize prognosis.

Surgical management of biconcave glenoids: a scoping review.

Biconcave (B2) glenoids, characterized by significant posterior glenoid bone loss and a biconcave wear pattern, are a challenging pathology in shoulder surgery. Significant bone defects present in B2 glenoids increases the risk of complications and rates of failure for operative patients with glenohumeral osteoarthritis. Diagnosing this entity is of pivotal importance, and can be accomplished with imaging and a comprehensive clinical investigation. There are no clear-cut guidelines for management, but options include hemiarthroplasty, anatomic total shoulder arthroplasty, and reverse shoulder arthroplasty. In recent years, modern techniques such as corrective reaming, bone grafts, and the use of augmented components have improved patient outcomes. Educating prospective patients is essential for reaching a shared management decision, setting appropriate expectations, and optimizing prognostic outcomes.

Subacromial Balloon Spacer: When to Use This?

The subacromial balloon spacer is a novel treatment option for the management of massive irreparable rotator cuff tears. This device is introduced into the glenohumeral joint and acts to alleviate the acromiohumeral impingement, caused by the massive irreparable rotator cuff tear. The device also redistributes the tension around the adjacent muscles in the joint, allowing them to compensate for the torn rotator cuff tendons. By doing so, the balloon can act as a "rehabilitation accelerator", ultimately resulting in improved shoulder pain and function. Adherence to balloon indications when selecting the appropriate patient is necessary, and these include an irreparable posterosuperior rotator cuff tear, with preserved subscapularis function, minimal to no osteoarthritis, and the ability to forward flex to 90 degrees. Clinical studies have demonstrated promising potential regarding the benefit of the balloon, with numerous studies demonstrating great outcomes after its implantation. Nevertheless, future research remains necessary to render the evidence behind its utility unequivocal.

Osteoporosis in the Setting of Shoulder Arthroplasty: A Narrative Review.

Patients who undergo shoulder surgery are frequently affected by osteoporosis and osteopenia, and the prevalence of this association is expected to increase due to the growing number of elderly individuals undergoing these procedures. It may be advisable to conduct a preoperative DXA scan for orthopedic surgical candidates at high risk, to detect those who could benefit from early intervention and avoid any related adverse events. Some of these complications include periprosthetic fractures, infection, subsequent fragility fractures, and have an all-cause revision arthroplasty at 2 years post-op. Some studies analyzed the beneficence of antiresorptive medications pre-operatively but the latter did not show favorable outcomes. Surgical management may include cementing components of the prosthesis as well as modifying the diameter of the shoulder stem. Nevertheless, more studies are needed to evaluate the efficacy of any intervention, whether medical or surgical, to avoid any shoulder arthroplasty related-complication that may be precipitated by the reduced bone mineral density.

Anterior Shoulder Instability and Open Procedures: History, Indications, and Clinical Outcomes.

The shoulder, being the most mobile joint in the human body, is often susceptible to dislocations and subluxations more so than other joints. As such, shoulder instability constitutes a common complaint among patients worldwide, especially those who are young, participate in contact sports, and have increased innate flexibility in their joints. Management options in the setting of instability vary between conservative and surgical options that aim to mitigate symptoms and allow return of function. Surgical options can be arthroscopic and open, with a general shift among surgeons towards utilizing arthroscopic surgery in the past several decades. Nevertheless, open procedures still play a role in managing shoulder instability patients, especially those with significant bone loss, recurrent instability, coexisting shoulder pathologies, and high risk of failure with arthroscopic surgery. In these clinical settings, open procedures, like the Latarjet procedure, open Bankart repair, glenoid bone augmentation using iliac crest autograft or distal tibial allograft, and salvage options like glenohumeral arthrodesis and arthroplasty may show good clinical outcomes and low recurrence rates. Each of these open procedures possesses its own set of advantages and disadvantages and entails a specific set of indications based on published literature. It is important to cater treatment options to the individual patient in order to optimize outcomes and reduce the risk of complications. Future research on open shoulder stabilization procedures should focus on the long-term outcomes of recently utilized procedures, investigate different graft options for procedures involving bone augmentation, and conduct additional comparative analyses in order to establish concrete surgical management guidelines.

Evaluation of online video content related to reverse shoulder arthroplasty: a YouTube-based study.

BACKGROUND: Reverse shoulder arthroplasty (RSA) has evolved continuously over recent years, with expanded indications and better outcomes. YouTube is one of the most popular sources globally for health-related information available to patients. Evaluating the reliability of YouTube videos concerning RSA is important to ensure proper patient education. METHODS: YouTube was queried for the term "reverse shoulder replacement." The first 50 videos were evaluated using three different scores: Journal of the American Medical Association (JAMA) benchmark criteria, the global quality score (GQS), and the reverse shoulder arthroplasty-specific score (RSAS). Multivariate linear regression analyses were conducted to determine the presence of a relationship between video characteristics and quality scores. RESULTS: The average number of views was 64,645.78±264,160.9 per video, and the average number of likes was 414 per video. Mean JAMA, GQS, and RSAS scores were 2.32±0.64, 2.31±0.82, and 5.53±2.43, respectively. Academic centers uploaded the highest number of videos, and surgical techniques/approach videos was the most common video content. Videos with lecture content predicted higher JAMA scores whereas videos uploaded by industry predicted lower RSAS scores. CONCLUSIONS: Despite its massive popularity, YouTube videos provide a low quality of information on RSA. Introducing a new editorial review process or developing a new platform for patients' medical education may be necessary. Level of evidence: Not applicable.

Online resources for information on shoulder arthroplasty: an assessment of quality and readability.

BACKGROUND: Many patients use online resources to educate themselves on surgical procedures and make well-informed healthcare decisions. The aim of our study was to evaluate the quality and readability of online resources exploring shoulder arthroplasty. METHODS: An internet search pertaining to shoulder arthroplasty (partial, anatomic, and reverse) was conducted using the three most popular online search engines. The top 25 results generated from each term in each search engine were included. Webpages were excluded if they were duplicates, advertised by search engines, subpages of other pages, required payments or subscription, or were irrelevant to our scope. Webpages were classified into different source categories. Quality of information was assessed by HONcode certification, Journal of the American Medical Association (JAMA) criteria, and DISCERN benchmark criteria. Webpage readability was assessed using the Flesch reading ease score (FRES). RESULTS: Our final dataset included 125 web pages. Academic sources were the most common with 45 web pages (36.0%) followed by physician/private practice with 39 web pages (31.2%). The mean JAMA and DISCERN scores for all web pages were 1.96±1.31 and 51.4±10.7, respectively. The total mean FRES score was 44.0±11.0. Only nine web pages (7.2%) were HONcode certified. Websites specified for healthcare professionals had the highest JAMA and DISCERN scores with means of 2.92±0.90 and 57.96±8.91, respectively (P<0.001). HONcode-certified webpages had higher quality and readability scores than other web pages. CONCLUSIONS: Web-based patient resources for shoulder arthroplasty information did not show high-quality scores and easy readability. When presenting medical information, sources should maintain a balance between readability and quality and should seek HONcode certification as it helps establish the reliability and accessibility of the presented information. Level of evidence: IV.

Breaking barriers: can ChatGPT compete with a shoulder and elbow specialist in diagnosis and management?

Background: ChatGPT is an artificial intelligence (AI) language processing model that uses deep learning to generate human-like responses to natural language inputs. Its potential use in health care has raised questions and several studies have assessed its effectiveness in writing articles, clinical reasoning, and solving complex questions. This study aims to investigate ChatGPT's capabilities and implications in diagnosing and managing patients with new shoulder and elbow complaints in a private clinical setting to provide insights into its potential use as a diagnostic tool for patients and a first consultation resource for primary physicians. Methods: In a private clinical setting, patients were assessed by ChatGPT after being seen by a shoulder and elbow specialist for shoulder and elbow symptoms. To be assessed by the AI model, a research fellow filled out a standardized form (including age, gender, major comorbidities, symptoms and the localization, natural history, and duration, any associated symptoms or movement deficit, aggravating/relieving factors, and x-ray/imaging report if present). This form was submitted through the ChatGPT portal and the AI model was asked for a diagnosis and best management modality. Results: A total of 29 patients with 15 males and 14 females, were included in this study. The AI model was able to correctly choose the diagnosis and management in 93% (27/29) and 83% (24/29) of the patients, respectively. Furthermore, of the remaining 24 patients that were managed correctly, ChatGPT did not specify the appropriate management in 6 patients and chose only one management in 5 patients, where both were applicable and dependent on the patient's choice. Therefore, 55% of ChatGPT's management was poor. Conclusion: ChatGPT made a worthy opponent; however, it will not be able to replace in its current form a shoulder and elbow specialist in diagnosing and treating patients for many reasons such as misdiagnosis, poor management, lack of empathy and interactions with patients, its dependence on magnetic resonance imaging reports, and its lack of new knowledge.

Deep Learning-Based Estimation of Implantable Collamer Lens Vault Using Optical Coherence Tomography.

PURPOSE: To develop and validate a deep learning neural network for automated measurement of implantable collamer lens (ICL) vault using anterior segment optical coherence tomography (AS-OCT). DESIGN: Cross-sectional retrospective study. METHODS: A total of 2647 AS-OCT scans were used from 139 eyes of 82 subjects who underwent ICL surgery in 3 different centers. Using transfer learning, a deep learning network was trained and validated for estimating the ICL vault on OCT. A trained operator separately reviewed all OCT scans and measured the central vault using a built-in caliper tool. The model was then separately tested on 191 scans. A Bland-Altman plot was constructed and the mean absolute percentage error (MAPE), mean absolute error (MAE), root mean squared error (RMSE), Pearson correlation coefficient (r), and determination coefficient (R2) were calculated to evaluate the strength and validity of the model. RESULTS: On the test set, the model achieved a MAPE of 3.42%, an MAE of 15.82 µm, a RMSE of 18.85 µm, a Pearson correlation coefficient r of +0.98 (P < .00001), and a coefficient of determination R2 of +0.96. There was no significant difference between the vaults of the test set labeled by the technician vs those estimated by the model: 478 ± 95 µm vs 475 ± 97 µm, respectively, P = .064). CONCLUSIONS: Using transfer learning, our deep learning neural network was able to accurately compute the ICL vault from AS-OCT scans, overcoming the limitations of an imbalanced data set and limited training data. Such an algorithm can assist the postoperative assessment in ICL surgery.