Stress shielding following stemless anatomic total shoulder arthroplasty

Background Finite element analysis has suggested that stemless implants may theoretically decrease stress shielding. The purpose of this study was to assess the radiographic proximal humeral bone adaptations seen following stemless anatomic total shoulder arthroplasty. Methods A retrospective review of 152 prospectively followed stemless total shoulder arthroplasty utilizing a single implant design was performed. Anteroposterior and lateral radiographs were reviewed at standard time points. Stress shielding was graded as mild, moderate, and severe. The effect of stress shielding on clinical and functional outcomes was assessed. Also, the influence of subscapularis management on the occurrence of stress shielding was determined. Results At 2 years postoperatively, stress shielding was noted in 61 (41%) shoulders. A total of 11 (7%) shoulders demonstrated severe stress shielding with 6 occurring along the medial calcar. There was one instance of greater tuberosity resorption. At the final follow-up, no humeral implants were radiographically loose or migrated. There was no statistically significant difference in clinical and functional outcomes between shoulders with and without stress shielding. Patients undergoing a lesser tuberosity osteotomy had lower rates of stress shielding, which was statistically significant ( p = 0.021) Discussion Stress shielding does occur at higher rates than anticipated following stemless total shoulder arthroplasty, but was not associated with implant migration or failure at 2 years follow-up. Level of evidence IV, Case series.

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Treatment Outcomes of Lesser Tuberosity Osteotomy Nonunion After Total Shoulder Arthroplasty

Journal of Shoulder and Elbow Arthroplasty ◽

10.1177/2471549218807777 ◽

2018 ◽

Vol 2 ◽

pp. 247154921880777

Author(s):

Zachary J Bloom ◽

Cesar D Lopez, BA ◽

Stephen P Maier ◽

Brian B Shiu ◽

Djuro Petkovic ◽

...

Keyword(s):

Treatment Outcomes ◽

Shoulder Arthroplasty ◽

Surgical Repair ◽

Total Shoulder Arthroplasty ◽

Case Series ◽

Radiographic Evaluation ◽

Lesser Tuberosity ◽

Conservative Care ◽

Conservative Group

Introduction Lesser tuberosity osteotomy (LTO) during anatomic total shoulder arthroplasty has a 13% nonunion rate. Treatment for LTO nonunion is controversial and poorly described in the literature. The purpose of this study was to compare the surgical and nonsurgical treatment outcomes of LTO nonunion. Methods A retrospective case series of 9 consecutive patients with LTO nonunion after primary anatomic shoulder arthroplasty at 1 institution from 2010 to 2016 were studied. Outcomes measured were radiographic evaluation of LTO on axillary X-ray, clinical range of motion (ROM), subscapularis strength, and pain at the time of LTO nonunion diagnosis and after either conservative care or surgical repair of the LTO nonunion. Results LTO nonunion was treated surgically in 4 and conservatively in 5 patients with average follow-up of 30 and 22 months, respectively. There were no significant differences in age, sex, or smoking status between groups. Treatment decision was a shared model of surgeon and patient. Displaced LTO nonunion was treated surgically in 2 and conservatively in 3 patients. There were no differences in LTO union rate of 50% in the surgical versus 60% in the conservative group. Abdominal compression test was abnormal in 50% of surgical versus 40% of conservative groups. At follow-up, ROM was lower in the surgical group with 128° forward elevation (FE) and 33° external rotation (ER) compared to 148° FE and 62° ER. Only 1 patient with LTO nonunion required conversion to reverse replacement. Conclusion LTO nonunion after shoulder arthroplasty is rare. Surgical repair of LTO nonunion does not significantly improve clinical or radiographic outcomes compared to conservative care.

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No significant difference in risk of prolonged opioid use following outpatient versus inpatient total shoulder arthroplasty: A propensity matched analysis

Shoulder & Elbow ◽

10.1177/17585732211060754 ◽

2021 ◽

pp. 175857322110607

Author(s):

Michelle Xiao ◽

Daniel M Curtis ◽

Emilie V Cheung ◽

Michael T Freehill ◽

Geoffrey D Abrams

Keyword(s):

Shoulder Arthroplasty ◽

Nearest Neighbor ◽

Total Shoulder Arthroplasty ◽

Opioid Use ◽

Therapeutic Level ◽

Level Of Evidence ◽

Opioid Prescription ◽

Significant Difference ◽

Outpatient Settings ◽

Baseline Demographic

Background The purpose of this investigation was to compare rates of filled opioid prescriptions and prolonged opioid use in opioid naïve patients undergoing total shoulder arthroplasty (TSA) in inpatient versus outpatient settings. Methods A retrospective cohort study was conducted using a national insurance claims database. Inpatient and outpatient cohorts were created by identifying continuously enrolled, opioid naïve TSA patients. A greedy nearest-neighbor algorithm was used to match baseline demographic characteristics between cohorts with a 1:1 inpatient to outpatient ratio to compare the primary outcomes of filled opioid prescriptions and prolonged opioid use following surgery between cohorts. Results A total of 11,703 opioid naïve patients (mean age 72.5 ± 8.5 years, 54.5% female, 87.6% inpatient) were included for analysis. After propensity score matching (n = 1447 inpatients; n = 1447 outpatients), outpatient TSA patients were significantly more likely to fill an opioid prescription in the perioperative window compared to inpatients (82.9% versus 71.5%, p < 0.001). No significant differences in prolonged opioid use were detected (5.74% inpatient versus 6.77% outpatient; p = 0.25). Conclusions Outpatient TSA patients were more likely to fill opioid prescriptions compared to inpatient TSA patients. The quantity of opioids prescribed and rates of prolonged opioid use were similar between the cohorts. Level of evidence Therapeutic Level III.

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Are the Classic and the Congruent Arc Latarjet Procedures Equally Effective for the Treatment of Recurrent Shoulder Instability in Athletes?

The American Journal of Sports Medicine ◽

10.1177/0363546520928343 ◽

2020 ◽

Vol 48 (9) ◽

pp. 2081-2089

Author(s):

Luciano A. Rossi ◽

Ignacio Tanoira ◽

Tomás Gorodischer ◽

Ignacio Pasqualini ◽

Domingo Luis Muscolo ◽

...

Keyword(s):

Functional Outcomes ◽

Bone Block ◽

Return To Sports ◽

Glenohumeral Instability ◽

Level Of Evidence ◽

Significant Difference ◽

Functional Scores ◽

The Mean ◽

Anterior Glenohumeral Instability

Background: There is a lack of evidence in the literature comparing outcomes between the classic and the congruent arc Latarjet procedures in athletes. Purpose: To compare return to sports, functional outcomes, and complications between the classic and the congruent arc Latarjet procedures in athletes with recurrent glenohumeral instability. Study Design: Cohort study; Level of evidence, 3. Methods: Between June 2009 and June 2017, 145 athletes with recurrent anterior glenohumeral instability underwent surgery with the Latarjet as a primary procedure in our institution. The classic procedure was used in 66 patients, and the congruent arc method was used in 79 patients. Return to sports, range of motion (ROM), the Rowe score, a visual analog scale (VAS) for pain in sports activity, and the Athletic Shoulder Outcome Scoring System (ASOSS) were used to assess functional outcomes. Recurrences were also evaluated. The postoperative bone block position and consolidation were assessed with computed tomography. Results: In the total population, the mean follow-up was 41.3 months (range, 24-90 months) and the mean age was 25.3 years (range, 18-45 years). In total, 90% of patients were able to return to sports; of these, 91% returned at their preinjury level of play. No significant difference in shoulder ROM was found between preoperative and postoperative results. The Rowe, VAS, and ASOSS scores showed statistical improvement after operation ( P < .001). The Rowe score increased from a preoperative mean of 42.8 points to a postoperative mean of 95.2 points ( P < .01). Subjective pain during sports improved from 3.2 points preoperatively to 0.7 points at last follow-up ( P < .01). The ASOSS score improved significantly from a preoperative mean of 46.4 points to a postoperative mean of 88.4 points ( P < .01). No significant differences in shoulder ROM and functional scores were found between patients who received the classic vs congruent arc procedures. There were 5 recurrences (3.5%): 3 dislocations (2%) and 2 subluxations (1%). No significant difference in the recurrence rate was noted between groups. The bone block healed in 134 cases (92%). Conclusion: In athletes with recurrent anterior glenohumeral instability, the Latarjet procedure produced excellent functional outcomes. Most athletes returned to sports at their preinjury level, and the rate of recurrence was very low, regardless of whether the patients received surgery with the classic or congruent arc technique.

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Long-Term Radiographic Changes in Stemless Press-Fit Total Shoulder Arthroplasty

Zeitschrift für Orthopädie und Unfallchirurgie ◽

10.1055/a-1079-6549 ◽

2020 ◽

Author(s):

Sascha Beck ◽

Theodor Patsalis ◽

André Busch ◽

Florian Dittrich ◽

Alexander Wegner ◽

...

Keyword(s):

Shoulder Arthroplasty ◽

Proximal Humerus ◽

Total Shoulder Arthroplasty ◽

Stress Shielding ◽

Shoulder Prosthesis ◽

Mild Stress ◽

Press Fit ◽

Radiographic Changes

Abstract Introduction Stemmed humeral implants have represented the gold standard in total shoulder arthroplasty (TSA) for decades. Like many other joints, the latest trends in TSA designs aim at bone preservation. Current studies have demonstrated that native proximal humeral bone stresses are most closely mimicked by stemless implants. Nevertheless, there are concerns about the long-term performance of stemless designs. The aim of the present study was to evaluate the long-term radiographic changes at the proximal humerus in anatomical stemless press-fit TSA. Materials and Methods Between 2008 and 2010, 48 shoulders in 43 patients were resurfaced using an anatomic stemless shoulder prosthesis (TESS, Biomet). Thirty shoulders in twenty-five patients who were aged 65.7 ± 9.9 (34 to 82) years were available for clinical and radiographic review at a mean follow-up of 94.0 ± 8.9 (78 to 110) months. Results Radiographic changes of the proximal humerus due to stress shielding were found in 38.4% of the stemless TESS implants. Mild stress shielding accounted for 80% of the observed radiographic changes. Radiographs exhibited stable fixation of the stemless humeral press-fit implant at early and late follow-up. In contrast, radiolucent lines at the glenoid implant were found in 96.1% of the cases. Irrespective of the degree of radiographic changes, clinical scores (VAS, Quick-DASH, Constant score) significantly improved at follow-up. Conclusions The anatomic stemless press-fit implant seems to be favorable in terms of implant-related stress shielding. Clinical outcome was not affected by radiographic changes, demonstrating an 8-year clinical performance that seems to be comparable to conventional stemmed TSA.

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Predictors of Patient-Reported Function and Pain Outcomes in Operative Ankle Fractures

Foot & Ankle International ◽

10.1177/1071100716688176 ◽

2017 ◽

Vol 38 (5) ◽

pp. 496-501 ◽

Cited By ~ 12

Author(s):

Daniel M. Dean ◽

Bryant S. Ho ◽

Albert Lin ◽

Daniel Fuchs ◽

George Ochenjele ◽

...

Keyword(s):

Risk Factors ◽

Physical Function ◽

Functional Outcomes ◽

Case Series ◽

Ankle Fractures ◽

Level Of Evidence ◽

Patient Reported ◽

Class B ◽

Pain Outcomes

Background: Risk factors associated with short-term functional outcomes in patients with operative ankle fractures have been established. However, no previous studies have reported the association between these risk factors and functional outcomes outside of the first postoperative year. We identified predictors of functional and pain outcomes in patients with operative ankle fractures using the Patient Reported Outcomes Measurement System (PROMIS) physical function (PF) and pain interference (PI) measures. Methods: We retrospectively reviewed a multicenter cohort of patients ≥18 years old who underwent operative management of closed ankle fractures from 2001 to 2013 with a minimum of a 2-year follow-up. Patients with pilon variants, Maisonneuve fractures, Charcot arthropathy, prior ankle surgery, and chronic ankle fractures were excluded. Patients meeting inclusion criteria were contacted and evaluated using the PROMIS PF and PI computerized adaptive tests. Patient demographic and injury characteristics were obtained through a retrospective chart review. Univariate and multivariate regression models were developed to determine independent predictors of physical function and pain at follow-up. Included in this study were 142 patients (64 women, 78 men) with a mean age of 52.7 years (SD = 14.7) averaging 6.3 years of follow-up (range 2-14). Results: Patients had a mean PF of 51.9 (SD = 10.0) and a mean PI of 47.8 (SD = 8.45). Multivariate analysis demonstrated that independent predictors of decreased PF included higher age (B = 0.16, P = .03), higher American Society of Anesthesiologists (ASA) class (B = 10.3, P < .01), and higher body mass index (BMI; B = 0.44, P < .01). Predictors of increased PI included higher ASA class (B = 11.5, P < .01) and lower BMI (B = 0.41, P < .01). Conclusion: At follow-up, increased ASA class, increased BMI, and higher age at time of surgery were independently predictive of decreased physical function. Factors that were associated with increased pain at follow-up include lower BMI and higher ASA class. ASA class had the strongest effect on both physical function and pain. Level of Evidence: Level IV, case series.

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Surgical treatments of patients with periprosthetic humeral fracture and comorbidities

MOJ Orthopedics & Rheumatology ◽

10.15406/mojor.2021.13.00537 ◽

2021 ◽

Vol 13 (1) ◽

pp. 1-4

Author(s):

Jiayong Liu ◽

Logan J Roebke ◽

Josh W Vander Maten ◽

Meaghan Tranovich ◽

Nabil A Ebraheim

Keyword(s):

Shoulder Arthroplasty ◽

Locking Plate ◽

Rare Complication ◽

Case Series ◽

Humeral Fracture ◽

Humeral Fractures ◽

Outcome Analysis ◽

Level Of Evidence ◽

Significant Difference ◽

Cerclage Wiring

Background: Periprosthetic humeral fractures represent a complex and rare complication. Currently, there is no standardized procedure for management or classification of these fractures. Questions/purposes: This unique case series purpose was to look at surgical outcomes and comorbidity profiles of 10 PHF patients. Subsequent analysis looked at whether these outcomes could add to the discussion of a proposed standard of care in a patient cohort with significant comorbidities. Patients and methods: All patients with humeral fractures from 2008-2019 were analyzed for inclusion. A total of ten patients met the inclusion criteria; humeral fracture concurrent with a shoulder arthroplasty. Each patient was managed surgically using a locking plate with or without cerclage wiring. Outcome analysis was then performed for each patient. Humoral fractures managed conservatively were removed from the dataset along with periprosthetic fractures around an elbow arthroplasty, IM nail, or supracondylar fracture after shoulder arthroplasty. Results: The average union time in all patients was 13.27±2.90 (9.86-17.29) weeks. There was no significant difference between patients treated with cerclage wiring or without. All patients had successful union except for a patient with Osteogenesis Imperfecta. There were two radial nerve palsies. The average Deyo-Charlson score and BMI was 7.1±.84 (4-13) and 29.89 respectively. Conclusion: The treatment of PHFs using the technique of ORIF with locking plate with or without cerclage wiring provides satisfactory outcomes in a patient population that usually includes significant comorbidities. Level of evidence: Therapeutic Study Level IV Retrospective Review.

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Bilateral total shoulder arthroplasty: A systematic review of clinical outcomes

Shoulder & Elbow ◽

10.1177/1758573220916822 ◽

2020 ◽

pp. 175857322091682

Author(s):

John-Rudolph H Smith ◽

Darby A Houck ◽

Jessica A Hart ◽

Jonathan T Bravman ◽

Rachel M Frank ◽

...

Keyword(s):

Patient Satisfaction ◽

Clinical Outcomes ◽

Shoulder Arthroplasty ◽

English Language ◽

External Rotation ◽

Total Shoulder Arthroplasty ◽

Cochrane Library ◽

Level Of Evidence ◽

Patient Reported

Background The purpose of this study was to describe the clinical outcomes following bilateral total shoulder arthroplasty (TSA). Methods A systematic search of the PubMed, Embase, and Cochrane Library databases following PRISMA guidelines was performed. English-language literature published from 2010 to 2018 analyzing bilateral TSA (anatomic and/or reverse) with a minimum one-year follow-up was reviewed by two independent reviewers. Study quality was evaluated with the Modified Coleman Methodology Score and the methodological index for non-randomized studies score. Results Eleven studies (1 Level II, 3 Level III, 7 Level IV) with 292 patients were included. Two studies reported on bilateral anatomic TSA ( n = 54), six reported on bilateral reverse TSA (RTSA; n = 168), two reported on anatomic TSA with contralateral RTSA (TSA/RTSA; n = 31), and one compared bilateral anatomic TSA ( n = 26) and bilateral RTSA ( n = 13). Among studies, mean revision rate ranged from 0% to 10.53% and mean complication rate ranged from 4.9% to 31.3%. At final follow-up, patients experienced significant overall improvements in range of motion and patient-reported outcome score measurements. However, bilateral anatomic TSA resulted in greater improvements in external rotation compared to bilateral RTSA. Overall patient satisfaction was 91.0%. Conclusion The available data indicate that bilateral TSA allows for functional and pain improvements and result in high patient satisfaction. Level of evidence IV.

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Arthroscopic-Guided Balloon Tibioplasty in Schatzker III Tibial Plateau Fracture

Joints ◽

10.1055/s-0039-1697607 ◽

2018 ◽

Vol 06 (04) ◽

pp. 220-227 ◽

Cited By ~ 1

Author(s):

Fabrizio Cuzzocrea ◽

Eugenio Jannelli ◽

Alessandro Ivone ◽

Simone Perelli ◽

Alberto Fioruzzi ◽

...

Keyword(s):

Ct Scan ◽

Tibial Plateau ◽

Case Series ◽

Clinical Score ◽

Joint Surface ◽

X Rays ◽

Level Of Evidence ◽

Significant Difference ◽

The Mean

Abstract Purpose The study aims to present the results at a mean 28-months follow-up of arthroscopic-guided balloon tibioplasty and to spot some technical tricks and some practice using tools and materials. Methods The study relates to six patients with tibial plateau fractures type Schatzker III with tibial plateau depression more than 4 mm at preoperative computed tomography scan (CT-scan). The follow-up period ranged from 22 to 33 months, with a mean of 28 months. No patients were lost to follow-up. The patients were evaluated clinically using the Rasmussen score system and Lysholm score systems at 6 to 12 and 24 months, postoperatively. Radiographic evaluations (standard X-rays) were done preoperatively at 1, 3, and 12 months postoperatively while a CT-scan with 3D reconstruction was performed preoperatively, at the first day and 6 months, postoperatively. Results The mean Rasmussen clinical score at 6 months postoperatively was 26.3 while at 1-year postoperatively the mean Rasmussen clinical score was 28.33. At 2-year postoperatively the mean Rasmussen clinical score was 28.83. Statistically significant difference was found in 6-months and 2-years results (p < 0.05). CT-scan achieved the first postoperative day showed the recovery of approximately 70% of the area of the interested tibial plateau, restoring of the joint surface without articular bone free fragments. Conclusion The described surgical procedure, if correctly performed with proper indications (Schatzker III), respect the principles mentioned above and the clinical and radiological results confirm our purpose. Level of Evidence This is a therapeutic case series, level IV study.

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Mid-term results of Eclipse total shoulder arthroplasty

The Bone & Joint Journal ◽

10.1302/0301-620x.104b1.bjj-2021-0869.r2 ◽

2022 ◽

Vol 104-B (1) ◽

pp. 83-90

Author(s):

Timothy J. Batten ◽

Sian Gallacher ◽

Jonathan P. Evans ◽

Richard J. Harding ◽

Jeffrey Kitson ◽

...

Keyword(s):

At Risk ◽

Rotator Cuff ◽

Shoulder Arthroplasty ◽

Radiolucent Line ◽

Total Shoulder Arthroplasty ◽

Independent Study ◽

Consecutive Series ◽

Significant Difference ◽

Mid Term Results

Aims The use and variety of stemless humeral components in anatomical total shoulder arthroplasty (TSA) have proliferated since their advent in 2004. Early outcomes are reassuring but independent mid-term results are scarce. This independent study reports a consecutive series of 143 Eclipse stemless shoulder prostheses with a minimum five-year (5 to 10) follow-up. Methods Outcomes of 143 procedures undertaken for all indications in 131 patients were reviewed, with subset analysis of those for osteoarthritis (OA) (n = 99). The primary outcome was the Oxford Shoulder Score (OSS) at a minimum of five years. Secondary outcomes were ranges of motion and radiological analysis of humeral radiolucency, rotator cuff failure, and glenoid loosening. Results Mean OSS at mean follow-up of 6.67 years (5.0 to 10.74) was 40.12 (9 to 48), with no statistically significant difference between those implanted for a non-OA indication and those for OA (p = 0.056) or time-dependent deterioration between two years and five years (p = 0.206). Ranges of motion significantly improved compared with preoperative findings and were maintained between two and five years with a mean external rotation of 38° (SD 18.1, 0 to 100) and forward elevation of 152° (SD 29.9, 90 to 180). Of those components with radiographs suitable for analysis (n = 83), 23 (28%) were found to have a least one humeral radiolucent line, which were predominantly incomplete, less than 2 mm, and in a single anatomical zone. No humeral components were loose. A radiolucent line was present around 22 (15%) of glenoid components, and 15 (10%) of components had failed. Rotator cuff failure was found in 21 (15%) components. The mean time to either glenoid or rotator cuff failure was greater than three years following implantation. Survivorship was 96.4% (95% CI 91.6 to 98.5, number at risk 128) at five years, and 94.3% (95% CI 88.2 to 97.3, number at risk 76) at seven years, both of which compare favourably with best results taken from available registries. Conclusion Functional and radiological outcomes of the Eclipse stemless TSA are excellent, with no loose humeral components at minimum five-year follow-up. The presence of radiolucent lines is of interest and requires long-term observation but does not impact on the clinical results. Of the eight revisions required, this was predominantly for glenoid and rotator cuff failure. Cite this article: Bone Joint J 2022;104-B(1):83–90.

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Subscapularis Management in Total Shoulder Arthroplasty: Current Evidence Comparing Peel, Osteotomy, and Tenotomy

Journal of Shoulder and Elbow Arthroplasty ◽

10.1177/2471549218807772 ◽

2018 ◽

Vol 2 ◽

pp. 247154921880777 ◽

Cited By ~ 1

Author(s):

Troy D Bornes ◽

Meaghan D Rollins ◽

Peter LC Lapner ◽

Martin J Bouliane

Keyword(s):

Shoulder Arthroplasty ◽

Controlled Trial ◽

Total Shoulder Arthroplasty ◽

Current Evidence ◽

Management Options ◽

Level Of Evidence ◽

Lesser Tuberosity ◽

Optimal Approach ◽

Improved Function ◽

And Function

The optimal approach to management of the subscapularis in total shoulder arthroplasty (TSA) is controversial. Options include the subscapularis tenotomy, lesser tuberosity osteotomy (LTO), and peel. This review provides a summary of subscapularis anatomy and function, outcomes associated with subscapularis management options in TSA, and postoperative subscapularis deficiency. Based on the available literature, LTO appears to result in improved function and subscapularis integrity relative to tenotomy, while peel and LTO have generally led to equivalent outcomes. The highest level of evidence to date is derived from a randomized controlled trial that demonstrated that outcomes following peel and LTO were not significantly different. There is currently a paucity of high-quality evidence as most studies have consisted of small retrospective series with varying outcome measures. Furthermore, the optimal approach to establishing the diagnosis of subscapularis deficiency following TSA is unclear.

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