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Dive into the research topics where John-Erik Bell is active.

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Featured researches published by John-Erik Bell.


Journal of Bone and Joint Surgery, American Volume | 2011

Trends and Variation in Incidence, Surgical Treatment, and Repeat Surgery of Proximal Humeral Fractures in the Elderly

John-Erik Bell; Brian Leung; Kevin F. Spratt; Ken J. Koval; James D. Weinstein; David C. Goodman; Anna Tosteson

BACKGROUND the treatment of proximal humeral fractures in the elderly remains controversial. Options include nonoperative treatment, open reduction with internal fixation (ORIF), and hemiarthroplasty. Locking plate technology has expanded the indications for ORIF for certain fracture types in osteoporotic bone. This study was performed to characterize the incidence, treatment, and revision surgery of proximal humeral fractures according to geographic region both before (1999 to 2000) and after (2004 to 2005) the introduction of locking plates. METHODS we used a 20% sample of Medicare Part-B data and the Medicare denominator file for the years 1998 to 2006. Proximal humeral fractures were identified by Common Procedural Terminology codes for treatment, categorized as nonoperative, ORIF, or hemiarthroplasty. Geographic variation in treatment type was determined with use of 306 hospital referral regions. Odds ratios for revision surgery were calculated by the need for repeat surgery within one year of the index procedure. Rates were adjusted for age, sex, race, and comorbidities. RESULTS there were 14,774 proximal humeral fractures in the 20% sample from 1999 to 2000 (an estimated total of 73,870 fractures) and 16,138 fractures in the sample from 2004 to 2005 (an estimated total of 80,690 fractures). The overall age, sex, and race-adjusted incidence of proximal humeral fractures was unchanged from 1999 to 2005 (2.47 vs. 2.48 per 1000 Medicare beneficiaries; p = 0.992). However, the absolute rate of surgically managed proximal humeral fractures rose 3.2 percentage points from 12.5% to 15.7%, a relative increase of 25.6% (p < 0.0001). The relative increase in the percentage of fractures treated with ORIF was 28.5% (p < 0.0001), while the percentage of fractures treated with hemiarthroplasty increased 19.6% (p < 0.0001). There were large regional variations in the proportion treated surgically (range, 0% to 68.18%). The rates of repeat surgery were significantly higher in 2004 to 2005 compared with 1999 to 2000 (odds ratio = 1.47, p = 0.043). CONCLUSIONS although the incidence of proximal humeral fractures in the elderly did not change from 1999 to 2005, the rate of surgical treatment increased significantly. The marked regional variation in the rates of surgical treatment highlights the need for better consensus regarding optimal treatment of proximal humeral fractures. Additional research is needed to help to determine which fractures are best treated operatively in order to maximize outcome and minimize the need for revision surgery. LEVEL OF EVIDENCE therapeutic Level II. See Instructions to Authors for a complete description of levels of evidence.


American Journal of Sports Medicine | 2010

Nonoperative Treatment of Superior Labrum Anterior Posterior Tears Improvements in Pain, Function, and Quality of Life

Sara L. Edwards; Jessica Lee; John-Erik Bell; Jonathan D. Packer; Christopher S. Ahmad; William N. Levine; Louis U. Bigliani; Theodore Blaine

Background: Although there are multiple reports documenting successful outcomes with operative treatment of superior labrum anterior posterior (SLAP) tears, there are few reports on the results of nonoperative treatment. Hypothesis: Nonoperative treatment of SLAP tears will result in improved outcomes over pretreatment values using validated, patient-derived outcome instruments. Study Design: Case series; Level of evidence, 4. Methods: A total of 371 patients with a diagnosis of labral tear at our institution were mailed a questionnaire that included the following validated, patient-derived outcome assessment instruments: Short Form 36 (SF-36), European Quality of Life measure (EuroQol), visual analog pain scale (VAS), American Shoulder and Elbow Surgeons (ASES) score, and simple shoulder test (SST). Sixty-six surveys did not reach the patients because of incorrect addresses, and 50 surveys were returned, for a 16.4% (50 of 305) response rate. Of the patients with a clinically documented SLAP lesion (positive O’Brien test, pain at the bicipital groove, and positive magnetic resonance imaging) and sufficient follow-up data (minimum 1 year), 39 patients who met the criteria returned the survey and 19 had nonoperative treatment. Twenty patients (51%) from the overall surveyed group were considered nonoperative treatment failures and had arthroscopic surgical reconstruction. Nonoperative treatment consisted of nonsteroidal anti-inflammatory drugs and a physical therapy protocol focused on scapular stabilization exercises and posterior capsular stretching. Statistical analysis was performed using the paired t test; values of P < .05 were considered significant. Results: At an average follow-up of 3.1 years, function improved significantly (ASES function 30.8 to 45.0 [P < .001]; ASES total 58.5 to 84.7 [P = .001], SST 8.3 to 11.0 [P = .02]) in those patients with successful nonoperative treatment. Quality of life also improved after treatment (EuroQol 0.76 to 0.89, P = .009). Pain relief was significant, as VAS pain scores decreased from 4.5 to 2.1 (P = .043). All patients with successful nonoperative treatment returned to sports. Seventy-one percent of all athletes were able to return to preparticipation levels, but only 66% of overhead athletes returned to their sport at the same or higher level. Conclusion: Using validated, patient-derived outcome instruments, the present study shows that successful nonoperative treatment of superior labral tears results in improved pain relief and functional outcomes compared with pretreatment assessments. Although 20 patients (51%) in this group elected surgery and may be considered nonoperative treatment failures, those patients with successful nonoperative treatment had significant improvements in pain, function, and quality of life. Return to sports was comparable with patients with successful surgical treatment, although return to overhead sports at the same level was difficult to achieve (66%). Based on these findings, a trial of nonoperative treatment may be considered in patients with the diagnosis of isolated superior labral tear. In overhead athletes and in those patients where pain relief and functional improvement is not achieved, surgical treatment should be considered.


Journal of Bone and Joint Surgery, American Volume | 2012

The Cost-Effectiveness of Single-Row Compared with Double-Row Arthroscopic Rotator Cuff Repair

James W. Genuario; Ryan Patrick Donegan; Daniel Hamman; John-Erik Bell; Martin Boublik; Theodore Schlegel; Anna N.A. Tosteson

BACKGROUND Interest in double-row techniques for arthroscopic rotator cuff repair has increased over the last several years, presumably because of a combination of literature demonstrating superior biomechanical characteristics and recent improvements in instrumentation and technique. As a result of the increasing focus on value-based health-care delivery, orthopaedic surgeons must understand the cost implications of this practice. The purpose of this study was to examine the cost-effectiveness of double-row arthroscopic rotator cuff repair compared with traditional single-row repair. METHODS A decision-analytic model was constructed to assess the cost-effectiveness of double-row arthroscopic rotator cuff repair compared with single-row repair on the basis of the cost per quality-adjusted life year gained. Two cohorts of patients (one with a tear of <3 cm and the other with a tear of ≥3 cm) were evaluated. Probabilities for retear and persistent symptoms, health utilities for the particular health states, and the direct costs for rotator cuff repair were derived from the orthopaedic literature and institutional data. RESULTS The incremental cost-effectiveness ratio for double-row compared with single-row arthroscopic rotator cuff repair was


Journal of Shoulder and Elbow Surgery | 2013

Reverse shoulder arthroplasty for treatment of proximal humeral fractures in older adults: a systematic review

Ana Mata-Fink; Mary Meinke; Charlene I. Jones; Bokyung Kim; John-Erik Bell

571,500 for rotator cuff tears of <3 cm and


Journal of Shoulder and Elbow Surgery | 2012

The cost-effectiveness of reverse total shoulder arthroplasty compared with hemiarthroplasty for rotator cuff tear arthropathy

Marcus P. Coe; R. Michael Greiwe; Rohan Joshi; Benjamin M. Snyder; Lauren Simpson; Anna Tosteson; Christopher S. Ahmad; William N. Levine; John-Erik Bell

460,200 for rotator cuff tears of ≥3 cm. The rate of radiographic or symptomatic retear alone did not influence cost-effectiveness results. If the increase in the cost of double-row repair was less than


JAMA Internal Medicine | 2016

Patterns of Prescription Drug Use Before and After Fragility Fracture

Jeffrey C. Munson; Julie P. W. Bynum; John-Erik Bell; Robert V. Cantu; Christine M. McDonough; Qianfei Wang; Tor D. Tosteson; Anna N. A. Tosteson

287 for small or moderate tears and less than


Journal of the American Geriatrics Society | 2013

Quality of Osteoporosis Care of Older Medicare Recipients with Fragility Fractures: 2006 to 2010

Stephen K. Liu; Jeffrey C. Munson; John-Erik Bell; Rebecca Zaha; John N. Mecchella; Anna N. A. Tosteson; Nancy E. Morden

352 for large or massive tears compared with the cost of single-row repair, then double-row repair would represent a cost-effective surgical alternative. CONCLUSIONS On the basis of currently available data, double-row rotator cuff repair is not cost-effective for any size rotator cuff tears. However, variability in the values for costs and probability of retear can have a profound effect on the results of the model and may create an environment in which double-row repair becomes the more cost-effective surgical option. The identification of the threshold values in this study may help surgeons to determine the most cost-effective treatment.


Orthopedic Clinics of North America | 2010

Arthroscopic Management of Multidirectional Instability

John-Erik Bell

BACKGROUND Displaced proximal humeral fractures have traditionally been treated with hemiarthroplasty in older adults, but sometimes hemiarthroplasty results in poor functional outcomes due to rotator cuff deficiency. Reverse shoulder arthroplasty (RSA) can offer potentially improved outcomes in these situations. We assessed the functional outcomes of older adults treated with RSA for proximal humeral fractures compared with hemiarthroplasty. METHODS We searched MEDLINE, the Cochrane Central Register of Controlled Trials, EMBASE, and 3 clinical trials registries. We included all studies treating proximal humeral fractures with RSA in adults with a mean age older than 60 years and 1 year of follow-up. We calculated weighted mean differences (WMD) for range of motion and standardized mean differences (SMD) for shoulder scores. Postoperative complications were evaluated qualitatively. RESULTS Fifteen studies met inclusion criteria, including 377 patients treated with RSA and 504 patients treated with hemiarthroplasty. In controlled studies, the RSA group had improved forward flexion (WMD, 21°;, P = .02) and functional outcome scores (SMD, 0.44; P = .005) compared with the hemiarthroplasty group but decreased external rotation (WMD, -5°; P < .0001). Postoperative complications were similar between the 2 groups. CONCLUSION RSA results in improved forward flexion and functional outcome scores compared with hemiarthroplasty for older adults with proximal humeral fractures. Complications do not appear to be appreciably higher in the RSA group in the existing follow-up. The results of this review suggest that RSA is a reasonable alternative for treating older adults with proximal humeral fractures, but more research and longer follow-up are needed. LEVEL OF EVIDENCE Level IV, systematic review.


Journal of Orthopaedic Research | 2017

Analysis of polyethylene wear of reverse shoulder components: A validated technique and initial clinical results.

Kathleen A. Lewicki; John-Erik Bell; Douglas W. Van Citters

BACKGROUND Hemiarthroplasty (humeral head replacement [HHR]) and reverse shoulder arthroplasty (RSA) are surgical options for cuff tear arthropathy (CTA). RSA may provide better pain relief and functional outcomes, but it costs more and may have a higher complication rate. The goal of this study was to compare the cost-effectiveness of these two treatments and to use sensitivity analysis to determine the drivers of the model. MATERIALS AND METHODS A Markov decision model was used. Outcome and complication probabilities were obtained from existing literature. Costs were based on average Medicare reimbursement and implant prices. Utilities were derived from responses to health state surveys (Short Form 6D) from 31 patients at one institution who underwent RSA or HHR for CTA. Incremental cost-effectiveness ratios were used to compare treatments. RESULTS Our model showed RSA could be a cost-effective strategy for treatment of CTA, using


Expert Review of Medical Devices | 2014

Use of the spider limb positioner in oncologic lower extremity surgery

Eric R. Henderson; Brandon Prioreschi; Ana Mata-Fink; John-Erik Bell

100,000 per quality-adjusted life-year gained as a cutoff and the Short Form 6D for utilities. The model was extremely sensitive to the complication rate and the utility of each procedure and was also sensitive to implant price, with an implant price <

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Christopher S. Ahmad

Columbia University Medical Center

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Jeffrey C. Munson

University of Pennsylvania

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Anna N.A. Tosteson

The Dartmouth Institute for Health Policy and Clinical Practice

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