Jennifer Moriatis Wolf

Influence of comorbidity on self-assessment instrument scores of patients with idiopathic adhesive capsulitis.

Background: The purpose of this study was to determine whether comorbid factors influence the results of self-assessment instruments completed by patients with idiopathic adhesive capsulitis of the shoulder. We hypothesized that an increased number of comorbidities would be correlated with greater pain and worse function as measured by general and shoulder-specific outcome tools. Methods: One hundred consecutive patients with phase-II adhesive capsulitis were prospectively evaluated with use of a general health questionnaire, a visual analog pain scale, the Simple Shoulder Test, the Disabilities of the Arm, Shoulder and Hand questionnaire, and the Short Form-36. There were seventy-one women and twenty-nine men, with a mean age of fifty-two years (range, thirty-six to eighty-two years). Comorbidities included medical factors (e.g., diabetes and heart disease) and social factors (e.g., tobacco use and pending litigation). Linear regression analysis was performed to determine correlations between the number of comorbidities and the results of the questionnaires. Results: Patients with more comorbidities had significantly lower scores on the Disabilities of the Arm, Shoulder and Hand Questionnaire (p = 0.0005) and the Short Form-36 subscale of physical function (p = 0.0009) as well as poorer scores on the Simple Shoulder Test and the Short Form-36 subscales of physical role, social function, emotional role, and mental health. Although there was no correlation between increased comorbidity and pain as measured on the visual analog scale, the comfort/pain subscale of the Short Form-36 showed a significant correlation with increased comorbidity (p = 0.004). Conclusions: Idiopathic adhesive capsulitis is a debilitating condition. Comorbid factors have a significant effect on the pain and dysfunction (as measured on shoulder-specific and general health instruments) experienced by patients with this disorder. These findings can be applied to the evaluation of these patients and may help to identify patients who potentially require a longer treatment course or those whose outcome will be less satisfactory.

The impact of ursodeoxycholic acid on cancer, dysplasia and mortality in ulcerative colitis patients with primary sclerosing cholangitis

Background : Colorectal cancer in primary sclerosing cholangitis patients with ulcerative colitis is mostly right‐sided where concentrations of carcinogenic secondary bile acids are highest.

Epidemiology of Major League Baseball Injuries

Background Little is known about the injury rates in Major League Baseball (MLB) players, as a formal injury surveillance system does not exist. The goal of this study was to characterize the epidemiology of MLB injuries over a 7-year period. Hypothesis Injuries in MLB would be common. Study Design Descriptive epidemiologic study. Methods The authors analyzed the MLB disabled list data from 2002 through 2008. Injuries were analyzed for differences between seasons, as well as during seasons on a monthly basis. The injuries were categorized by major anatomic zones and then further stratified based on injury type. Position-specific subanalyses for pitcher and position players were performed. Results From the 2002 season through the 2008 season, an average of 438.9 players per year were placed on the disabled list, for a rate of 3.61 per 1000 athlete-exposures. There was a significant 37% increase in injuries between 2005 and 2008. The highest injury rate during the season was during the month of April (5.73/1000 exposures) and the lowest in September (0.54/1000 exposures). No differences were noted in the injury rates between the National League and the American League (incidence rate ratio [IRR] = 1.06; 95% confidence interval [CI] = 0.98, 1.15). Pitchers experienced 34% higher incidence rates for injury compared with fielders during the study period (IRR = 1.34; 95% CI = 1.25, 1.44). Among all player injuries, upper extremity injuries accounted for 51.4% while lower extremity injuries accounted for 30.6%. Injuries to the spine and core musculature accounted for 11.7% while other injuries and illnesses were 6.3% of the total disabled list entries. There was a significant association between position played and anatomic region injured (P < .001), with pitchers experiencing a significantly greater proportion of injuries to the upper extremity (67.0%; 95% CI = 63.1%, 70.9%) compared with fielders (32.1%; 95% CI = 29.1%, 35.1%). Conversely, fielders experienced a significantly greater proportion of injuries to the lower extremity (47.5%; 95% CI = 43.8%, 51.1%) compared with pitchers (16.9%; 95% CI = 14.9%, 18.8%). The mean number of days on the disabled list was 56.6. Overall, a greater proportion of disability days were experienced by pitchers (62.4%; 95% CI = 62.0%, 62.8%; P < .001) compared with fielders (37.6%; 95% CI = 37.3%, 37.9%). Conclusion Injuries in MLB resulting in disabled list designation are common. Upper extremity injuries were predominant in pitchers, while lower extremity injuries are more common in position players. These data may be used in the development of a formal MLB injury database, as well as in the development and implementation of specific preseason training and in-season conditioning for injury prevention.

Surgical Trends in Bankart Repair An Analysis of Data From the American Board of Orthopaedic Surgery Certification Examination

Background: Arthroscopic Bankart repair emerged in the 1990s as a minimally invasive alternative to open repair. The optimal technique of surgical stabilization of the unstable glenohumeral joint remains controversial. Hypothesis: A review of the American Board of Orthopaedic Surgery (ABOS) data would show a trend toward an increasing number of arthroscopic versus open Bankart procedures. Study Design: Descriptive epidemiology study. Methods: A query of the ABOS database for all cases of open or arthroscopic Bankart repair from 2003 through 2008 was performed, as the CPT (Current Procedural Terminology) codes for arthroscopic repair were introduced in 2003. All cases coded with CPT codes for arthroscopic Bankart repair (29806) or open Bankart repair (23455) were reviewed. Additional data were obtained on the surgeons (year of procedure, geographic location, fellowship training, subspecialty examination area) as well as the patients (age, gender, follow-up length, complications, objective outcome measures [pain, deformity, function, and satisfaction]). Results: From 2003 to 2008, a total of 4562 Bankart repair cases were reported, composing 8.6% of the total number of shoulder surgery cases in the ABOS database. From 2003 to 2005, 71.2% of Bankart repairs were arthroscopic, compared with 87.7% between 2006 and 2008 (P < .0001). Surgeons having obtained subspecialty training in sports medicine performed the majority (65.3%) of Bankart repairs. Over the entire period, sports-trained surgeons also performed a higher proportion of arthroscopic repairs (84.1%) compared with surgeons without this training (71.9%) (P < .0001). However, by 2008 both non-fellowship–trained and sports medicine fellowship–trained surgeons performed arthroscopic repair in 90% of cases. Surgeons in the Northeast region performed a significantly greater proportion of arthroscopic Bankart repairs (84.7%) than did surgeons in other regions (78.6%) (P < .0001) from 2003 to 2008. The most commonly reported complications were nerve palsy/injury and dislocation, with a rate of nerve injury of 2.2% in the open group compared to 0.3% in the arthroscopic group (P < .0001), and dislocation rate of 1.2% with open stabilization compared with 0.4% arthroscopically (P = .0039). Conclusion: Review of the ABOS data shows a trend toward arthroscopic shoulder stabilization over time, with the use of open repair declining. Reported complications were lower overall in the arthroscopic stabilization group when compared with open surgeries.

Incidence of elbow dislocations in the United States population.

BACKGROUND There is minimal published information regarding the epidemiology of simple elbow dislocations. The purpose of this study was to report the estimated incidence of elbow dislocations in the United States, with use of the National Electronic Injury Surveillance System (NEISS) database. METHODS The NEISS database includes 102 hospitals representing a random sampling of all patients presenting to U.S. emergency departments. The database was queried for elbow dislocation events. NEISS data for 2002 through 2006 were used for raw data and weighted injury counts. Incidence rates with 95% confidence intervals (95% CI) were calculated by age group and sex, with use of U.S. census data. RESULTS One thousand and sixty-six elbow dislocations were identified, representing a weighted estimate of 36,751 acute dislocations nationwide. A calculated incidence of 5.21 dislocations per 100,000 person-years (95% CI, 4.74 to 5.68) was noted. The highest incidence of elbow dislocations (43.5%) occurred in those who were ten to nineteen years old (6.87 per 100,000 person-years; 95% CI, 5.97 to 7.76). The incidence rate ratio for the comparison of dislocations in males with those in females was 1.02 (5.26 per 100,000 for males and 5.16 per 100,000 for females). In patients ten years or older, 474 injuries (44.5% of total dislocations) were sustained in sports. Males dislocated elbows in football, wrestling, and basketball. Females sustained elbow dislocations most frequently in gymnastics and skating activities. CONCLUSIONS The estimated incidence of elbow dislocations in the U.S. population is 5.21 per 100,000 person-years, with use of a national database. Adolescent males are at highest risk for dislocation. Nearly half of acute elbow dislocations occurred in sports, with males at highest risk with football, and females at risk with gymnastics and skating activities.

Current Trends in Nonoperative and Operative Treatment of Trapeziometacarpal Osteoarthritis: A Survey of US Hand Surgeons

PURPOSE Multiple procedures have been described for trapeziometacarpal (TM) osteoarthritis with varying levels of evidence support. The purpose of this study was to evaluate current trends in the treatment of TM arthritis by surveying active members of the American Society for Surgery of the Hand. METHODS We sent an online questionnaire to the e-mail addresses of 2,326 active members of the American Society for Surgery of the Hand, consisting of 5 treatment and 2 demographic questions. Surgeons were contacted twice by e-mail and provided with a link to a de-identified online survey. We performed statistical analysis of correlations between demographics and treatment preferences using chi-square testing. RESULTS We received responses from 1,156 out of 2,326 hand surgeons, a response rate of 50%. The vast majority of surgeons use corticosteroid injections for TM arthritis, and 719 out of 1,156 perform trapeziectomy with ligament reconstruction and tendon interposition (LRTI) for common Eaton stage III arthritis. For scaphotrapeziotrapezoid (STT) arthritis, approximately half of respondents also perform trapeziectomy/LRTI, followed by STT fusion. For a younger woman with minimal radiographic change and pain, 535 out of 1,142 surgeon respondents would advocate continued conservative treatment, whereas the remainder chose Eaton ligament reconstruction, arthroscopy, and metacarpal osteotomy. CONCLUSIONS This survey study presents the current opinions of a group of hand surgeons who responded to an online questionnaire regarding treatment of TM arthritis. The results show that trapeziectomy/LRTI is the treatment of choice by most respondents. The use of trapeziectomy/LRTI in the treatment of STT arthritis has not been studied in depth, but this procedure was chosen by half the respondents. The process of choosing treatment strategies is a question for future study. TYPE OF STUDY/LEVEL OF EVIDENCE Prognostic IV.

Incidence of de Quervain's Tenosynovitis in a Young, Active Population

PURPOSE De Quervains tenosynovitis is thought to occur most frequently in women, with presentation of pain and swelling in the first dorsal extensor sheath. The epidemiology of this extensor tendinitis is not well described. We evaluated the incidence and demographic risk factors for de Quervains tenosynovitis using a large database of military personnel. METHODS The Defense Medical Epidemiology Database (DMED) collects International Classification of Diseases, 9th Revision, and Clinical Modification (ICD-9-CM) coding information for every patient encounter occurring for United States military personnel. We queried the DMED system by race, gender, military service, rank, and age for the years 1998-2006 using the ICD-9 code 727.04, limiting data to first presentations. Multivariate Poisson regression was used to estimate the rate of de Quervains tenosynovitis per 1000 person-years, as well as incidence rate ratios and 95% confidence intervals. RESULTS There were 11,332 cases of de Quervains tenosynovitis in the population at risk of 12,117,749 person-years. Women had a significantly higher rate of de Quervains tenosynovitis at 2.8 cases per 1000 person-years, compared to men at 0.6 per 1000 person-years. Age greater than 40 was also a significant risk factor, with this age category showing a rate of 2.0 per 1000 person-years compared to 0.6 per 1000 in personnel under 20 years. There was also a racial difference, with blacks affected at 1.3 per 1000 person-years compared to whites at 0.8. CONCLUSIONS In analysis of a large population, we have described the epidemiology of stenosing tenosynovitis of the first extensor compartment. Risk factors for de Quervains in our population include female gender, age greater than 40, and black race. TYPE OF STUDY/LEVEL OF EVIDENCE Prognostic II.

Impact of Joint Laxity and Hypermobility on the Musculoskeletal System

Abstract Excessive joint laxity, or hypermobility, is a common finding of clinical importance in the management of musculoskeletal conditions. Hypermobility is common in young patients and in general is associated with an increased incidence of musculoskeletal injury. Hypermobility has been implicated in ankle sprains, anterior cruciate ligament injury, shoulder instability, and osteoarthritis of the hand. Patients with hypermobility and musculoskeletal injuries often seek care for diffuse musculoskeletal pain and injuries with no specific inciting event. Orthopaedic surgeons and other healthcare providers should be aware of the underlying relationship between hypermobility and musculoskeletal injury to avoid unnecessary diagnostic tests and inappropriate management. Prolonged therapy and general conditioning are typically required, with special emphasis on improving strength and proprioception to address symptoms and prevent future injury. Orthopaedic surgeons must recognize the implications of joint mobility syndromes in the management and rehabilitation of several musculoskeletal injuries and orthopaedic disorders.

Orthopaedic resident and program director opinions of resident duty hours: a national survey.

BACKGROUND The Accreditation Council for Graduate Medical Education (ACGME) established national guidelines for resident duty hours in July 2003. Following an Institute of Medicine report in December 2008, the ACGME recommended further restrictions on resident duty hours that went into effect in July 2011. We conducted a national survey to assess the opinions of orthopaedic residents and of directors of residency and fellowship programs in the U.S. regarding the 2003 and 2011 ACGME resident duty-hour regulations and the effects of these regulations on resident education and patient care. METHODS A fifteen-item questionnaire was electronically distributed by the Candidate, Resident, and Fellow Committee of the American Academy of Orthopaedic Surgeons (AAOS) to all U.S. orthopaedic residents (n = 3860) and directors of residency programs (n = 184) and fellowship programs (n = 496) between January and April 2011. Thirty-four percent (1314) of the residents and 27% (185) of the program directors completed the questionnaire. Statistical analyses were performed to detect differences between the responses of residents and program directors and between the responses of junior and senior residents. RESULTS The responses of orthopaedic residents and program directors differed significantly (p < 0.001) for fourteen of the fifteen survey items. The responses of residents and program directors were divergent for questions regarding the 2003 rules. Overall, 71% of residents thought that the eighty-hour work week was appropriate, whereas only 38% of program directors agreed (p < 0.001). Most program directors (70%) did not think that the 2003 duty-hour rules had improved patient care, whereas only 24% of residents responded in the same way (p < 0.001). The responses of residents and program directors to questions regarding the 2011 duty-hour rules were generally compatible, but the degree to which they perceived the issues was different. Only 18% of residents and 19% of program directors thought that the suggested strategic five-hour evening rest period implemented in July 2011 for on-call residents was appropriate (p > 0.05), and both groups (84% of residents and 74% of program directors) also disagreed with the limitation of intern shifts to sixteen hours (p < 0.001). Seventy percent of residents and 79% of program directors thought that the new duty-hour regulations would result in an increased number of handoffs that would be detrimental to patient care (p < 0.001). The mean responses of junior residents and senior residents differed for eight of the fifteen survey items (p < 0.001), with the responses of senior residents more closely resembling those of program directors on six of these eight questions. The mean responses and percentiles for the survey items did not differ significantly between residency directors and fellowship directors (p > 0.05). CONCLUSIONS This national survey indicated significant differences between the opinions of orthopaedic residents and program (residency and fellowship) directors regarding the 2003 ACGME resident duty-hour regulations and the effects of these regulations on resident education and patient care. However, both residents and program directors agreed that the further reductions in duty hours in the 2011 rules may be detrimental to resident education and patient care.

Incidence estimates and demographics of scaphoid fracture in the U.S. population.

PURPOSE The epidemiology of scaphoid fracture is based mostly on retrospective analyses of small population centers. The purpose of this study was to determine the incidence of scaphoid fractures in a large national population database. METHODS The National Electronic Injury Surveillance System (NEISS) is a representative sample of patients that is weighted to provide estimates of various injuries in the United States presenting to emergency rooms. Data on wrist fractures obtained from NEISS were used to estimate the incidence of scaphoid fractures in the United States between 2002 and 2006. We could not distinguish true scaphoid fractures from suspected scaphoid fractures. Demographics, location, mechanism, and sports participation were also recorded. RESULTS A total of 507 injuries coded as fractures of the scaphoid were identified in the database from 2002 to 2006. According to the methodology of the NEISS sample, this corresponds to an estimated 21,481 scaphoid fractures among 909,309 total wrist fractures nationwide (2.4%) and an estimated incidence of scaphoid fractures of 1.47 fractures per 100,000 person-years (95% confidence interval, 1.31-1.63). CONCLUSIONS The estimated incidence of scaphoid fractures using U.S. census data is an order of magnitude less than the estimates in prior studies. If the data represent both suspected and true fractures, the incidence of true scaphoid fractures is likely an order of magnitude less than our estimates. Young males and persons between 10 and 19 years of age are at highest risk for scaphoid fracture.