Faculty Bibliography

PURPOSE: To ascertain whether placing the humeral attachment of the lateral ulnar collateral ligament (LUCL) at the humeral center of rotation (hCOR) on the humerus would provide the most isometric reconstruction. METHODS: We analyzed 13 cadaver limbs from mid-humerus to the hand. The morphology of the ligament complex was assessed. The hCOR was then found using radiographic parameters. We chose 7 points on the humerus located at and around the hCOR and 3 points paralleling the supinator crest of the ulna and then calculated distances from these points using a digital caliper at 0 degrees , 30 degrees , 60 degrees , 90 degrees , and 130 degrees flexion. Differences in potential ligamentous lengths (termed graft elongation) were then calculated and statistical analysis was performed. RESULTS: There was no perfectly isometric point along the humerus or ulna. However, in all specimens the hCOR was the most isometric point for the humeral reconstruction site, with an average graft elongation of 1.1 mm. Differences in humeral tunnel position dramatically affected graft elongation at all 3 ulnar insertions. Overall, ulnar position had a minimal effect on graft elongation. CONCLUSIONS: Although no perfectly isometric points were found, the humeral center of rotation consistently reproduced the most isometry when assessing graft elongation over range of motion. These data may assist surgeons in proper tunnel placement in LUCL reconstruction. CLINICAL RELEVANCE: In LUCL reconstruction, the humeral tunnel should be placed as close as possible to the center of rotation, whereas placement on the ulna is less critical.

PURPOSE: To evaluate whether screening radiographs as part of the initial workup of knee pain impacts clinical decision-making in a sports medicine practice. METHODS: A questionnaire was completed by the attending orthopaedic surgeon following the initial office visit for 499 consecutive patients presenting to the sports medicine centre with a chief complaint of knee pain. The questionnaire documented patient age, duration of symptoms, location of knee pain, associated mechanical symptoms, history of trauma within the past 2 weeks, positive findings on plain radiographs, whether magnetic resonance imaging was ordered, and whether plain radiographs impacted the management decisions for the patient. Patients were excluded if they had prior X-rays, history of malignancy, ongoing pregnancy, constitutional symptoms as well as those patients with prior knee surgery or intra-articular infections. Statistical analyses were then performed to determine which factors were more likely do correspond with diagnostic radiographs. RESULTS: Overall, initial screening radiographs did not change management in 72 % of the patients assessed in the office. The mean age of patients in whom radiographs did change management was 57.9 years compared to 37.1 years in those patients where plain radiograph did not change management (p < 0.0001). Plain radiographs had no impact on clinical management in 97.3 % of patients younger than 40. In patients whom radiographs did change management, radiographs were more likely to influence management if patients were over age forty, had pain for over 6 months, had medial or diffuse pain, or had mechanical symptoms. A basic cost analysis revealed that the cost of a clinically useful radiographic series in a patient under 40 years of age was $7,600, in contrast to $413 for a useful series in patients above the age of 40. CONCLUSION: Data from the current study support the hypothesis that for the younger patient population, routine radiographic imaging as a screening tool may be of little clinical benefit. Factors supporting obtaining screening radiographs include age greater than 40, knee pain for greater than 6 months, the presence of medial or diffuse knee pain, and the presence of mechanical symptoms. LEVEL OF EVIDENCE: II.

SUMMARY: The purpose of our pre-post intervention study was to reduce the number of near-miss events pertaining to wrong-site surgery, including incorrectly sided surgical bookings and incorrectly performed preoperative time-out procedures. Pre- and postintervention, incorrectly booked cases, and improperly performed presurgical time-out procedures were recorded. We then educated each surgeon and their staff regarding the importance of and proper way to perform these tasks. Subsequently, the monthly percentage of incorrectly booked surgical procedures and improperly performed time-outs were significantly decreased. INTRODUCTION: In 2004, the Joint Commission published comprehensive guidelines to prevent wrong-site surgery. Seven years have passed, and the incidence has not declined. The Joint Commission estimates that in the United States, wrong-site procedures including surgeries occur at least 40 times a week. "Near misses" are events that could have harmed a patient, but did not due to chance or mitigation. Improperly performed time-out procedures and inaccurate surgical bookings are considered near misses and could ultimately lead to "never events," such as wrong-site surgery. Near-miss analysis is a highly effective method of preventing rare, "never events." We hypothesize that proper education of surgeons and staff will be effective in reducing the number of near misses. METHODS: All cases analyzed were performed at an academic, orthopedic surgery specialty institution. From August 2010 to May 2011, near misses were identified and stored in Patient Safety Net (PSN), an electronic database. We tracked these cases and educated each offending attending physician and his or her staff about the importance of accurate surgical bookings. Additionally, we began an observational program to carefully review presurgical time-out procedures as they occurred. We tracked the percentage of these improperly performed time-outs and counseled offenders (attending surgeon, or any member of the operating room staff who made the error) regarding the deficiencies that caused the time-out to be ineffective. The number of near misses that occurred before and after the interventions were recorded and analyzed. RESULTS: Of the 12,215 cases included in this study, 6,126 cases formulated the "pre-education" cohort, while a total of 6,089 cases formulated the "post-education" cohort. In the first four months of the study, the monthly rate of incorrectly booked cases was 0.75%. Since the intervention, the rate decreased to 0.41% (p = .0139). The percentage of improperly performed time-out procedures decreased from 18.7% to 5.9% after the educational interventions were performed (p < .0001). CONCLUSION: A program designed to educate physicians to the importance of decreasing near misses for wrong-site surgery is effective. When analyzing the literature, it is clear that the reduction in near misses observed in this study decreases the likelihood of a wrong-site surgery.

PURPOSE: To compare clinical outcomes between transtibial drilling and anteromedial portal techniques for anterior cruciate ligament (ACL) reconstruction using soft-tissue grafts secured with expandable fixation. METHODS: Patients undergoing soft-tissue ACL reconstruction using expandable fixation between 2007 and 2011 were reviewed for inclusion in this study. Revision ACL cases were excluded. All surgeries were performed by 1 of 2 sports medicine fellowship-trained surgeons (T.S.D., K.D.M.). A total of 128 patients (67 comprising transtibial cohort and 61 comprising anteromedial portal cohort) had a minimum of 24 months' follow-up (mean, 27 months) and met the inclusion criteria. The patients were divided into 2 groups based on the method used for creation of the femoral tunnel. At final follow-up, outcomes were assessed with KT-1000 (MEDmetric, San Diego, CA) measurements, as well as International Knee Documentation Committee, Lysholm, and Tegner scores. Data were screened for normality and skew before use of parametric statistics and were transformed if necessary. Data were analyzed by 1-way analysis of variance with post hoc paired comparisons using the Bonferroni approximation. RESULTS: No differences in demographic characteristics were observed between the 2 groups. There was no significant difference in postoperative KT-1000 measurements between the 2 cohorts (1.571 +/- 0.2275 mm in transtibial cohort [n = 35] and 1.246 +/- 0.09249 mm in anteromedial cohort [n = 61], P = .1259). A significant improvement in International Knee Documentation Committee scores was observed in the anteromedial cohort, increasing from 41 +/- 16 to 89 +/- 7.4 (mean +/- SD) (P < .0001). Similar changes were observed for the Lysholm score. There was no significant difference between cohorts for any postoperative scores measured (P > .2). CONCLUSIONS: Our data show comparable KT-1000 measurements for both anteromedial and transtibial femoral drilling techniques when using a soft-tissue graft with expandable fixation. LEVEL OF EVIDENCE: Level IV, therapeutic case series.

Patellar instability is a complex pathoanatomical phenom- enon that requires an intricate understanding in order to properly treat patients. Often, the etiology of this entity is multifactorial, combining a series of physiologic and anatomic variables. A thorough history and physical as well as correct radiographic examinations are critical in both establishing the diagnosis and instituting the correct treatment. Non-operative management of recurrent insta- bility has a high failure rate. Current operative techniques have been shown to be instrumental in correcting anatomic abnormalities, reducing symptoms of instability, and giving patients an appropriate chance of returning to their previous level of activity.

PURPOSE: The purpose of this study was to determine the incidence of venous thromboembolism (VTE) after hip arthroscopy. METHODS: Over the course of 13 months, four surgeons that routinely perform hip arthroscopy participated in a protocol to screen all patients postoperatively for deep venous thrombosis (DVT) using bilateral venous duplex ultrasound at or about the 2 week postoperative time point. All patients were assessed and stratified for VTE risk prior to surgery. Mechanical intraoperative and postoperative chemoprophylaxis were not administered. Perioperative factors, such as weightbearing status after surgery, traction time, and anesthesia type, were recorded. RESULTS: We identified 139 eligible patients (average age 37.7, SD = 12.0) that underwent hip arthroscopy. The incidence of symptomatic VTE was 1.4 percent (2/139). Of the entire patient pool, 81 obtained a follow-up ultrasound. There were no cases of asymptomatic deep vein thrombosis (DVT). There were two symptomatic venous thromboembolic events noted; one DVT and one pulmonary embolus. One patient had no risk factors; the other was overweight and routinely took oral contraceptives. Amongst the patient co- hort, the mean BMI was 25.9 (SD = 4.8). The mean traction time was 58.9 minutes (SD = 23.1). Most patients (71%) were partial weightbearing after the procedure. CONCLUSION AND CLINICAL RELEVANCE: In patients under- going hip arthroscopy, the rate of postoperative VTE was low, despite the use of prolonged axial traction and surgi- cal proximity to the pelvic veins. Although patients should be counseled preoperatively regarding the risk of VTE, we believe that routine use of pharmacologic prophylaxis is not indicated following hip arthroscopy if patients are properly risk stratified prior to surgery and found to be at low risk for VTE.

Traumatic injuries of the hand and fingers may be devastating and can result in irreversible functional and psychological problems in individuals who sustain them. They occur in all age groups, ranging from the elderly to young children. The management of these injuries can be challenging and onerous. As a result, it is imperative that the surgeon be both knowledgeable and meticulous in order to afford the best possible outcomes. This review focuses on the anatomy, initial evaluation, and acute management of these injuries. A variety of treatment algorithms are discussed as well, including primary closure, grafting, commonly utilized flaps, and replantation.

Ice hockey is a fast paced sport with unique injury potential. A covering physician must be prepared to acutely manage injuries to the face, neck, and chest that are not common in orthopedic practice. Injuries about the face seen in ice hockey include facial fractures, lacerations, and eye and dental injuries. Neck trauma can result in lacerations and neurologic injury. Commotio cordis and sudden cardiac death are potentially fatal conditions seen in ice hockey. This review details the appropriate acute management of these conditions for the physician covering an ice hockey game. Knowledge of these conditions and appropriate rink-side management can be potentially life-saving.