Low-Dose Enteric-Coated and Chewable Aspirin Are Not Equally Effective in Preventing Venous Thromboembolism in Total Knee and Hip Arthroplasty.

BACKGROUND: Low-dose aspirin is an effective venous thromboembolism (VTE) prophylactic medication in primary total joint arthroplasty, but the efficacy and safety of the formulations of chewable and enteric-coated aspirin have not been compared. The purpose of this study was to investigate the VTE and gastrointestinal (GI) complication rates of chewable and enteric-coated 81 mg aspirin bis in die for VTE prophylaxis in primary total joint arthroplasty. METHODS: A retrospective, single-institution cohort study was performed on patients who underwent primary total hip arthroplasty (THA) and total knee arthroplasty (TKA) from 2017 to 2021. Comparisons were made between 4,844 patients who received chewable, noncoated aspirin 81 mg and 4,388 patients who received enteric-coated 81 mg aspirin. Power analysis demonstrated 1,978 and 3,686 patients were needed per group to achieve a power of 80% for 90-day VTE rates (using inferiority testing) and GI complications (using superiority testing), respectively. Patients had similar baseline characteristics. Statistical analyses were done using t-tests and Chi-squared tests, with statistical significance defined as a P value < .05. RESULTS: There were no significant differences in the incidences of postoperative VTE (0.31% versus 0.55%; P = .111) or GI complications (0.14% versus 0.14%; P = 1.000) between patients who received either chewable or enteric-coated 81 mg aspirin bis in die in the overall comparison that included both THA and TKA patients combined, or THA patients alone. However, the VTE incidence for TKA patients alone was significantly lower with chewable than enteric-coated aspirin (0.22% versus 0.62%; P = .037), with no difference in GI complications (0.13% versus 0.19%; P = .277). CONCLUSIONS: Low-dose aspirin in enteric-coated formulation is inferior to chewable aspirin for VTE prophylaxis in primary TKA, but not inferior in THA patients. Both formulations have a similar GI complication rate. Therefore, it is reasonable to consider a transition from enteric-coated to uncoated chewable low-dose aspirin.

Joint line position change in primary total knee arthroplasty: a radiographic analysis comparing conventional and robotic techniques.

PURPOSE: Joint line (JL) position change in total knee arthroplasty (TKA) may alter knee biomechanics and impact function. The purpose of this study was to compare the change in JL position between robotic-assisted TKA (RA-TKA) and conventional TKA (C-TKA). METHODS: A retrospective, radiographic analysis was conducted of patients who underwent RA-TKA and C-TKA to compare JL position change. JL position was measured in consecutive RA-TKAs and C-TKAs performed by four fellowship-trained arthroplasty surgeons. Statistical analysis was done utilizing t-tests and Mann Whitney U tests, with statistical significance being defined as a p value < 0.05. RESULTS: Six hundred total RA-TKAs and 400 total C-TKAs were included in the analysis. There were no significant differences in patient baseline characteristics such as body mass index, range of motion, and tibiofemoral coronal alignment. RA-TKAs were associated with an average of 0.04 (2.2) mm JL position change, and C-TKAs were associated with an average 0.5 (3.2) mm JL position change (p = 0.030). There were inter-surgeon differences when comparing the change in JL position for RA-TKAs and C-TKAs between the four participating surgeons. CONCLUSION: RA-TKA leads to better preservation of the JL position than C-TKA, and this seems to be dependent on the arthroplasty surgeon's preferences and techniques during TKA. Whether this statistically significant difference is clinically relevant needs to be further investigated.

The Appropriateness of Preoperative Patient Reported Outcome Measures as an Indication for Total Hip Arthroplasty.

BACKGROUND: While Medicare requires patient-reported outcome measures (PROMs) for many quality programs, some commercial insurers have begun requiring preoperative PROMs when determining patient eligibility for total hip arthroplasty (THA). Concerns exist these data may be used to deny THA to patients above a specific PROM score, but the optimal threshold is unknown. We aimed to evaluate outcomes following THA based on theoretical PROM thresholds. METHODS: We retrospectively analyzed 18,006 consecutive primary THA patients from 2016-2019. Hypothesized preoperative Hip Disability and Osteoarthritis Outcome Score, Joint Replacement (HOOS-JR) cutoffs of 40, 50, 60, and 70 points were used. Preoperative scores below each threshold were considered "approved" surgery. Preoperative scores above each threshold were considered "denied" surgery. In-hospital complications, 90-day readmissions, and discharge disposition were evaluated. HOOS-JR scores were collected preoperatively and 1-year postoperatively. Minimum clinically important difference (MCID) achievement was calculated using previously validated anchor-based methods. RESULTS: Using preoperative HOOS-JR thresholds of 40, 50, 60, and 70 points, the percentage of patients who would have been denied surgery was 70.4%, 43.2%, 20.3%, and 8.3%, respectively. For these denied patients, 1-year MCID achievement was 75.9%, 69.0%, 59.1%, and 42.1%, respectively. In-hospital complication rates for approved patients were 3.3%, 3.0%, 2.8%, and 2.7%, while 90-day readmission rates were 5.1%, 4.4%, 4.2%, and 4.1%, respectively. Approved patients had higher MCID achievement (P < .001) but higher nonhome discharge (P = .01) and 90-day readmissions rates (P = .036) than denied patients. CONCLUSION: Most patients achieved MCID at all theoretical PROM thresholds with low complication and readmission rates. Setting preoperative PROM thresholds for THA eligibility did not guarantee clinically successful outcomes.

Preoperative Patient-Reported Outcome Measure Thresholds Should Not be Used for Indicating Total Knee Arthroplasty.

BACKGROUND: While Medicare requires patient-reported outcome measures (PROMs) for many quality programs, some commercial insurers are requiring preoperative PROMs when determining eligibility for total knee arthroplasty (TKA). Concerns exist that these data may be used to deny TKA to patients above a specific PROM score, but the optimal threshold is unknown. We aimed to evaluate TKA outcomes based on theoretical PROM thresholds. METHODS: We retrospectively analyzed 25,246 consecutive primary TKA patients from 2016 to 2019. Hypothesized preoperative knee injury and osteoarthritis outcome score for joint replacement cutoffs of 40, 50, 60, and 70 points were used. Preoperative scores below each threshold were considered "approved" surgery. Preoperative scores above each threshold were considered "denied" surgery. In-hospital complications, 90-day readmissions, and discharge disposition were evaluated. One-year minimum clinically important difference (MCID) achievement was calculated using previously validated anchor-based methods. RESULTS: For "denied" patients below thresholds 40, 50, 60, and 70 points, 1-year MCID achievement was 88.3%, 85.9%, 79.6%, and 77%, respectively. In-hospital complication rates for approved patients were 2.2%, 2.3%, 2.1%, and 2.1%, while 90-day readmission rates were 4.6%, 4.5%, 4.3%, and 4.3%, respectively. Approved patients had higher MCID achievement rates (P < .001) for all thresholds but higher nonhome discharge rates than denied patients for thresholds 40 (P < .001), 50 (P = .002), and 60 (P = .024). Approved and denied patients had similar in-hospital complication and 90-day readmission rates. CONCLUSION: Most patients achieved MCID at all theoretical PROMs thresholds with low complication and readmission rates. Setting preoperative PROM thresholds for TKA eligibility can help optimize patient improvement, but such a policy can create access to care barriers for some patients who would otherwise benefit from a TKA.

Mortality and Complications Following Early Conversion Arthroplasty for Failed Hip Fracture Surgery.

BACKGROUND: Hip fracture in older patients leads to high morbidity and mortality. Patients who are treated surgically but fail acutely face a more complex operation with conversion total hip arthroplasty (THA). This study investigated mortalities and complications in patients who experienced failure within one year following hip fracture surgery requiring conversion THA. METHODS: Patients aged 60 years or more undergoing conversion THA within one year following intertrochanteric or femoral neck fracture were identified and propensity-matched to patients sustaining hip fractures treated surgically but not requiring conversion within the first year. Patients who had two-year follow-up (91 conversions; 247 comparisons) were analyzed for 6-month, 12-month, and 24-month mortalities, 90-day readmissions, surgical complications, and medical complications. RESULTS: Nonunion and screw cutout were the most common indications for conversion THA. Mortalities were similar between groups at 6 months (7.7% conversion versus 6.1% nonconversion, P = .774), 12 months (11% conversion versus 12% nonconversion, P = .999), and 24 months (14% conversion versus 22% nonconversion, P = .163). Survivorships were similar between groups for the entire cohort and by fracture type. Conversion THA had a higher rate of 90-day readmissions (14% versus 3.2%, P = .001), and medical complications (17% versus 6.1%, P = .006). Inpatient and 90-day orthopaedic complications were similar. CONCLUSION: Conversion THA for failed hip fracture surgery had comparable mortality rates to hip fracture surgery, with higher rates of perioperative medical complications and readmissions. Conversion THA following hip fracture represents a potential "second hit" that both surgeons and patients should be aware of with initial decision-making.

Poor Patient Compliance Limits the Attainability of Patient-Reported Outcome Measure Completion Thresholds for the Comprehensive Care for Joint Arthroplasty Model.

BACKGROUND: The Centers for Medicare and Medicaid Services (CMS) links patient-reported outcome measures (PROMs) with hospital reimbursement in some value-based models for total joint arthroplasty (TJA). This study evaluates PROM reporting compliance and resource utilization using protocol-driven electronic collection of outcomes for commercial and CMS alternative payment models (APMs). METHODS: We analyzed a consecutive series of patients undergoing total hip arthroplasty (THA) and total knee arthroplasty (TKA) from 2016 and 2019. Compliance rates were obtained for reporting hip disability and osteoarthritis outcome score for joint replacement (HOOS-JR.), knee disability and osteoarthritis outcome score for joint replacement (KOOS-JR.), and 12-item short form survey (SF-12) surveys preoperatively and postoperatively at 6-months, 1 year, and 2- years. Of 43,252 THA and TKA patients, 25,315 (58%) were Medicare-only. Direct supply and staff labor costs for PROM collection were obtained. Chi-square testing compared compliance rates between Medicare-only and all-arthroplasty groups. Time-driven activity-based costing (TDABC) estimated resource utilization for PROM collection. RESULTS: In the Medicare-only cohort, preoperative HOOS-JR./KOOS-JR. compliance was 66.6%. Postoperative HOOS-JR./KOOS-JR. compliance was 29.9%, 46.1%, and 27.8% at 6 months, 1 year, and 2 years, respectively. Preoperative SF-12 compliance was 70%. Postoperative SF-12 compliance was 35.9%, 49.6%, and 33.4% at 6 months, 1 year, and 2 years, respectively. Medicare patients had lower PROM compliance than the overall cohort (P < .05) at all time points except preoperative KOOS-JR., HOOS-JR., and SF-12 in TKA patients. The estimated annual cost for PROM collection was $273,682 and the total cost for the entire study period was $986,369. CONCLUSION: Despite extensive experience with APMs and a total expenditure near $1,000,000, our center demonstrated low preoperative and postoperative PROM compliance rates. In order for practices to achieve satisfactory compliance, Comprehensive Care for Joint Replacement (CJR) compensation should be adjusted to reflect the costs associated with collecting these PROMs and CJR target compliance rates should be adjusted to reflect more attainable levels consistent with currently published literature.

Safely Reducing Unnecessary Radiographs in Suspected Pediatric Musculoskeletal Injuries: A Multidisciplinary Developed Algorithm.

BACKGROUND: While radiographs are a critical component of diagnosing musculoskeletal (MSK) injuries, they are associated with radiation exposure, patient discomfort, and financial costs. Our study initiative was to develop a system to diagnose pediatric MSK injuries efficiently while minimizing unnecessary radiographs. METHODS: This was a quality improvement trial performed prospectively at a single level one trauma center. A multidisciplinary team with leaders from pediatric orthopedics, trauma surgery, emergency medicine, and radiology created an algorithm delineating which x-rays should be obtained for pediatric patients presenting with MSK injuries. The intervention was performed in the following 3 stages: stage 1: retrospective validation of the algorithm, stage 2: implementation of the algorithm, and stage 3: sustainability evaluation. Outcomes measured included number of extra radiographs per pediatric patient and any missed injuries. RESULTS: In stage 1, 295 patients presented to the pediatric emergency department with MSK injuries. A total of 2148 radiographs were obtained, with 801 not indicated per the protocol, for an average of 2.75 unnecessary radiographs per patient. No injuries would have been missed using the protocol. In stage 2, 472 patients had 2393 radiographs with 339 not indicated per protocol, averaging 0.72 unnecessary radiographs per patient, a significant reduction from stage 1 ( P < 0.001). There were no missed injuries identified on follow-up. In stage 3, improvement was sustained for the subsequent 8 months with an average of 0.34 unnecessary radiographs per patient ( P < 0.05). CONCLUSIONS: Sustained reduction of unnecessary radiation to pediatric patients with suspected MSK injuries was accomplished through the development and implementation of a safe and effective imaging algorithm. The multidisciplinary approach, widespread education of pediatric providers, and standardized order sets improved buy-in and is generalizable to other institutions.Level of Evidence: III.

The effect of outpatient web-based online scheduling versus traditional staff scheduling systems on progression to surgery and no-show rates.

Background: This study aimed to compare the rate of scheduled surgery and no-show rates between online-scheduled appointments and traditionally scheduled appointments. Materials and Methods: All scheduled outpatient visits at a single large multi-subspecialty orthopedic practice in three U.S. states (PA, NJ, and NY) were collected from February 1, 2022, to February 28, 2022. Visits were categorized as "online-scheduled" or "traditionally scheduled" and then further grouped as "no-show," "canceled," or "visited." Finally, visits were categorized as either "new patient" or "follow-up." Results: There was no significant difference between scheduling systems for patient progression to any procedure within 3 months of the initial visit (P = 0.97) and patient progression for surgery only within 3 months of the initial visit (P = 0.88). However, we found a significant difference with a higher rate of progression to surgery in traditionally scheduled than online-scheduled visits when accounting for only new patient visits that progressed to surgery within 3 months of the initial encounter (P = 0.036). No-show rates between scheduling systems were not significant (P = 0.79), but no-show rates were significant when comparing the practice's subspecialties (P < 0.001). Finally, no-show rates for online-scheduled compared to traditionally scheduled patients for both new and follow-up appointments were not significantly different (P = 0.28 and P = 0.94, respectively). Conclusion: Orthopedic practices should utilize online-scheduling systems as there was a higher progression to surgery of traditionally scheduled appointments compared to online. Depending on the subspecialty, no-show rates differed. Furthermore, online-scheduling allows for more patient autonomy and less burden on office staff.

Hospital Charges Are Not Associated With Episode-of-Care Costs or Complications After Total Joint Arthroplasty.

BACKGROUND: The Centers for Medicare and Medicaid Services (CMS) now requires hospitals to publish charges for commonly performed procedures. This study aimed to evaluate compliance with the price transparency mandate and to determine if there is a correlation between hospital charges and episode-of-care claims costs and outcomes after total hip arthroplasty (THA) and total knee arthroplasty (TKA). METHODS: We identified a consecutive series of 2476 Medicare patients who underwent primary THA or TKA from 2018 to 2019 at one of 18 hospitals. Each hospital website was explored to assess compliance with the new price transparency requirements. Demographics, comorbidities, complications, and readmissions were recorded. Ninety-day episode-of-care claims costs were calculated using CMS claims data. Multivariate regression was performed to determine whether hospital charges had any association with complications, readmissions, or episode-of-care costs. RESULTS: There was no correlation between published hospital charges and inpatient costs (r = 0.087), postacute care costs (r = 0.126), or episode-of-care costs (r = 0.131). When controlling for demographics and comorbidities, there was no association between published charges and complications (P = .433) or readmissions (P = .141). All hospitals posted some shoppable services information online, but only 7 (39%) were fully compliant by publishing all price data. Of the 11 hospitals (61%) publishing hospital THA and TKA charges, the mean charge was $48,325 (range, $12,625-$79,531). CONCLUSION: Published charges for TKA and THA had no correlation with episode-of-care claims costs and were not associated with clinical outcomes. Despite efforts by CMS to increase price transparency, few hospitals were fully compliant, and a wide range in published charges was found.

Orthopedic Specialty Hospital Reasons for Transfer and Subsequent Outcomes.

BACKGROUND: Surgical specialty hospitals provide patients, surgeons, and staff with a streamlined approach to elective surgery but may not be equipped to handle all complications arising postoperatively. The purpose of this study is to evaluate the immediate postoperative and 90-day outcomes of patients who were transferred from a high-volume specialty hospital following primary total hip arthroplasty (THA) or total knee arthroplasty (TKA). METHODS: All patients who were admitted to one orthopedic specialty hospital for primary THA or TKA between January 2015 and December 2019, and subsequently transferred to a tertiary care hospital, were identified and propensity matched to nontransferred patients. Emergency department visits, complications, readmissions, mortality, and revisions within 90 days of surgery were identified for each group. RESULTS: There were 26 TKAs (0.78%) and 20 THAs (0.48%) transferred, representing 0.62% of all primary THAs and TKAs performed over the study duration. Arrhythmia and chest pain were the most common reasons for transfer. Ninety-day readmissions were significantly higher in the transfer group (15.2% vs 4.3%, P = .020) with an odds ratio for readmission after transfer of 3.9 (95% confidence interval 1.3-12.4). Overall complications and orthopedic complications did not differ significantly, although transferred patients had a higher rate of medical complications (13.0% vs 2.2%, P = .008) with an odds ratio of 6.7 (95% confidence interval 1.6-28.2). CONCLUSION: Transfer from a specialty hospital is rarely required following primary TKA and THA. Although not at increased risk for orthopedic complications, these transferred patients are at increased risk for readmissions and medical complications within the first 90 days of their care, necessitating increased vigilance.

A Time-Driven Activity-Based Costing Analysis of Simultaneous Versus Staged Bilateral Total Hip Arthroplasty and Total Knee Arthroplasty.

BACKGROUND: Although studies have compared the claims costs of simultaneous and staged bilateral total hip arthroplasty (THA) and total knee arthroplasty (TKA), whether a simultaneous procedure is cost-effective to the facility remains unknown. This study aimed to compare facility costs and perioperative outcomes of simultaneous vs staged bilateral THA and TKA. METHODS: We reviewed a consecutive series of 560 bilateral THA (170 staged and 220 simultaneous) and 777 bilateral TKA (163 staged and 451 simultaneous). Itemized facility costs were calculated using time-driven activity-based costing. Ninety-day outcomes were compared. Margin was standardized to unadjusted Medicare Diagnosis Related Group payments (simultaneous, $18,523; staged, $22,386). Multivariate regression was used to determine the independent association between costs/clinical outcomes and treatment strategy (staged vs simultaneous). RESULTS: Simultaneous bilateral patients had significantly lower personnel, supply, and total facility costs compared with staged patients with no difference in 90-day complications between the groups. Multivariate analyses showed that overall facility costs were $1,210 lower in simultaneous bilateral THA (P < .001) and $704 lower in TKA (P < .001). Despite lower costs, margin for the facility was lower in the simultaneous group ($6,569 vs $9,225 for THA; $6,718 vs $10,067 for TKA; P < .001). CONCLUSION: Simultaneous bilateral TKA and THA had lower facility costs than staged procedures because of savings associated with a single hospitalization. With the increased Medicare reimbursement for 2 unilateral procedures, however, margin was higher for staged procedures. In the era of value-based care, policymakers should not penalize facilities for performing cost-effective simultaneous bilateral arthroplasty in appropriately selected patients.

Unplanned Return to the Operating Room in Upper-Extremity Surgery: Incidence and Reason for Return.

PURPOSE: Complications after upper-extremity surgery are generally infrequent. The purpose of this study was to assess the rate of early unplanned return to the operating room (URTO) within 3 months after surgery) in upper-extremity surgical procedures. Our hypotheses were that the rate of URTO in upper-extremity surgery would be low and that surgically treated fractures would be at greatest risk for complications. METHODS: We performed a retrospective review of all upper-extremity surgical procedures performed at a large academic practice of fellowship-trained hand surgeons over a 5-year period. A chart review was conducted of all patients who underwent a second surgery within 3 months of the initial surgery. The surgical billing database was queried to determine the incidence of URTO per Current Procedural Terminology code. RESULTS: There were 422 Current Procedural Terminology codes with URTO out of a total of 62,608, for an incidence of 0.6%. The most frequently performed procedures were carpal tunnel release (10,674; 0.1% URTO), trigger finger release (4,549; 0.5% URTO), and open reduction internal fixation (ORIF) for distal radius fracture (2,728; 1.2% URTO). Procedures with the highest incidences of URTO were open reduction and internal fixation of the ulna (4.9%) and excision of the olecranon bursa (4.1%). Traumatic injuries were more commonly associated with URTO compared with elective procedures. Bony trauma and soft tissue trauma had URTO incidences of 1.4% and 1.1%, respectively, whereas bony elective and soft tissue elective cases were 0.6% and 0.4%, respectively. CONCLUSIONS: The 90-day URTO rate after upper-extremity surgery was low but higher than previously reported 30-day reoperation rates. Elbow procedures were most likely to result in URTO, as were procedures relating to bony and soft tissue trauma. Based on these results, we are able to counsel patients that the most common procedures we perform have low URTO rates, but surgically treated fractures are at greatest risk. TYPE OF STUDY/LEVEL OF EVIDENCE: Prognostic II.

Tranexamic Acid is Associated With Decreasing the Risk of Complications in Patients Undergoing Arthroplasty With Preoperative Coagulopathy.

BACKGROUND: Preoperative coagulopathy is a risk factor for perioperative blood loss. The antifibrinolytic effects of tranexamic acid (TXA) could negate the association between preoperative coagulopathy and adverse outcomes in patients undergoing total joint arthroplasty (TJA). However, no studies have evaluated this relationship. This study compared the perioperative outcomes of coagulopathic patients undergoing TJA who did and did not receive TXA. METHODS: We retrospectively reviewed 2123 primary TJAs (975 knees and 1148 hips) performed in patients with a preoperative coagulopathy. Coagulopathy was defined as international normalized ratio >1.2, partial thromboplastin time >35 seconds, or platelet count <150,000/µL. TXA was administered in 240 patients and not administered in 1883 patients. Demographics, comorbidities, and surgical details including operative time, blood loss, and thromboprophylaxis agent were recorded. Multivariate regression was used to identify factors associated with 90-day outcomes. RESULTS: Patients who received TXA had less intraoperative blood loss and 2.3 times decreased risk of 90-day complications (odds ratio [OR] 0.43, 95% confidence interval [CI] 0.20-0.85, P = .021), especially cardiovascular (2.92% vs 12.1%, P <.001) and wound complications (0.0% vs 1.59%, P = .042). TXA was also associated with shorter length of stay (beta 0.74, 95% CI 0.67-0.82, P <.001) and decreased risk of nonhome discharge (OR 0.50, 95% CI 0.29-0.83, P = .009). There was no difference in mortality or 90-day readmissions between the groups. CONCLUSION: TXA administration decreased the incidence of perioperative complications and resource utilization in patients undergoing arthroplasty with a preoperative coagulopathy identified on preadmission testing. These findings support the broader adoption of TXA in patients undergoing TJA, particularly when the patient has a preoperative coagulopathy.

Technique for Failed Total Wrist Arthroplasty Conversion to a Total Wrist Arthrodesis with Allograft Interposition.

The frequency of prosthetic total wrist arthroplasty continues to increase. With this increase comes the expected subsequent increase in need for revision or salvage procedures. The technique presented here involves the use of a cortical allograft interposition graft to restore bone stock and length for failed total wrist arthroplasty.

Intraoperative Greater Trochanteric Fractures During Revision Total Hip Arthroplasty May Not Always Need Surgical Fixation.

Many fixation techniques have been described to manage intraoperative greater trochanteric (GT) fractures during revision total hip arthroplasty (rTHA), but complications such as broken hardware and bursitis are common. The purpose of this study was to determine whether surgical fixation of an intraoperative GT fracture resulted in improved outcomes in rTHA. We reviewed a consecutive series of 1442 rTHA patients at our institution from 2008 to 2019. We identified all patients with an intraoperative GT fracture and noted whether the fracture was fixed surgically or left without fixation. Demographics, comorbidities, complications, radiographic union, and dislocations were compared between the groups. Of the 44 (3%) intra-operative GT fractures identified, 23 (52%) underwent fixation, most commonly with claw plates (8 patients) and cables (10 patients). There were no differences in the rates of radiographic union (86% vs 100%, P=.100), dislocations (4% vs 10%, P=.599), or re-revision (10% vs 13%, P=1.000) between the groups. Patients undergoing fixation had a higher rate of bursitis postoperatively, but it was not significant with the numbers available (35% vs 10%, P=.072). Our cohort of GT fractures at a large revision referral institution represents the largest reported series of GT fractures during rTHA. Surgical fixation in rTHA did not show improved outcomes in terms of dislocation, re-revision, and radiographic union compared with those fractures that were not fixed. There was a trend toward increased postoperative bursitis in the group undergoing surgical fixation. Further research is needed on this topic, as the number of rTHAs continues to increase. [Orthopedics. 2023;46(5):297-302.].

Reasons for transfer and subsequent outcomes among patients undergoing elective spine surgery at an orthopedic specialty hospital.

Objective: To evaluate the reasons for transfer as well as the 90-day outcomes of patients who were transferred from a high-volume orthopedic specialty hospital (OSH) following elective spine surgery. Materials and Methods: All patients admitted to a single OSH for elective spine surgery from 2014 to 2021 were retrospectively identified. Ninety-day complications, readmissions, revisions, and mortality events were collected and a 3:1 propensity match was conducted. Results: Thirty-five (1.5%) of 2351 spine patients were transferred, most commonly for arrhythmia (n = 7; 20%). Thirty-three transferred patients were matched to 99 who were not transferred, and groups had similar rates of complications (18.2% vs. 10.1%; P = 0.228), readmissions (3.0% vs. 4.0%; P = 1.000), and mortality (6.1% vs. 0%; P = 0.061). Conclusion: Overall, this study demonstrates a low transfer rate following spine surgery. Risk factors should continue to be optimized in order to decrease patient risks in the postoperative period at an OSH.

The Use of Computerized Tomography Scans in Elective Knee and Hip Arthroplasty-What Do They Tell Us and at What Risk?

The average background radiation exposure in the United States has nearly doubled over the previous quarter century, with almost all the increase derived from medical imaging. Nearly 2% of all cancers in the United States may be attributable to radiation from computerized tomography (CT) scans. Given the nondiagnostic nature of CT scans that are used in elective knee and hip arthroplasty today, special consideration should be given to the inherent risk of radiation exposure with routine use of this technology. Methods to decrease radiation exposure including modulating the settings of the CT machine and using alternative non-CT-based systems can decrease patient exposure to radiation from CT scans. The rapid evolution of CT technology in arthroplasty has allowed for expanded clinical applications, the benefits of which remain controversial.

Outcomes After Repair of Quadriceps Tendon Rupture in Patients Aged 40 Years and Younger.

Background: Injury to the quadriceps tendon is rare and most commonly occurs in middle-aged men. Few reports are available regarding outcomes after quadriceps tendon rupture in younger patients. Purpose/Hypothesis: To review the clinical outcomes of patients who underwent quadriceps tendon repair at age ≤40 years. We hypothesized that this cohort would experience better clinical outcomes in comparison to historical older controls. Study Design: Case series; Level of evidence, 4. Methods: Using an institutional database, we retrospectively identified patients who underwent quadriceps tendon repair between January 2009 and December 2017. Patients were included in the study if they were aged ≤40 years at the time of surgery and had sustained an isolated, complete tendon rupture. Patient and injury characteristics were recorded. Patients were contacted to complete a custom survey, the 2000 International Knee Documentation Committee (IKDC) form, the Lysholm scale, and the Tegner scale. Results: Included were 38 patients (86.8% male; mean age, 32.0 ± 6.9 years; age range, 15-40 years), with a mean follow-up of 5.9 ± 2.3 years (range, 2.4-11.3 years). At final follow-up, the mean IKDC score was 74.1 ± 22.6 (range, 26.4-100.0), and the mean Lysholm score was 85.4 ± 20.0 (range, 30-100), which were similar if not inferior to historical controls of patients >40 years. Only 16 patients (42.1%) had unchanged or higher Tegner scores after surgery, whereas 22 patients (57.9%) reported lower postoperative activity level. Overall, 91.2% (31/34) of workers returned at a mean 3.9 months after surgery, whereas 63% (12/19) of athletes were able to return to play at 8.8 months. At final follow-up, 12 patients (31.6%) reported persistent pain and stiffness in their knees. Additionally, 3 patients (7.9%) reported pain without stiffness, and 4 (10.5%) reported stiffness without pain. Patients reporting pain or stiffness had significantly lower IKDC scores, Lysholm scores, postoperative Tegner scores, and change in their Tegner score at final follow-up in comparison to those who did not report pain or stiffness. Conclusion: Although patients aged ≤40 years had satisfactory outcomes after quadriceps tendon repair, this injury resulted in significant long-term sequelae in a substantial percentage of patients, despite their youth. Further, this group did not have better outcomes compared with historical controls aged > 40 years.

Activity Measure for Post-acute Care Mobility Scoring System: Comparison of Nursing and Physical Therapy Evaluation for Primary Hip and Knee Arthroplasty Patients.

BACKGROUND: Optimizing resource utilization after total joint arthroplasty (TJA) has become increasingly vital. The Activity Measure for Post-acute Care (AM-PAC) "6-clicks" scoring system is a validated, physical therapist (PT)-administered metric of patient basic mobility and predicts discharge disposition. This study aimed to determine whether the use of AM-PAC scoring by nurses in the postoperative period could (1) substitute for AM-PAC scoring by therapists and (2) predict 90-day outcomes in TJA patients. METHODS: We retrospectively reviewed all primary TJAs conducted by two surgeons at a single institution from 2019 to 2021. Patients underwent postoperative AM-PAC evaluation by nursing and physical therapy within 24 hours of surgery, and specific timing of nursing and PT scores was determined. Inter-rater reliability between therapy and nursing scores was analyzed. Multiple regression was used to determine the association between AM-PAC scores and readmissions, complications, length of stay, and nonhome discharge. RESULTS: In total, 1,119 patients were included. Agreement testing between therapy and nursing scores was weak for all six AM-PAC components, with a Spearman correlation of 0.437. Nursing scores were typically conducted earlier than therapist scores (204.0 ± 249.9 minutes versus 523.5 ± 449.4 minutes; P < 0.001). Therapy and nursing scores were not notable predictors for 90-day complications or readmissions. However, higher therapy and nursing scores were predictors of less than 2-day hospitalization (odds ratio [OR] 0.63, P < 0.001; OR 0.88, P < 0.001) and fewer nonhome discharges (OR 0.62, P < 0.001; OR 0.84, P < 0.001). CONCLUSION: Although nursing-driven mobility assessments could potentially improve efficiency of patient discharge and control costs, nursing AM-PAC scoring did not serve as an appropriate substitute for PT scoring in patients undergoing primary total hip and knee arthroplasty at our institution.

Do New Hospital Price Transparency Regulations Reflect Value in Arthroplasty?

INTRODUCTION: In an attempt to improve price transparency, the Centers for Medicare & Medicaid Services (CMS) now requires hospitals to post clear, accessible pricing data for common procedures. We aimed to determine how many top orthopaedic hospitals are compliant with the new regulation and whether there was any correlation between hospital charges and outcomes after total hip arthroplasty (THA) and total knee arthroplasty (TKA). METHODS: The hospital websites of the top 101 orthopaedic hospitals per the US News & World Report 2020-2021 were explored to assess compliance with the price transparency requirement. We recorded the gross inpatient charge, cash price, payer-specific negotiated charge, and deidentified maximum and minimum payer rates for THA and TKA. Outcome metrics included hospital ranking and Medicare risk-adjusted arthroplasty readmission and complication rates. RESULTS: Although 94 hospitals (93%) posted some shoppable service information as required by CMS, only 21 hospitals (20%) were fully compliant. The mean inpatient charge for THA and TKA was $72,111 (range, $14,716 to $195,264), cash price was $39,027 (range, $2,920 to $110,858), and minimum and maximum payer rates were $16,140 and $57,949, respectively. Better hospital ranking was weakly correlated with higher charges (coefficient 0.223; P = 0.049). No correlation between charges and complications (P = 0.266) or readmissions (P = 0.735) was observed. CONCLUSION: Few hospitals are fully compliant with the new CMS price transparency regulations. We found a wide range of hospital charges for THA and TKA without correlation with complications or readmissions. Although efforts by CMS to increase price transparency should be welcomed, increased costs should be justified by quality in the era of value-based care.