The Cost-Effectiveness of Anterior Cruciate Ligament Reconstruction in Competitive Athletes

An ecological dynamics approach to ACL injury risk research: a current opinion

Research of non-contact anterior cruciate ligament (ACL) injury risk aims to identify modifiable risk factors that are linked to the mechanisms of injury. Information from these studies is then used in the development of injury prevention programmes. However, ACL injury risk research often leans towards methods with three limitations: 1) a poor preservation of the athlete-environment relationship that limits the generalisability of results, 2) the use of a strictly biomechanical approach to injury causation that is incomplete for the description of injury mechanisms, 3) and a reductionist analysis that neglects profound information regarding human movement. This current opinion proposes three principles from an ecological dynamics perspective that address these limitations. First, it is argued that, to improve the generalisability of findings, research requires a well-preserved athlete-environment relationship. Second, the merit of including behaviour and the playing situation in the model of injury causation is presented. Third, this paper advocates that research benefits from conducting non-reductionist analysis (i.e., more holistic) that provides profound information regarding human movement. Together, these principles facilitate an ecological dynamics approach to injury risk research that helps to expand our understanding of injury mechanisms and thus contributes to the development of preventative measures.

High Case Volume Predicts Greater Odds of Autograft Use and Meniscal Repair for Anterior Cruciate Ligament Reconstruction

PURPOSE

To evaluate how both annual surgeon and facility volume affect the cost and outcomes of anterior cruciate ligament reconstruction surgery. We also aimed to identify trends in how surgeon caseload predicts graft selection.

METHODS

The 2014 State Ambulatory and Surgical Database from Florida was used. Every case with Current Procedural Terminology code 29888 ("Arthroscopic anterior cruciate ligament reconstruction") was selected. Surgeon and facility identifiers were used to separate high- and low-volume groups, defined as >25 cases for surgeons and >125 cases for facilities. Univariate analysis was performed for patient demographics and surgical characteristics. Multivariate analysis was performed on significant factors to determine how these variables impact cost and odds of allograft usage, postoperative admission, and meniscal repair.

RESULTS

There were 7905 cases performed between January 1, 2014, and December 31, 2014 after excluding same-year revisions. High-volume surgeons had $6155 lower total charges, were 1.949 times more likely to use an autograft, and had 54.5% lower odds of postoperative admission (all P < .001). They were also 1.196 times more likely to perform a meniscal repair (P = .017). In patients younger than 18, low-volume surgeons were 3.7 times more likely to use an allograft (P < .001). Concomitant multiligamentous procedures were also performed at greater rates in the high-volume group. Postoperative admission added $18,698, and allografts added $9174 (both P < .001).

CONCLUSIONS

We found that high-volume surgeons were more likely to perform a meniscal repair and less likely to have their patients admitted postoperatively, which was the second largest cost driver of anterior cruciate ligament reconstruction. They were also significantly less likely to use an allograft, especially in patients younger than the age of 18 years. High-volume surgeons had lower costs despite greater rates of concomitant procedures.

LEVEL OF EVIDENCE

III, retrospective cohort study.

Cost-utility analysis of early reconstruction surgery versus conservative treatment for anterior cruciate ligament injury in a lower-middle income country

BACKGROUND

The ideal approach for treating anterior cruciate ligament (ACL) injury is still disputed. This study aimed to determine the more cost-effective strategy by comparing early ACL reconstruction (ACLR) surgery to conservative treatment (rehabilitation with optional delayed reconstruction) for ACL injury in a lower/middle-income country (LMIC), Indonesia.

METHODS

A decision tree model was constructed for cost-utility analysis of early ACLR versus conservative treatment. The transition probabilities between states were obtained from the literature review. Utilities were measured by the EQ-5D-3 L from a prospective cohort study in a local hospital. The costs were obtained from a previous study that elaborated on the burden and cost of ACLR in Indonesia. Effectiveness was expressed in quality-adjusted life years gained (QALYs). Principal outcome measure was the incremental cost-effectiveness ratios (ICER). Willingness-to-pay was set at US$12,876 - three times the Indonesian GDP per capita in 2021 - the currently accepted standard in Indonesia as suggested by the World Health Organization Choosing Interventions that are Cost-Effective criterion (WHO-CHOICE).

RESULTS

The early ACLR group showed an incremental gain of 0.05 QALYs over the conservative treatment group, with a higher overall cost to society of US$976. The ICER of ACLR surgery was US$19,524 per QALY, above the WTP threshold of US$12,876. The ICER was sensitive to cost of conservative treatment, cost of ACLR, and rate of cross-over to delayed ACLR numbers in the conservative treatment group. Using the WTP threshold of US$12,876, the probability of conservative treatment being preferred over early ACLR was 64%.

CONCLUSIONS

Based on the current model, early ACLR surgery does not seem more cost-effective compared to conservative treatment for ACL injury patients in Indonesia. Because the result was sensitive to the rate of cross-over probabilities from the conservative treatment alone to delayed ACLR, a future study with a long-term perspective is needed to further elucidate its impact.

Why Your Patient May Need an ACL Reconstruction Plus Lateral Extra-Articular Tenodesis Procedure

Anterior cruciate ligament (ACL) tears are one of the most common knee injuries experienced by active individuals engaging in cutting sports. Despite improved surgical techniques and rehabilitation, the return to sport rate and re-tear rates remain unsatisfactory. Lateral extra-articular tenodesis (LET) is a procedure that has been growing in interest when performed in conjunction with ACL reconstruction. The benefits of adding an LET procedure to an ACL surgery may include greater rotational stability, decreased re-tear rates, and improved return to play. Level of evidence: V.

The Influence of Psychosocial Factors on Patients Undergoing Anterior Cruciate Ligament Reconstruction

CONTEXT

Anterior cruciate ligament (ACL) injuries greatly impact patients in terms of future performance, reduced physical activity and athletic participation, and overall economic burden. Decades of research have investigated how to improve ACL reconstruction (ACLR) outcomes. Recently, there has been growing interest to understand the effects of psychosocial factors on patient outcomes.

STUDY DESIGN

Clinical review.

EVIDENCE ACQUISITION

A search of the PubMed database was performed in March 2023. Articles were reviewed by at least 2 authors to determine relevance. We highlighted publications of the past 5 years while incorporating previous pertinent studies.

LEVEL OF EVIDENCE

Level 5.

RESULTS

There is no standardization of psychosocial factors regarding ACLR. As such, there is a lack of consensus regarding which psychosocial measures to use and when. There is a need for clarification of the complex relationship between psychosocial factors and physical function. Despite this, psychosocial factors have the potential to help predict patients who are more likely to return to sport: (1) desire/motivation to return; (2) lower levels of kinesiophobia; (3) higher levels of self-efficacy, confidence, and subjective knee function; (4) risk acceptance; and (5) social support. However, there are no standardized interventions to improve psychosocial factors after ACLR.

CONCLUSION

Psychosocial factors affect outcomes after ACLR. However, the interplay between psychosocial factors and physical function is complex. There is emerging evidence that testing and interventions may improve ACLR outcomes. There is a lack of standardized interventions to determine or improve psychosocial factors after ACLR. Further research is needed to identify psychosocial factors and to develop standardized interventions for clinicians to implement to improve clinical outcomes.

Knee extensor torque-velocity relationships following anterior cruciate ligament reconstruction

BACKGROUND

The inherent nature of the torque-velocity relationship is the inverse nature between the velocity of muscle contraction and torque production and is an indication of muscle function. The purpose of this study was to characterize the torque-velocity relationship in the quadriceps following anterior cruciate ligament reconstruction compared to healthy limbs.

METHODS

681 participants were included, 493 of which were patients at least four months following anterior cruciate ligament reconstruction (23.2 ± 10.08 yr, 6.6 ± 5.37 months post-surgery) and 188 were healthy participants (21.6 ± 3.77 yr). A subset of 175 post-surgical participants completed a repeated visit (8.1 ± 1.71 months post-surgery). Participants completed isokinetic knee extension at 90°/s and 180°/s. A one-way ANOVA was used to compare torque velocity relationships by limb type (surgical, contralateral, healthy). Paired samples t-tests were conducted to analyze the torque-velocity relationship across limbs and across time.

FINDINGS

There was a large effect for limb type on torque-velocity (F(2, 1173) = 146.08, p < 0.001, η2 = 0.20). Surgical limbs demonstrated significantly lower torque-velocity relationships compared to the contralateral limbs (ACLR: 0.26 Nm/kg, contralateral:0.55 Nm/kg, p < 0.001, d = 1.18). Healthy limbs had similar torque-velocity relationships bilaterally (dominant limb: 0.48 Nm/kg, non-dominant limb: 0.49 Nm/kg, p = 0.45). The torque velocity relationship for the involved limb significantly increased in magnitude over time (+0.11 Nm/kg, p < 0.001, d = -0.61) while the contralateral limb torque-velocity relationship remained stable over time (0.0 Nm/kg difference, p = 0.60).

INTERPRETATION

Following surgery, the knee extensors appear to have altered torque-velocity relationships compared to contralateral and healthy limbs. This may indicate a specific target for assessment and rehabilitation following surgery.

Recurrent Instability Rate and Subjective Knee Function following Accelerated Rehabilitation after ACL Reconstruction in Comparison to a Conservative Rehabilitation Protocol

INTRODUCTION

The Purpose of the present study was to assess the outcome of anterior cruciate ligament reconstruction (ACLR) with an accelerated rehabilitation protocol and to compare it to a conservative rehabilitation protocol. It was hypothesized that an accelerated rehabilitation protocol, including brace-free early weight bearing, would result in a higher rate of recurrent instability and revision surgery compared to a conservative rehabilitation protocol.

METHODS

From 2016 to 2017, two different rehabilitation protocols for isolated ACLR were used at a high-volume knee surgery center. A total of 65 consecutive patients with isolated hamstring ACLR, of whom n = 33 had been treated with an accelerated (AccRehab) and n = 32 with a conservative rehabilitation protocol (ConRehab), were retrospectively included in the study. Patients were evaluated for recurrent instability, revision surgery, and other complications at a mean follow-up period of 64 ± 7.4 months. In addition, Tegner Activity Scale, Lysholm Score, and IKDC-subjective Score were evaluated. Statistical comparison between the two groups was performed utilizing Fisher's exact test and Student's t-test.

RESULTS

Mean age (29.3 vs. 26.6 years) and preoperative Tegner Score (6.4 vs. 5.9) were comparable between both groups. At 64 ± 7.4 months after ACLR, six cases of recurrent instability were reported in the AccRehab group (18%) in comparison to three cases (9%) in the ConRehab group (p = n.s.). There was no significant difference regarding revision surgery and further complications. Furthermore, no significant difference was found between both groups regarding Tegner (5.5 ± 1.9 vs. 5.5 ± 1.2), Lysholm (93.6 ± 6.3 vs. 89.3 ± 10.7), and IKDC score (89.7 ± 7.9 vs. 86.7 ± 12.1).

CONCLUSION

No significant disadvantage of an accelerated rehabilitation protocol following ACLR was found in terms of recurrent instability rate, revision surgery, or patient-reported outcome. However, a trend towards a higher reinstability rate was found for an accelerated rehabilitation protocol. Future level one trials evaluating brace-free early weight bearing following ACLR are desirable.

Meniscus Work and Implant Selection Are Major Cost Drivers of Anterior Cruciate Ligament Reconstruction

Background The current study examines the financial charges associated with primary anterior cruciate ligament reconstruction (ACLR), specifically the contribution of graft choice, graft type, and concomitant meniscus surgery, in the outpatient hospital setting. Methods A retrospective financial billing review was performed on patients who underwent ACLR at a single academic medical center from January to December 2019. Age, BMI, insurance, length of operation, regional block, implants, meniscus surgery, graft type, and graft choice were extracted from hospital electronic patient records. Charges attributed with graft, anesthesia services, supplies, implants, surgeon fees, radiology charges, and total charges were collected. Total amount that insurance and patient paid were also obtained. Descriptive and quantitative statistics were performed. Results A total of 28 patients were studied (18 males, 10 females). The average age was 23.8 years. There were 20 concomitant meniscus surgeries. Six allografts and 22 autografts were used [eight bone-patellar tendon-bone (BPTB), eight hamstrings, six quadriceps]. The average and median total charge was $61,004 and $60,390, respectively (range: $31,403 to $97,914). The average insurance paid was $26,045 while out-of-pocket costs were $402. The average paid by private insurance was higher compared to government insurance ($31,111 vs. $11,066, p<0.001). Graft choice such as allograft vs. autograft (p=0.035) and meniscus surgery (p=0.048) were significant factors to the overall cost. Conclusions Graft choice, specifically the quadrupled hamstring autograft, and concomitant meniscal surgery are major contributors to variations in ACLR charges. Decreasing implant and graft costs and limiting surgical time can decrease charges associated with ACLR. We hope these findings can help guide surgeon financial decisions, by demonstrating the need to take into account the increased total charges and amount paid associated with specific grafts, meniscus surgery, and prolonged OR time.

The Bone Bridge for Tibial ACL Graft Fixation: A Biomechanical Analysis of Different Tibial Fixation Methods for ACL Reconstruction

Background

The tibial fixation site is considered the weak link in anterior cruciate ligament (ACL) reconstruction, and conflicting results regarding the biomechanical properties of various fixation methods have been reported.

Purpose

To examine knots tied over a bone bridge and its biomechanical properties as a suitable tibial fixation method in ACL reconstruction.

Study Design

Controlled laboratory study.

Methods

We divided 40 fresh-frozen porcine tibiae into 4 equal groups to evaluate flexor tendon grafts set with standard tibial fixation techniques: (1) bone bridge (BB group), (2) suspension button (SB group), (3) combined interference screw and bone bridge (IFS/BB group), and (4) combined interference screw and suspension button (IFS/SB group). Each construct was subjected to cyclic loading (1500 cycles, 50-250 N, 1 Hz) with a servohydraulic materials testing machine to measure elongation; load-to-failure testing (displacement rate: 25 mm/s) was then performed. Load to failure, stiffness, and yield load were compared between constructs using 1-way analysis of variance.

Results

The hybrid fixation constructs (IFS/BB and IFS/SB groups) showed significantly better biomechanical properties than the isolated extracortical fixation constructs (BB and SB groups) (P < .05 for all). There were no differences between the isolated extracortical fixation constructs or between the hybrid fixation constructs in elongation or load to failure; however, stiffness of the IFS/BB group was significantly higher than that of the IFS/SB group (175.3 ± 16.6 vs 144.9 ± 20.1 N/mm, respectively; P < .05). Stiffness between the SB and BB groups was not significantly different.

Conclusion

Hybrid fixation had superior biomechanical performance compared with isolated extracortical fixation. However, tibial graft fixation using a bone bridge either as isolated extracortical fixation or combined with an interference screw for hybrid fixation showed equivalent biomechanical properties compared with suspension button-based graft fixation.

Clinical Relevance

The clinical use of a bone bridge for tibial graft fixation could reduce the cost for ACL reconstruction and lower the rate of implant-associated issues.

"Cost-effectiveness of ACL treatment is dependent on age and activity level: a systematic review"

PURPOSE

To systematically review the literature on health-economic evaluations of anterior cruciate ligament (ACL) injury between reconstruction surgery (ACLR) and non-operative treatment (NO) and suggest the most cost-effective strategy between the two.

METHODS

All economic studies related to ACLR versus NO post-ACL injury, either trial based or model based, published until April 2022, were identified using PubMed and Embase. The methodology of the health-economic analysis for each included study was categorized according to the four approaches: cost-minimization analysis (CMA), cost-effectiveness analysis (CEA), cost-benefit analysis (CBA), and cost-utility analysis (CUA). The quality of each included study was assessed using the Consensus on Health Economic Criteria (CHEC) list.

RESULTS

Of the seven included studies, two compared the strategies of early ACLR and NO alone, and five compared early ACLR and NO with optional delayed ACLR. All studies performed a CUA, and one study performed a CBA additionally. The CHEC scores of the included studies can be considered good, ranging from 15 to 18 from a maximum of 19. Applying the common standard threshold of $50,000 per QALY, six studies in young people with high-activity levels or athletes showed that early ACLR would be preferred over either NO alone or delayed ACLR. Of six studies, two even showed early ACLR to be the dominant strategy over either NO alone or delayed ACLR, with per-patient cost savings of $5,164 and $1,803 and incremental per-patient QALY gains of 0.18 and 0.28, respectively. The one study in the middle-aged people with a moderate activity level showed that early ACLR was not more cost-effective than delayed ACLR, with ICER $101,939/QALY using the societal perspective and ICER $63,188/QALY using the healthcare system perspective.

CONCLUSION

Early ACLR is likely the more cost-effective strategy for ACL injury cases in athletes and young populations with high-activity levels. On the other hand, non-operative treatment with optional delayed ACLR may be the more cost-effective strategy in the middle age population with moderate activity levels.

LEVEL OF EVIDENCE

Systematic review of level III studies.

Trends in Health Care Expenditures and Patient Out-of-Pocket Expenses in Primary Anterior Cruciate Ligament Reconstruction

BACKGROUND

Anterior cruciate ligament reconstruction (ACLR) is one of the most commonly performed orthopaedic procedures in the United States, and the number of procedures is increasing annually, as is the cost. Patients are expected to shoulder a larger out-of-pocket expenditure.

PURPOSE

To answer the following questions: (1) How is reimbursement changing for ACLR, and how is this affecting patients' out-of-pocket expenditures? (2) How are reimbursements from payers and patients' out-of-pocket expenses for ACLR distributed, and how is this changing? (3) Does performing ACLR in an ambulatory surgery center (ASC) result in lower costs for payers and patients?

STUDY DESIGN

Economic and decision analysis study; Level of evidence, 4.

METHODS

A total of 37,763 patients who underwent outpatient primary arthroscopic ACLR in the United States between 2013 and 2017 were identified using the IBM MarketScan Commercial Claims and Encounters Database. Patients with concomitant procedures and revision ACLR were excluded. Recorded outcomes were total patient payments and reimbursed claim totals in US dollars.

RESULTS

Day-of-surgery reimbursement decreased 4.3% from $11,536 in 2013 to $11,044 in 2017, while patient out-of-pocket expenses increased 36% from $1085 in 2013 to $1480 in 2017. Day-of-surgery charges were the highest expense for patients, followed by physical therapy and magnetic resonance imaging (MRI) costs. Total reimbursement for MRI decreased 22.5%, while patient out-of-pocket expenses for MRI increased 166%. ACLR performed in an outpatient hospital resulted in 61% greater day-of-surgery expenditure for payers compared with ACLR performed in an ASC; however, the median total patient out-of-pocket savings for ACLRs performed in an ASC versus outpatient hospital was only $11.

CONCLUSION

Out-of-pocket expenses for patients are increasing as they are forced to cover a larger percentage of their health care costs despite overall payer reimbursement decreasing. High-deductible health plans reimbursed the least out of all insurance types while having the highest patient out-of-pocket expenditure.

Burden and Cost of Anterior Cruciate Ligament Reconstruction and Reimbursement of Its Treatment in a Developing Country: An Observational Study in Indonesia

Objective

The number of anterior cruciate ligament reconstruction (ACLR) procedures is increasing. However, ACLR procedures are likely to be underbudgeted in a developing country like Indonesia. This study aimed to analyze costs for ACLR procedures in Indonesia's resource-limited context, determine the burden of ACLR, and suggest national prices for ACLR reimbursement.

Methods

A retrospective observational study was conducted between 1 January and 31 December 2019 on the cost of ACLR from a payer perspective using inpatient billing records in four hospitals. The national burden of ACLR was calculated, and projected national prices for reimbursement were determined.

Results

Of 80 ACLRs, 53 (66%) were isolated ACLRs and 27 (34%) ACLRs were combined with meniscus treatment. Mean hospital costs incurred per ACLR procedure were US$ 2853, with the dominant cost relating to orthopedic implant prices (US$ 1,387.80). The costs of ACLR with combined meniscus treatment were estimated as being 35% higher than isolated ACLR. The national burden of ACLR showed a total budget of US$ 367.4 million per 100,000 patients (0.03% of GDP) for ACLR with additional meniscus treatment and US$ 271.3 million per 100,000 patients (0.02% of GDP) for isolated ACLR.

Conclusion

ACLR procedures in Indonesia are likely underbudgeted. Adjustments of reimbursement prices for ACLR are needed to facilitate adequate access of Indonesians to the procedures. This study demonstrated varying costs determined for ACLR in Indonesia, which entails that a new reimbursement system with improvement of national prices should become the core of transformation.

Particulated Juvenile Articular Cartilage and Matrix-Induced Autologous Chondrocyte Implantation Are Cost-Effective for Patellar Chondral Lesions

PURPOSE

To compare the cost-effectiveness of nonoperative management, particulated juvenile allograft cartilage (PJAC), and matrix-induced autologous chondrocyte implantation (MACI) in the management of patellar chondral lesions.

METHODS

A Markov model was used to evaluate the cost-effectiveness of three strategies for symptomatic patellar chondral lesions: 1) nonoperative management, 2) PJAC, and 3) MACI. Model inputs (transition probabilities, utilities, and costs) were derived from literature review and an institutional cohort of 67 patients treated with PJAC for patellar chondral defects (mean age 26 years, mean lesion size 2.7 cm²). Societal and payer perspectives over a 15-year time horizon were evaluated. The principal outcome measure was the incremental cost-effectiveness ratio (ICER) using a $100,000/quality-adjusted life year (QALY) willingness-to-pay threshold. Sensitivity analyses were performed to assess the robustness of the model and the relative effects of variable estimates on base case conclusions.

RESULTS

From a societal perspective, nonoperative management, PJAC, and MACI cost $4,140, $52,683, and $83,073 and were associated with 5.28, 7.22, and 6.92 QALYs gained, respectively. PJAC and MACI were cost-effective relative to nonoperative management (ICERs $25,010/QALY and $48,344/QALY, respectively). PJAC dominated MACI in the base case analysis by being cheaper and more effective, but this was sensitive to the estimated effectiveness of both strategies. PJAC remained cost-effective if PJAC and MACI were considered equally effective.

CONCLUSIONS

In the management of symptomatic patellar cartilage defects, PJAC and MACI were both cost-effective compared to nonoperative management. Because of the need for one surgery instead of two, and less costly graft material, PJAC was cheaper than MACI. Consequently, when PJAC and MACI were considered equally effective, PJAC was more cost-effective than MACI. Sensitivity analyses accounting for the lack of robust long-term data for PJAC or MACI demonstrated that the cost-effectiveness of PJAC versus MACI depended heavily on the relative probabilities of yielding similar clinical results.

LEVEL OF EVIDENCE

III, economic and decision analysis.

An Interactive Cognitive-Behavioural Multimedia Program Favourably Affects Pain and Kinesiophobia During Rehabilitation After Anterior Cruciate Ligament Surgery: An Effectiveness Trial

Psychological interventions have been found effective in helping athletes cope with the challenges associated with knee surgery. In this investigation, an interactive cognitive-behavioural multimedia program was evaluated as a means of delivering psychological interventions to individuals experiencing anterior cruciate ligament (ACL) surgery in a field trial with 69 ACL surgery patients (30 women and 39 men; 24 competitive athletes, 41 recreational athletes, and 4 nonathletes; M age = 35.01, SD = 11.98 years). Results indicated that compared to participants who received standard care, participants who received the multimedia program reported greater preoperative confidence in ability to cope, lower postoperative pain and kinesiophobia, and greater use and perceived utility of patient education materials. The findings suggest that the multimedia program has promise as an economical and effective means of educating and delivering psychological interventions to people experiencing ACL surgery and rehabilitation.

Pseudoaneurysm following hamstring tendon harvest in arthroscopic anterior cruciate ligament reconstruction: a case report

Background

Vascular injury is a very rare complication following arthroscopic knee surgery. This is the first report of pseudoaneurysm at the saphenous branch of the descending genicular artery complicating semitendinosus tendon harvest in arthroscopic anterior cruciate ligament reconstruction.

Case presentation

A 19-year-old male had developed large ecchymosis, focal swelling and tenderness around his posteromedial knee after an arthroscopic anterior cruciate ligament reconstruction. Compartment syndrome of the lower leg and deep vein thrombosis were ruled out. A pseudoaneurysm formation was confirmed through an angiography and coil embolization was performed. At one year follow up, the patient reported improved functional outcome with good stability of the knee. However, mild paresthesia over the posteromedial calf was noted due to the compression injury of the saphenous nerve by the hematoma.

Conclusions

The pseudoaneurysm was presumed to result from accidental vascular injury while dissecting the accessory bands of the semitendinosus and was successfully treated by coil embolization. Care must be taken to section the expansions of the hamstring tendon, especially when the patient presents with underlying coagulopathy or vascular disease.

INCORPORATING WORKLOAD MEASURES INTO REHABILITATION AFTER ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION: A CASE REPORT

Background

and purpose: Second anterior cruciate ligament (ACL) injury rates continue to be high, with a majority of injuries occurring soon after return-to-play, potentially because athletes may not be ready for the external load demands of the sport. Load metrics, tracked through wearable technology, may provide complementary information to standard limb symmetry indices in the return-to-play decision making process. The purpose of this case report was to quantify and monitor load using innovative technology during physical therapy rehabilitation after ACL reconstruction (ACLr) and compare to normative sport participation data.Case Description: The subject was a 12-year-old female soccer player that suffered an ACL injury followed by surgical reconstruction with a hamstring autograft and standard rehabilitation. Single-leg hop performance, isokinetic strength, and external loads (using wearable technology) were measured longitudinally during rehabilitation and analyzed at the time of return-to-play.Outcomes: The subject successfully achieved >90% LSI for isometric quadriceps strength (week 14), single leg hop battery (week 23), and isokinetic hamstrings (week 26) and quadriceps (week 31) strength by the time of return-to-play (week 39). At the time of return to play, external load metrics indicated that the subject's most intense rehabilitation session consisted of 36% less frequent movements, 38% lower total distances, and activity durations that were 29% lower than the expected demands of a match.

Discussion

Standard rehabilitation may underload patients relative to required sport demands. Measuring external load during the rehabilitation period may help clinicians adequately progress workload to the necessary demands of the patient's sport. With the current emphasis on restoring limb symmetry, clinicians may need to shift focus towards load preparation when returning a patient to their sport.Level of Evidence: 4Keywords: anterior cruciate ligament, load, rehabilitation, return to play, step count, movement system.

Evidence-based Risk Stratification for Sport Medicine Procedures During the COVID-19 Pandemic

Orthopaedic practices have been markedly affected by the emergence of the COVID-19 pandemic. Despite the ban on elective procedures, it is impossible to define the medical urgency of a case solely on whether a case is on an elective surgery schedule. Orthopaedic surgical procedures should consider COVID-19-associated risks and an assimilation of all available disease dependent, disease independent, and logistical information that is tailored to each patient, institution, and region. Using an evidence-based risk stratification of clinical urgency, we provide a framework for prioritization of orthopaedic sport medicine procedures that encompasses such factors. This can be used to facilitate the risk-benefit assessment of the timing and setting of a procedure during the COVID-19 pandemic.

Safer and Cheaper: An Enhanced Milestone-Based Return to Play Program After Anterior Cruciate Ligament Reconstruction in Young Athletes Is Cost-Effective Compared With Standard Time-Based Return to Play Criteria

BACKGROUND

Safe return to play (RTP) after anterior cruciate ligament (ACL) reconstruction is critical to patient satisfaction. Enhanced rehabilitation after ACL reconstruction with appropriate objective criteria for RTP may reduce the risk of subsequent injury. The cost-effectiveness of an enhanced RTP (eRTP) strategy relative to standard post-ACL reconstruction rehabilitation has not been investigated.

PURPOSE

To determine if an eRTP strategy after ACL reconstruction is cost-effective compared with standard rehabilitation.

STUDY DESIGN

Economic and decision analysis.

METHODS

A decision-analysis model was utilized to compare standard rehabilitation with an eRTP strategy, which includes additional neuromuscular retraining, advanced testing, and follow-up physician visits. Cost-effectiveness was evaluated from a payer perspective. Costs of surgical procedures and rehabilitation protocols, risks of graft rupture and contralateral ACL injury, risk reductions as a result of the eRTP strategy, and relevant health utilities were derived from the literature. An incremental cost-effectiveness ratio of <$100,000/quality-adjusted life-year was used to determine cost-effectiveness. Sensitivity analyses were performed on pertinent model parameters to assess their effect on base case conclusions. In the base case analysis, the eRTP strategy cost was conservatively estimated to be $969 more than the standard rehabilitation protocol. Completion of the eRTP strategy was considered to confer a 25% risk reduction for graft rupture in comparison with standard rehabilitation.

RESULTS

The eRTP strategy was more cost-effective than standard rehabilitation alone. Based on 1-way threshold analyses, the eRTP strategy was cost-effective as long as its additional cost over standard rehabilitation was <$2092 or the eRTP strategy decreased the incidence of contralateral ACL rupture by >13.8%.

CONCLUSION

The eRTP strategy in this study adds additional neuromuscular retraining and additional physician follow-up-as well as advanced testing goals upon which RTP is contingent-to traditional physical therapy. Our data suggest that these additions are cost-effective, even assuming only modest associated decreases in ACL graft failure. This study also determined that the only variable that had the potential to change the cost-effectiveness conclusion based on predetermined ranges was the additional cost of rehabilitation based on 1-way sensitivity analysis.

CLINICAL RELEVANCE

This study provides evidence of cost-effectiveness for payers, supporting the use of enhanced RTP programs. The sensitivity analyses herein may be used to determine if any given RTP program going forward is cost-effective, regardless of the exact components of the program.

Health State Utilities in Children and Adolescents With Osteochondritis Dissecans of the Knee

Background:

The impact of osteochondritis dissecans (OCD) lesions of the knee on a child’s health-related quality of life has not previously been quantified. Preference-based health utility assessment allows patients to assign quality-of-life valuations (utilities) to different health states and conditions.

Purpose:

To determine (1) patient-reported utility scores for health states associated with pediatric OCD lesions of the knee and (2) whether these scores are associated with patient demographics or disease severity.

Study Design:

Cross-sectional study; Level of evidence, 3.

Methods:

Children, adolescents, and young adults being treated for OCD of the knee were interviewed to assess utilities for each of the 6 health states commonly encountered in the treatment of OCD: (1) symptomatic lesion, (2) nonoperative rehabilitation, (3) postoperative rehabilitation, (4) intermediate treatment success, (5) early degenerative knee changes, and (6) successful treatment (asymptomatic). Patients were asked to assign health utilities to each state using a standardized feeling thermometer (scale, 0-100), which were converted to a health state utility (scale, 0-1 [1 = perfect health]). Utilities were reported with descriptive statistics, and comparative analyses were performed to test whether assignments were associated with patient age, sex, or whether the OCD lesion required surgical intervention.

Results:

A total of 100 participants treated or undergoing treatment for OCD were prospectively enrolled; 74% were male (n = 74). The median age at the time of survey was 15 years (interquartile range, 13-16.5 years). Utility scores were as follows: symptomatic OCD lesion, 0.15; nonoperative rehabilitation, 0.30; postoperative rehabilitation, 0.30; early degenerative changes, 0.58; intermediate treatment success, 0.65; and successful treatment, 1.0. Utility scores were not associated with age, sex, or whether the participant underwent surgical treatment for the OCD lesion.

Conclusion:

The current study quantified patient-reported utilities for 6 OCD lesion health states, which may be used for future health-related quality of life, decision analysis, and quality/safety/value studies. These utility scores were stable and not affected by patient age, sex, or treatment strategy.

A Cost-Effectiveness Analysis of Isolated Meniscal Repair Versus Partial Meniscectomy for Red-Red Zone, Vertical Meniscal Tears in the Young Adult

PURPOSE

To evaluate the cost-effectiveness of treating isolated red-red zone, vertical meniscal tears with either isolated meniscal repair (IMR) or partial meniscectomy (PM) in the young adult using conservative modeling.

METHODS

A decision-analytic Markov disease progression model with a 40-year horizon was created simulating outcomes after IMR or PM for an isolated meniscal tear. Event probabilities, costs, and utilities were used for the index procedures, and the development of osteoarthritis (OA) and subsequent need for knee arthroplasty were calculated or selected from the published literature. Differences in cost, difference in quality-adjusted life years (QALYs), and the incremental cost effect ratio were calculated to determine which index procedure is most cost effective.

RESULTS

Total direct costs from PM were modeled at $38,648, and the total direct costs of IMR were $23,948, resulting in a projected cost savings of $14,700 with IMR. There was a modeled gain in QALYs of 17 for PM and 21 for IMR, resulting in an increase in 4 QALYs for the IMR treatment group. This results in an incremental cost effect ratio of $3,935 per QALY, favoring IMR as the dominant procedure.

CONCLUSIONS

Meniscal repair for isolated red-red zone, vertical meniscal tears was predicted to have lower direct costs and improve QALYs compared with partial meniscectomy over 40-year modeling, indicating isolated meniscal repair to be the cost-effective procedure in the treatment of an isolated meniscal tear in the young adult population.

LEVEL OF EVIDENCE

Level 3: economic and decision analysis.

Editorial Commentary: Save the Meniscus? Show Me the Money!

The meniscus is known to play a vital role in the knee joint from, shock absorption to increased contact area to joint lubrication. Repairing a torn meniscus costs money, but it can be even more expensive to perform a partial meniscectomy over the long term. Moreover, meniscal repair may result in an improved quality of life for the patient. One must consider both quality of life and costs when addressing repairable meniscal tears in patients. Repairing a vertical meniscus tear in the red-red zone in a young adult is a cost-effective strategy.

Autograft or allograft for reconstruction of anterior cruciate ligament: a health economics perspective

PURPOSE

To assess the clinical and cost-effectiveness of allografts versus autografts in the reconstruction of anterior cruciate ligaments.

METHODS

Systematic review of comparative clinical effectiveness and cost-effectiveness analysis.

RESULTS

Both autograft and allograft reconstruction are highly effective. Recent studies show little difference in failure rates between autografts and allografts (about 6% and 7%, respectively). In cost-effectiveness analysis, the price differential is the main factor, making autografts the first choice. However, there will be situations, particularly in revision ACL reconstruction, where an allograft may be preferred, or may be the only reasonable option available.

CONCLUSION

In ACL reconstruction, clinical results with autografts are as good as or slightly better than with allografts. Allografts cost more, indicating that autografts are more cost-effective and should usually be first choice.

LEVEL OF EVIDENCE

II.

Editorial Commentary: Anterior Cruciate Ligament Costs Are Surprising

Given increasing health care costs and clinical equipoise on numerous topics, value calculations are critical. Cost-minimization analysis evaluates throughout a single episode of care. For anterior cruciate ligament reconstruction, this is a reasonable approach given that cost-effectiveness data have been published. Using Healthcare Cost and Utilization Project data, general anesthesia, anesthesia time, greater age, and medical comorbidities were correlated with higher costs. Among the surprising results were increased costs with male gender and Hispanic race. Interestingly, the location of the surgery, surgery center versus hospital, or meniscal repair did not significantly impact costs. This information can be used by physicians for cost comparison and factors that determine costs.

The Cost-Effectiveness of Meniscal Repair Versus Partial Meniscectomy in the Setting of Anterior Cruciate Ligament Reconstruction

PURPOSE

To compare the cost-effectiveness of anterior cruciate ligament (ACL) reconstruction with meniscal repair to ACL reconstruction with partial meniscectomy.

METHODS

A decision-analytic Markov disease progression model with a 40-year horizon was created simulating outcomes after both meniscal repair and partial meniscectomy at the time of ACL reconstruction. Event probabilities, costs, and utilities were used for the index procedures. The development of osteoarthritis and subsequent knee replacement were either calculated or selected from published literature. Difference in cost, difference in quality-adjusted life-years (QALYs), and incremental cost-effective ratio were calculated to determine which index procedure is most cost-effective.

RESULTS

There is total direct cost from ACL reconstruction with meniscus repair of $17,898 compared with that with partial meniscectomy of $24,768 (cost savings of $6,870). There was an estimated gain of 18.00 QALYs after ACL reconstruction with meniscus repair compared with 17.16 QALYs with partial meniscectomy (increase of 0.84 QALYs). In this scenario, meniscus repair is the dominant index procedure at the time of ACL reconstruction.

CONCLUSIONS

Meniscal repair at the time of ACL reconstruction is more cost-effective than partial meniscectomy.

LEVEL OF EVIDENCE

Level IV, economic and decision analysis.

The cost-effectiveness of the arthroscopic Bankart versus open Latarjet in the treatment of primary shoulder instability

BACKGROUND

The purpose of this study was to conduct a cost-effectiveness analysis of the arthroscopic Bankart and the open Latarjet in the treatment of primary shoulder instability.

METHODS

This cost-effectiveness study used a Markov decision chain and Monte-Carlo simulation. Existing literature was reviewed to determine the survivorship and complication rates of these procedures. Health utility states (EQ-5D and quality-adjusted life-years) of the Bankart and Latarjet were prospectively collected. Using these variables, the Monte-Carlo simulation was modeled 100,000 times.

RESULTS

In reviewing the literature, the overall recurrence rate is 14% after the arthroscopic Bankart and 8% after the open Latarjet. Postoperative health utility states were equal between the 2 procedures (mean EQ-5D, 0.930; P = .775). The Monte-Carlo simulation showed that the Bankart had an incremental cost-effectiveness ratio of $4214 and the Latarjet had an incremental cost-effectiveness ratio of $4681 (P < .001).

CONCLUSION

Both the arthroscopic Bankart and open Latarjet are highly cost-effective; however, the Bankart is more cost-effective than the Latarjet, primarily because of a lower health utility state after a failed Latarjet. Ultimately, the clinical scenario may favor Latarjet (ie, critical glenoid bone loss) in certain circumstances, and decisions should be made on a case by case basis.