Single-stage versus two-stage revision anterior cruciate ligament reconstruction: a systematic review

2018 ◽  
Vol 3 (6) ◽  
pp. 345-351 ◽  
Author(s):  
Cristin J Mathew ◽  
Jeremiah E Palmer ◽  
Bradley S Lambert ◽  
Joshua D Harris ◽  
Patrick C McCulloch
Keyword(s):  
Patient Reported Outcomes ◽  
Cruciate Ligament ◽  
Single Stage ◽  
Stage Versus ◽  
Clinical Failure ◽  
Two Stage ◽  
Patient Reported ◽  
Anterior Cruciate ◽  
Complex Cases

ImportanceDespite advances in surgical techniques and postoperative rehabilitation, long-term anterior cruciate ligament (ACL) graft rupture rate remains high. The increasing number of primary ACL reconstructions in an ageing population will lead to increasing revision reconstructions. Revision cases may have higher failure rates and worse patient-reported outcomes compared with primaries. While two-stage revisions may be indicated in certain complex cases, whether this is comparatively equivalent or even superior to revisions done in a single stage would assist preoperative planning.ObjectiveThe objective of this systematic review was to analyse and compare patient-reported outcomes and failure rate of single-stage versus two-stage revision ACL reconstruction.Evidence reviewUsing PubMed, MEDLINE Complete and Ovid MEDLINE databases, a review was performed using Preferred Reporting Items for Systematic Reviews and Meta-analysis guidelines to identify level I–IV outcomes of revision ACL reconstruction with a minimum follow-up of 24 months.FindingsThree studies reported outcomes of two-stage revisions with mean follow-up of 61.6 months, while 21 studies reported single-stage revisions with mean follow-up of 47.4 months. Pooled rate of two-stage revisions was 3.1% compared with 6.8% in single-stage (p=0.068). Clinical failure was reported in 5.1% of 79 two-stage patients compared with 13.8% of 533 single-stage patients (p<0.05). Within the single-stage cohort, there was a greater clinical failure rate (+8.7%, p<0.05) for patients with less than 48 months follow-up. Those with > 48 months follow-up had a higher rerupture rate (+5%, p<0.05) and a significantly greater sum of squared deviations (p<0.05) compared with those with < 48 months follow-up. Patient-reported outcomes have demonstrated two-stage revision patients with higher IKDC A and B scores than single-stage.Conclusions and relevanceAlthough two-stage revisions may be performed in more complex cases, there are limited short-term data available regarding their outcomes. Two-stage revisions demonstrated comparable clinical outcomes and lower rate of revision surgery and clinical failure compared with single-stage revisions. Studies with shorter follow-up (24–48 months) showed higher clinical failure rates. Those with longer follow-up (>48 months) showed higher graft rerupture rates. The decision to perform staged reconstruction should made on whether adequate tunnel placement and fixation can be established in a single setting.Level of evidenceLevel IV.

scholarly journals Satisfactory patient-reported outcomes at 5 years following primary repair with suture tape augmentation for proximal anterior cruciate ligament tears

2021 ◽  
Author(s):  
Graeme P. Hopper ◽  
Joanna M. S. Aithie ◽  
Joanne M. Jenkins ◽  
William T. Wilson ◽  
Gordon M. Mackay
Keyword(s):  
Anterior Cruciate Ligament ◽  
Patient Reported Outcomes ◽  
Primary Repair ◽  
Cruciate Ligament ◽  
Acl Repair ◽  
Patient Reported ◽  
Activity Scale ◽  
Anterior Cruciate ◽  
Suture Tape

Abstract Purpose An enhanced understanding of anterior cruciate ligament (ACL) healing and advancements in arthroscopic instrumentation has resulted in a renewed interest in ACL repair. Augmentation of a ligament repair with suture tape reinforces the ligament and acts as a secondary stabilizer. This study assesses the 5-year patient-reported outcomes of primary repair with suture tape augmentation for proximal ACL tears. Methods Thirty-seven consecutive patients undergoing ACL repair with suture tape augmentation for an acute proximal rupture were prospectively followed up for a minimum of 5 years. Patients with midsubstance and distal ruptures, poor ACL tissue quality, retracted ACL remnants and multiligament injuries were excluded. Patient-reported outcome measures were collated using the Knee Injury and Osteoarthritis Outcomes Score (KOOS), Visual Analogue Pain Scale (VAS-pain), Veterans RAND 12-Item Health Survey (VR-12) and the Marx Activity Scale. Patients with a re-rupture were identified. Results Three patients were lost to follow-up leaving 34 patients in the final analysis (91.9%). The mean KOOS at 5 years was 88.5 (SD 13.8) which improved significantly from 48.7 (SD 18.3) preoperatively (p < 0.01). The VAS score improved from 2.3 (SD 1.7) to 1.0 (SD 1.5) and the VR-12 score improved from 35.9 (SD 10.3) to 52.4 (SD 5.9) at 5 years (p < 0.01). However, the Marx activity scale decreased from 12.4 (SD 3.4) pre-injury to 7.3 (SD 5.2) at 5 years (p = 0.02). Six patients had a re-rupture (17.6%) and have since undergone a conventional ACL reconstruction for their revision surgery with no issues since then. These patients were found to be younger and have higher initial Marx activity scores than the rest of the cohort (p < 0.05). Conclusion Primary repair with suture tape augmentation for proximal ACL tears demonstrates satisfactory outcomes in 28 patients (82.4%) at 5-year follow-up. Six patients sustained a re-rupture and have no ongoing problems following treatment with a conventional ACL reconstruction. These patients were significantly younger and had higher initial Marx activity scores. Level of evidence Level IV.

scholarly journals Arthroscopic Primary Repair of Proximal Anterior Cruciate Ligament Tears: With or Without Additional Suture Augmentation?

2018 ◽  
Vol 6 (7_suppl4) ◽  
pp. 2325967118S0006 ◽  
Author(s):  
Anne Jonkergouw ◽  
Jelle P. van der List ◽  
Gregory S. DiFelice
Keyword(s):  
Range Of Motion ◽  
Patient Reported Outcomes ◽  
Suture Anchor ◽  
Primary Repair ◽  
Cruciate Ligament ◽  
Type I ◽  
Acl Repair ◽  
Patient Reported ◽  
Anterior Cruciate

Objectives: Over the last years, arthroscopic primary repair of anterior cruciate ligament (ACL) tears has shown excellent results owing to appropriate patient selection (only repairing proximal ACL tears and good tissue quality), minimal invasive surgery (arthroscopy) and focus on early range of motion. Some surgeons have repaired proximal ACL tears without suture augmentation while others have used internal suture augmentation to reinforce and thus protect the repaired ligament during range of motion. No studies have yet compared the two surgical techniques. The objective of this study was to compare failure rates, reoperation rates and patient-reported outcomes of arthroscopic primary repair with versus without suture augmentation. Methods: A retrospective search for all patients treated with suture anchor arthroscopic primary ACL repair between April 2008 and June 2016 was performed. All patients with isolated proximal ACL tears (type I) were included. Since the development of internal suture augmentation, this reinforcement was added to the repaired ACLs. Minimum follow-up length was 1.0 years. Results: A total of 56 patients were included (mean age 33 years (range: 14 - 57), 59% male) of which 28 (50%) patients received additional suture augmentation. Mean follow-up was 2.3 years (range: 1.0-9.2). Six of all patients had reruptured their repaired ACL (10.7%), of which four underwent uncomplicated ACL reconstruction and two were treated conservatively. Four reruptures were initially treated with primary repair only (4/28, 14.3%) and two patients with additional suture augmentation (2/28, 7.1%; p = 0.431). During follow-up, three patients underwent reoperation (5.4%; two for medial meniscus tear (one in each group) and one for tibial suture anchor removal of the suture augmentation). Patient-reported outcomes have so far been collected in 20 patients without reruptures (currently collecting), with mean Lysholm score of 96, modified Cincinnati 94, SANE 93, pre-injury Tegner 6.7, postoperative Tegner 6.3 and subjective IKDC 91. Objective IKDC was A in 90%, B in 5%, C in 5%. Conclusion: In this study, the total failure rate of arthroscopic primary ACL repair was 10.7% and was lower with additional suture augmentation (7.1%) than primary repair alone (14.3%). Patients with failed ACL repair underwent uncomplicated primary ACL reconstruction. We recommend adding suture augmentation in high-risk patients (i.e. adolescents, ones with hyperlaxity, high contact sports), to protect the repaired ligament, especially during early range of motion. These data support treating type I proximal ACL tears with arthroscopic primary repair.

scholarly journals Poor Associations Between Radiographic Tibiofemoral Osteoarthritis and Patient-Reported Outcomes at 16 Years After Anterior Cruciate Ligament Reconstruction

2020 ◽  
Vol 8 (9) ◽  
pp. 232596712095117
Author(s):  
Fredrik Identeg ◽  
Eric Hamrin Senorski ◽  
Eleonor Svantesson ◽  
Kristian Samuelsson ◽  
Ninni Sernert ◽  
...  
Keyword(s):  
Acl Reconstruction ◽  
Patient Reported Outcomes ◽  
Cruciate Ligament ◽  
Patient Reported ◽  
Long Term Follow Up ◽  
Ikdc Score ◽  
Anterior Cruciate ◽  
Grade 3

Background: Radiographic tibiofemoral (TF) osteoarthritis (OA) is common in patients after anterior cruciate ligament (ACL) reconstruction at long-term follow-up. The association between radiographic OA and patient-reported outcomes has not been thoroughly investigated. Purpose: To determine the association between radiographic TF OA and patient-reported outcome measure (PROM) scores at 16 years after ACL reconstruction. Study Design: Case-control study; Level of evidence, 3. Methods: This study was based on 2 randomized controlled studies comprising 193 patients who underwent unilateral ACL reconstruction. A long-term follow-up was carried out at 16.4 ± 1.7 years after surgery and included a radiographic examination of the knee and recording of PROM scores. Correlation analyses were performed between radiographic OA (Kellgren-Lawrence [K-L], Ahlbäck, and cumulative Fairbank grades) and the PROMs of the International Knee Documentation Committee (IKDC) subjective knee form, Lysholm score, and Tegner activity scale. A linear univariable regression model was used to assess how the IKDC score differed with each grade of radiographic OA. Results: Of 193 patients at baseline, 147 attended the long-term follow-up. At long-term follow-up, 44.2% of the patients had a K-L grade of ≥2 in the injured leg, compared with 6.8% in the uninjured leg. The mean IKDC score at follow-up was 71.2 ± 19.9. Higher grades of radiographic OA were significantly correlated with lower IKDC and Lysholm scores ( r = –0.36 to –0.22). Patients with a K-L grade of 3 to 4 had significantly lower IKDC scores compared with patients without radiographic OA (K-L grade 0-1). Adjusted beta values were –15.7 (95% CI, –27.5 to –4.0; P = .0093; R 2 = 0.09) for K-L grade 3 and –25.2 (95% CI, –41.7 to –8.6; P = .0033; R 2 = 0.09) for K-L grade 4. Conclusion: There was a poor but significant correlation between radiographic TF OA and more knee-related limitations, as measured by the IKDC form and the Lysholm score. Patients with high grades of radiographic TF OA (K-L grade 3-4) had a statistically significant decrease in IKDC scores compared with patients without radiographic TF OA at 16 years after ACL reconstruction. No associations were found between radiographic TF OA and the Tegner activity level.

scholarly journals Influence of Meniscal and Chondral Lesions on Patient-Reported Outcomes After Primary Anterior Cruciate Ligament Reconstruction at 2-Year Follow-up

2018 ◽  
Vol 6 (2) ◽  
pp. 232596711775418 ◽  
Author(s):  
Mark E. Cinque ◽  
Jorge Chahla ◽  
Justin J. Mitchell ◽  
Gilbert Moatshe ◽  
Jonas Pogorzelski ◽  
...  
Keyword(s):  
Acl Reconstruction ◽  
Patient Reported Outcomes ◽  
Cruciate Ligament ◽  
Chondral Lesions ◽  
Meniscal Lesions ◽  
Patient Reported ◽  
Outcome Scores ◽  
The Mean ◽  
Anterior Cruciate

Background: Meniscal and chondral lesions are commonly associated with anterior cruciate ligament (ACL) tears, and these lesions may play a role in patient outcomes after ACL reconstruction. Purpose: To determine the effects of the presence and location of meniscal and chondral lesions at the time of ACL reconstruction on patient-reported outcomes at a minimum 2-year follow-up. Study Design: Cohort study; Level of evidence, 3. Methods: Patients with no prior knee surgery who underwent primary ACL reconstruction by a single surgeon between 2010 and 2014 were included in this study. Those meeting inclusion criteria were divided into the following groups based on the arthroscopic diagnosis: patients without concomitant meniscal or chondral lesions, patients with isolated meniscal lesions, patients with isolated chondral lesions, and patients with both chondral and meniscal lesions. Patient-reported outcomes (Short Form–12 [SF-12] physical component summary [PCS] and mental component summary [MCS], Western Ontario and McMaster Universities Osteoarthritis Index [WOMAC], and Lysholm scale) were assessed at a minimum of 2 years from the index surgery. Results: A total of 151 patients met the inclusion criteria and were included in the study. The mean age at the time of surgery was 36.2 years (range, 14-73 years), and the mean follow-up was 3.2 years (range, 2.0-5.6 years). At the time of surgery, 33 (22%) patients had no concomitant lesions and served as the control group, 63 (42%) patients had isolated meniscal lesions, 21 (14%) patients had isolated chondral lesions, and 34 (22%) patients had both chondral and meniscal lesions. There was significant improvement in all outcome scores postoperatively for the 3 groups ( P < .05 for all outcome scores). The presence of a meniscal tear and laterality of the meniscal lesion did not have a negative effect on any postoperative outcome scores. Patients with isolated chondral lesions had significantly lower postoperative WOMAC scores compared with patients without chondral lesions ( P < .05). No significant differences were found for all other scores. Patients with patellofemoral chondral lesions had significantly lower postoperative SF-12 PCS and Lysholm scores than patients with tibiofemoral chondral lesions ( P < .05). Conclusion: Patients with ACL tears achieved improved functional scores at a mean 3.2 years after ACL reconstruction. While meniscal lesions did not affect postoperative outcomes in the short term, chondral lesions were identified as a predictor for worse outcomes.

scholarly journals Clinical outcomes after anterior cruciate ligament injury: Panther Symposium ACL Injury Clinical Outcomes Consensus Group

2020 ◽  
Vol 5 (5) ◽  
pp. 281-294
Author(s):  
Eleonor Svantesson ◽  
Eric Hamrin Senorski ◽  
Kate E Webster ◽  
Jón Karlsson ◽  
Theresa Diermeier ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Clinical Outcomes ◽  
Patient Reported Outcomes ◽  
Cruciate Ligament ◽  
Acl Injury ◽  
Consensus Meeting ◽  
Comprehensive Assessment ◽  
Patient Reported ◽  
Anterior Cruciate

PurposeA stringent outcome assessment is a key aspect for establishing evidence-based clinical guidelines for anterior cruciate ligament (ACL) injury treatment. The aim of this consensus statement was to establish what data should be reported when conducting an ACL outcome study, what specific outcome measurements should be used and at what follow-up time those outcomes should be assessed.MethodsTo establish a standardised assessment of clinical outcome after ACL treatment, a consensus meeting including a multidisciplinary group of ACL experts was held at the ACL Consensus Meeting Panther Symposium, Pittsburgh, PA, USA, in June 2019. The group reached consensus on nine statements by using a modified Delphi method.ResultsIn general, outcomes after ACL treatment can be divided into four robust categories—early adverse events, patient-reported outcomes, ACL graft failure/recurrent ligament disruption, and clinical measures of knee function and structure. A comprehensive assessment following ACL treatment should aim to provide a complete overview of the treatment result, optimally including the various aspects of outcome categories. For most research questions, a minimum follow-up of 2 years with an optimal follow-up rate of 80% is necessary to achieve a comprehensive assessment. This should include clinical examination, any sustained re-injuries, validated knee-specific patient-reported outcomes and Health-Related Quality of Life questionnaires. In the mid-term to long-term follow-up, the presence of osteoarthritis should be evaluated.ConclusionThis consensus paper provides practical guidelines for how the aforementioned entities of outcomes should be reported and suggests the preferred tools for a reliable and valid assessment of outcome after ACL treatment.Level of EvidenceLevel V.

scholarly journals Patient-Reported Outcomes, Return-to-Sport Status, and Reinjury Rates After Anterior Cruciate Ligament Reconstruction in Adolescent Athletes: Minimum 2-Year Follow-up

2020 ◽  
Vol 8 (11) ◽  
pp. 232596712096447
Author(s):  
Lilah Fones ◽  
Regina O. Kostyun ◽  
Andrew D. Cohen ◽  
J. Lee Pace
Keyword(s):  
Anterior Cruciate Ligament ◽  
Patient Reported Outcomes ◽  
Cruciate Ligament ◽  
Return To Sport ◽  
Knee Function ◽  
Adolescent Athletes ◽  
Patient Reported ◽  
Adolescent Patients ◽  
Anterior Cruciate

Background: Significant variation exists in the published rates of return to sport after anterior cruciate ligament (ACL) reconstruction (ACLR). Functional outcomes and psychological response to injury have been implicated as factors that influence return to sport. Most studies focus on patients aged in the mid-20s, and less is known about this topic in adolescents. Purpose: To report midterm ACLR results for adolescent patients with regard to return to primary sport, patient-reported outcomes, and reinjury rate. Study Design: Case-control study; Level of evidence, 3. Methods: Adolescent athletes were contacted at a minimum of 2 years after ACLR. Patients completed 2 patient-reported outcome measures, the ACL--Return to Sport After Injury (ACL-RSI) and the International Knee Documentation Committee (IKDC) subjective form, and responded to questions regarding preinjury primary sport and level of competition, post-ACLR return to primary sport status, and reinjury. Results: A total of 74 patients (mean ± SD surgical age, 15.9 ± 1.5 years; follow-up age, 19.9 ± 2.0 years; response rate, 24.5%) completed the surveys at a mean of 4.0 ± 2.0 years after primary ACLR. Outcome scores averaged 90.3 ± 12.3 for IKDC and 81.6 ± 20.4 for ACL-RSI. Questionnaire responses indicated that 27.0% of patients did not return to or sustain primary sport participation after ACLR; the principal reasons were poor knee function, team/training change, and fear of another injury. Both IKDC and ACL-RSI scores were statistically lower in patients who did not successfully return to their primary sport in contrast to patients who successfully resumed their primary sport (IKDC, P = .026; ACL-RSI, P < .001). IKDC and ACL-RSI scores were moderately positively correlated with one another ( r Spearman = 0.60). There were 18 patients (reinjury rate, 24.3%) who suffered another ACL injury; 8 of these injuries included ipsilateral ACL graft tear (retear rate, 10.8%). Conclusion: In our cohort, 73% of adolescent patients successfully returned to their primary preinjury sport at a minimum of 2 years after ACLR. Both knee function and psychological responses to injury were important in determining an adolescent athlete’s return to sport. The findings support the use of the IKDC and ACL-RSI at midterm follow-up, with higher scores associated with a greater likelihood of adolescent patients returning to sport after ACLR.

Revision Anterior Cruciate Ligament Reconstruction Outcomes at a Minimum of 5-Year Follow-Up: A Systematic Review

2018 ◽  
Vol 32 (03) ◽  
pp. 218-221 ◽  
Author(s):  
Lea Johnson ◽  
Robert Brophy ◽  
Ljiljana Bogunovic ◽  
Matthew Matava ◽  
Matthew Smith ◽  
...  
Keyword(s):  
Systematic Review ◽  
Anterior Cruciate Ligament ◽  
Acl Reconstruction ◽  
Patient Reported Outcomes ◽  
Cruciate Ligament ◽  
Level Of Evidence ◽  
Revision Acl Reconstruction ◽  
Patient Reported ◽  
Anterior Cruciate

AbstractRevision anterior cruciate ligament (ACL) reconstruction typically has worse outcomes than primary reconstructions. Minimal long-term data exist regarding 5-year results. We chose to perform a systematic review to evaluate midterm (5-year) revision ACL reconstruction outcomes (patient-reported outcomes, reoperation, stability, arthritis) in comparison to primary ACL reconstructions at similar time points. Embase, Cochrane, and PubMed databases were queried, and four studies met the inclusion criteria. Two authors reviewed and performed data extraction. All were level 4 studies. Review of the studies demonstrated that results at 5 years are consistently worse than those noted in primary reconstructions for objective and patient-reported outcomes. Revision ACL reconstruction outcomes remain worse than primary reconstructions at midterm 5-year follow-up. The level of evidence is 4.

scholarly journals A Controlled Comparison of Microfracture, Debridement, and No Treatment of Concomitant Full-Thickness Cartilage Lesions in Anterior Cruciate Ligament–Reconstructed Knees: A Nationwide Prospective Cohort Study From Norway and Sweden of 368 Patients With 5-Year Follow-up

2018 ◽  
Vol 6 (8) ◽  
pp. 232596711878776 ◽  
Author(s):  
Svend Ulstein ◽  
Asbjørn Årøen ◽  
Lars Engebretsen ◽  
Magnus Forssblad ◽  
Stein Håkon Låstad Lygre ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Cohort Study ◽  
Surgical Treatment ◽  
Patient Reported Outcomes ◽  
Cruciate Ligament ◽  
Full Thickness ◽  
Cartilage Lesions ◽  
Patient Reported ◽  
Anterior Cruciate

Background: The effect of microfracture (MF) or surgical debridement of concomitant full-thickness cartilage lesions in anterior cruciate ligament–reconstructed knees on patient-reported outcomes remains to be determined. Purpose: To evaluate the effect of debridement or MF compared with no surgical treatment of concomitant full-thickness cartilage lesions on patient-reported outcomes 5 years after anterior cruciate ligament reconstruction (ACLR). Study Design: Cohort study; Level of evidence, 2. Methods: Included in this study were 644 patients who were registered in the Norwegian and the Swedish National Knee Ligament Registries from 2005 to 2008 as having undergone unilateral primary ACLR and having a concomitant full-thickness cartilage lesion (International Cartilage Repair Society [ICRS] grades 3-4). Of these patients, 129 were treated with debridement, 164 were treated with MF, and 351 received no surgical treatment simultaneously with ACLR. At 5-year follow-up, 368 (57%) patients completed results on the Knee injury and Osteoarthritis Outcome Score (KOOS). Multivariable linear regression was used to estimate the effect of surgical debridement or MF of concomitant full-thickness cartilage lesions on patient-reported outcomes 5 years after ACLR. Results: Compared with no surgical treatment, there were no unadjusted or adjusted effects of debridement or MF of concomitant full-thickness cartilage lesions on KOOS scores at 5-year follow-up. Conclusion: Compared with leaving concomitant full-thickness cartilage lesions untreated at the time of ACLR, debridement and MF showed no effect on patient-reported outcomes 5 years after surgery.

scholarly journals Single-Stage Revision Anterior Cruciate Ligament Reconstruction: Experience with 92 cases (41 elite athletes), Using an Algorithm

2020 ◽  
Vol 8 (7_suppl6) ◽  
pp. 2325967120S0050
Author(s):  
Kyle Borque ◽  
Mary Jones ◽  
Simon Ball ◽  
Andy Williams ◽  
Nathan White
Keyword(s):  
Graft Failure ◽  
Elite Athletes ◽  
Cruciate Ligament ◽  
Single Stage ◽  
Return To Play ◽  
Two Stage ◽  
Post Surgery ◽  
Anterior Cruciate ◽  
Tegner Score

Objectives: The increased prevalence of anterior cruciate ligament (ACL) reconstructions has led to an increased need for revision ACL reconstructions. Despite the lack of comparative literature, two-stage revisions are often undertaken under the pretense they are safer. Through careful patient selection, pre-operative planning, and meticulous attention to detail, single stage revisions can be performed with good outcomes, decreasing healthcare costs, morbidity and recovery time for the patient. The objective of this paper is to present an algorithm (Figure 1) to determine single-stage or two-stage approaches to ACL revision with good outcomes in recreational and elite athletes. Methods: All revision ACL reconstructions performed by the senior author from September 2009 to July 2016, with minimum two year follow-up, were retrospectively reviewed. Outcomes measured were: any further surgery, graft re-rupture, re-revision, Tegner score, and knee injury and osteoarthritis outcomes score (KOOS). For the elite athlete population, return to play time, duration and level compared to pre-injury were also determined. Results: Ninety-four procedures were performed in 93 patients. This included 41 in elite athletes. In this series only 2 (2%) two-stage procedures were undertaken. At an average of 4.3 years (range: 2-8.5 years) post surgery, there had been two re-revisions. There were two further instances of graft failure which had not been re-revised. The graft failure rate was therefore 4.3%. There were 17 subsequent procedures, including six arthroscopic partial meniscectomies, five removal of prominent implants, and one total knee arthroplasty. The average Tegner score was 8.2 preoperatively, and 7.1 at follow up. At follow up, the average KOOS scores were 79.3 for symptoms, 88.0 for pain, 94.2 for activities of daily living, 73.6 for sport, and 68.9 for quality of life. Thirty-six of 41 elite athletes returned to play, at an average of 338 days post surgery. At an average of 4.6 years, 29 were still playing professionally. Of these, 15 were at the same level, and 14 at a lower level. Five players returned to play but have since retired. This occurred at an average of 3.1 years post op, at an age of 30. Conclusion: Single stage ACL revisions can be performed reliably in the majority, but not all, patients with persistent or recurrent instability following failed ACL reconstruction with good clinical outcomes and return to play, even in the elite athletic population. [Figure: see text]

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