Armando Vidal

Armando Vidal
The Steadman Clinic · Department of Orthopaedic Surgery

About

125
Publications
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Publications

Publications (125)
Article
Background Lytic or malpositioned tunnels may require bone grafting during revision anterior cruciate ligament reconstruction (rACLR) surgery. Patient characteristics and effects of grafting on outcomes after rACLR are not well described. Purpose To describe preoperative characteristics, intraoperative findings, and 2-year outcomes for patients wi...
Article
Objectives Lateral meniscus deficiency with valgus malalignment increases the risk and rate of lateral compartment osteoarthritis. Lateral meniscus allograft transplantation (LMAT) with concomitant varus-producing lateral opening wedge distal femoral osteotomy (LOWDFO) is an available option to treat this pathology. No biomechanical data currently...
Article
Objectives Lateral extra-articular tenodesis (LET) is being performed more frequently with anterior cruciate ligament reconstruction (ACLR) to decrease graft failure rates. Posterior tibial slope (PTS) affects ACL graft failure rates. ² The impact of LET plus ACLR on tibial motion and graft forces with increasing PTS has not been elucidated. We hyp...
Article
Background Patients with anterior cruciate ligament (ACL) revision report lower outcome scores on validated knee questionnaires postoperatively compared to cohorts with primary ACL reconstruction. In a previously active population, it is unclear if patient-reported outcomes (PROs) are associated with a return to activity (RTA) or vary by sports par...
Article
Background Lateral extra-articular tenodesis (LET) is being performed with increasing frequency in the setting of anterior cruciate ligament reconstruction (ACLR) as a way to decrease rotational instability and graft failure rates, especially in young, active patients. The degree of posterior tibial slope has been shown to affect ACL graft failure...
Article
Knowledge of anatomy and physiology of the meniscus is essential for appropriate treatment. The unique anatomy of the medial and lateral meniscus and blood supply play an important role in decision making. Controversy exists regarding the optimal treatment of meniscal tears including débridement, repair, root repair, and transplantation. The unique...
Article
Multiple meniscal repair techniques exist, and successful healing and excellent patient outcomes have been reported with a variety of all-inside and open techniques. Increased awareness and recognition of root tears and meniscocapsular separations are topics of recent interest. The ideal treatment of these injuries remains uncertain, and definitive...
Article
Background The effect of coronal plane alignment on the outcomes of repairs of the medial meniscus root remains unclear. Hypothesis Increased preoperative varus alignment is associated with higher failure rates and lower patient-reported outcomes (PROs) after isolated repair of the medial meniscus root. Study Design Case series; Level of evidence...
Article
Background: Fatty infiltration (FI) is one of the most important prognostic factors for outcomes after rotator cuff surgery. Established risk factors include advancing age, larger tear size, and increased tear chronicity. A growing body of evidence suggests that sex and obesity are associated with FI; however, data are limited. Methods: We recru...
Article
Full-text available
Burke, J, Geller, JS, Perez, JR, Naik, K, Vidal, AF, Baraga, MG, and Kaplan, LD. The effect of passing plays on injury rates in the national football league. J Strength Cond Res 35(12S): S1-S4, 2021-The National Football League (NFL) has one of the highest all-cause injury rates in sports, yet our understanding of extrinsic injury risk factors is l...
Article
Purpose To compare the biomechanical properties of the knotted versus knotless transosseous equivalent (TOE) techniques for rotator cuff repair (RCR). Methods A systematic review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines using PubMed, Embase, and the Cochrane Library to id...
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Partial meniscectomy or failed meniscus repair can lead to pain, dysfunction, and cartilage degradation due to increased contact forces. Meniscus transplantation can lead to favorable outcomes and cartilage preservation with careful patient selection. Limited data exist on segmental meniscus allograft transplantation, with promising results using s...
Article
Background Meniscal deficiency has been reported to increase contact pressures in the affected tibiofemoral joint, possibly leading to degenerative changes. Current surgical options include meniscal allograft transplantation and insertion of segmental meniscal scaffolds. Little is known about segmental meniscal allograft transplantation. Purpose T...
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Background When meniscal repair is performed during anterior cruciate ligament (ACL) reconstruction (ACLR), the effect of ACL graft type on meniscal repair outcomes is unclear. Hypothesis The authors hypothesized that meniscal repairs would fail at the lowest rate when concomitant ACLR was performed with bone--patellar tendon--bone (BTB) autograft...
Article
Purpose The purpose of this systematic review is to evaluate the current literature in an effort to investigate sleep quality and disturbances and the association with clinical outcomes of patients undergoing shoulder surgery. Methods A systematic review of the PubMed, Embase, and Cochrane Library databases was performed according to PRISMA guidel...
Article
Background: Articular cartilage and meniscal damage are commonly encountered and often treated at the time of anterior cruciate ligament reconstruction (ACLR). Our understanding of how these injuries and their treatment relate to outcomes of ACLR is still evolving. Hypothesis/purpose: The purpose of this study was to assess whether articular car...
Article
Background Although graft choice may be limited in the revision setting based on previously used grafts, most surgeons believe that graft choice for anterior cruciate ligament (ACL) reconstruction is an important factor related to outcome. Hypothesis In the ACL revision setting, there would be no difference between autograft and allograft in rerup...
Article
Purpose The purpose of this study is (1) to determine if, when optimizing modern techniques, medial opening-wedge osteotomies can effectively maintain tibial slope and (2) to determine how different magnitude coronal plane corrections affect tibial slope. Methods Proximal tibial osteotomies (PTOs) were performed on 10 fresh frozen cadaveric knees...
Article
Joint preservation strategies in young, active patients are a challenge, particularly in those with combined cartilage and meniscal deficiency. Concomitant malalignment and/or ligamentous insufficiency are not uncommon and further add to the complex nature of these patients. In patients who require surgery, a complete treatment strategy must be dev...
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Full-text available
Background A paucity of literature exists on the outcomes following Latarjet for anterior shoulder instability in seizure disorder patients. Purpose To determine the effectiveness of the Latarjet procedure for anterior shoulder instability in seizure disorder patients. Methods A retrospective review of patients undergoing Latarjet from 2013-2017...
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Ruptures of the patellar tendon are rare but potentially devastating injuries reported to occur most commonly in active males in their third and fourth decades of life. Repair failure rates have been reported to range between 2% and 50% based on surgical technique used. There are several inherent challenges associated with revision patellar tendon...
Article
Infection is a rare occurrence after revision anterior cruciate ligament reconstruction (rACLR). Because of the low rates of infection, it has been difficult to identify risk factors for infection in this patient population. The purpose of this study was to report the rate of infection following rACLR and assess whether infection is associated with...
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Full-text available
Purpose The purpose of this systematic review was to examine the effect that sex has on recurrence of anterior shoulder instability following primary arthroscopic anterior shoulder stabilization. Methods A systematic review using PRISMA guidelines was performed by searching PubMed, Embase and Cochrane Library databases to identify studies reportin...
Article
Osteochondral autograft transfer (OATS) is a one-stage surgical procedure to treat chondral defects of the knee and other articulating surfaces. Optimal treatment for symptomatic knee lesions remains controversial. Osteochondral autograft transfer is one of several approaches to cartilage repair. Other techniques include marrow stimulation, cell-ba...
Article
Background Meniscal preservation has been demonstrated to contribute to long-term knee health. This has been a successful intervention in patients with isolated tears and tears associated with anterior cruciate ligament (ACL) reconstruction. However, the results of meniscal repair in the setting of revision ACL reconstruction have not been document...
Article
Background The cause of subsequent surgery after anterior cruciate ligament (ACL) reconstruction varies, but if risk factors for specific subsequent surgical procedures can be identified, we can better understand which patients are at greatest risk. Purpose To report the incidence and types of subsequent surgery that occurred in a cohort of patien...
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Objectives To evaluate the accuracy of correction angle of an all-PEEK medial opening wedge high tibial osteotomy (HTO) system, as well as determine the effect of correction angle on postoperative complications. Methods Retrospective review was performed on patients who underwent an HTO by the senior author using an all-PEEK HTO system between 201...
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Background There remains a paucity of literature comparing clinical outcomes after anterior cruciate ligament reconstruction (ACLR) between skiers and non-skiers, particularly in older patient populations. Purpose To compare clinical outcomes after ACLR between skiers and non-skiers, with a subanalysis based on age. Study Design Cohort study; Lev...
Article
Background The purpose of this study was to describe the clinical outcomes following bilateral total shoulder arthroplasty (TSA). Methods A systematic search of the PubMed, Embase, and Cochrane Library databases following PRISMA guidelines was performed. English-language literature published from 2010 to 2018 analyzing bilateral TSA (anatomic and/...
Chapter
Sports-related clavicle injuries are common. About half of clavicle fractures are due to sport activities. Injuries to the acromioclavicular (AC) joint are more common than injuries to the sternoclavicular (SC) joint. The typical mechanism of injury in sports is a fall or contact with another person or object. Most of these injuries can be managed...
Chapter
CrossFit has emerged as a very popular and effective fitness routine for athletes of all ages. The incorporation of gymnastics, Olympic lifting, and high-intensity cardiovascular exercise exposes many participants to activities that they have not performed in years or possibly ever. Understanding the components of CrossFit, the most common injury p...
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Background Knot tying is a crucial component of successful arthroscopic shoulder surgery. It is currently unknown whether sliding or nonsliding techniques result in superior clinical outcomes. Purpose To assess the clinical outcomes of arthroscopic sliding knot (SK)– versus nonsliding knot (NSK)–tying techniques during arthroscopic shoulder surger...
Article
Background There is no consensus on technique of choice for repair of bucket-handle meniscal tears (BHMTs). Purpose To determine factors that affect patient outcomes and failure rates in patients undergoing all-inside repairs of BHMTs. Study Design Systematic review. Methods A systematic review of 3 databases using PRISMA (Preferred Reporting It...
Article
Background Physicians’ and patients’ decision-making process between bone–patellar tendon–bone (BTB) and hamstring tendon autografts for anterior cruciate ligament (ACL) reconstruction (ACLR) may be influenced by a variety of factors in the young, active athlete. Purpose To determine the incidence of both ACL graft revisions and contralateral ACL...
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Full-text available
Background Arthroscopic capsular release (ACR) for the treatment of adhesive capsulitis of the shoulder can be performed in either the beach-chair (BC) or lateral decubitus (LD) position. Purpose To determine the clinical outcomes and recurrence rates after ACR in the BC versus LD position. Study Design Systematic review; Level of evidence, 4. M...
Article
Background Understanding the risk factors for loss to follow-up in prospective clinical studies may allow for a targeted approach to minimizing follow-up bias and improving the generalizability of conclusions in anterior cruciate ligament reconstruction (ACLR) and other sports-related interventions. Purpose To identify independent risk factors ass...
Article
It is imperative that surgeons educate their patients on what to expect following a meniscectomy.A high preinjury activity level, younger age, medial meniscectomy, and smaller meniscal resection play a role in reducing the time until patients are able to return to sport.Improved clinical outcomes can be expected for male patients without obesity wh...
Article
Background Patient-reported outcomes (PROs) are a valid measure of results after revision anterior cruciate ligament (ACL) reconstruction. Revision ACL reconstruction has been documented to have worse outcomes when compared with primary ACL reconstruction. Understanding positive and negative predictors of PROs will allow surgeons to modify and pote...
Article
Full-text available
Objectives The success rate of meniscal repair is known to increase with concurrent anterior cruciate ligament (ACL) reconstruction. However, the influence of ACL graft choice has not been described. The current study examines the effect of ACL graft choice on the outcome of meniscal repair performed in conjunction with ACL reconstruction (ACLR)....
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Background Injuries to the posterolateral corner (PLC) may occur concurrently with anterior cruciate ligament (ACL) injury. Purpose/Hypothesis This study evaluated the outcomes of patients who underwent operative management of PLC injuries concurrently with ACL reconstruction in a prospective multicenter cohort. We hypothesized that there would be...
Article
Background: Anterior cruciate ligament (ACL) revision cohorts continually report lower outcome scores on validated knee questionnaires than primary ACL cohorts at similar time points after surgery. It is unclear how these outcomes are associated with physical activity after physician clearance for return to recreational or competitive sports after...
Article
Background: No consensus is available regarding the optimal choice of bone graft material for bone tunnel augmentation in revision anterior cruciate ligament (ACL) surgery. Purpose: To compare the outcomes of different bone graft materials for staged revision ACL reconstruction. Study design: Systematic review. Methods: A systematic review u...
Article
Purpose: To evaluate differences in repair and nonoperatively managed grade III medial collateral ligament (MCL) injuries during anterior cruciate ligament (ACL) reconstruction. Methods: Patients enrolled in a multicenter prospective longitudinal group who underwent unilateral primary ACL reconstruction between 2002 and 2008 were evaluated. Pati...
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Background Recent studies have described surgical techniques to increase the hamstring graft diameter for anterior cruciate ligament reconstruction (ACLR), particularly for 5-strand hamstring (5HS) autografts. Purpose To review the literature examining the biomechanical and clinical outcomes of 5HS autografts for ACLR. Study Design Systematic rev...
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Full-text available
Background Arthroscopic posterior shoulder stabilization can be performed with patients in the beach-chair (BC) and the lateral decubitus (LD) positions; however, the impact of patient positioning on clinical outcomes has not been evaluated. Purpose To compare clinical outcomes and recurrence rates after arthroscopic posterior shoulder stabilizati...
Article
The purpose of this study was to report the demographics and clinical outcomes of patients at our institution following anterior cruciate ligament reconstruction (ACLR) with a planned or unplanned hybrid autograft–allograft. At a minimum 2-year follow-up, patients at our institution who had undergone primary ACLR with a planned (P) or unplanned (U)...
Article
Background: Knee laxity in the setting of anterior cruciate ligament (ACL) injury is often assessed through physical examination using the Lachman, pivot shift, and anterior drawer tests. The degree of laxity noted on these examinations may influence treatment decisions and prognosis. Hypothesis: Increased preoperative knee laxity is associated...
Article
Background: The Knee injury and Osteoarthritis Outcome Score (KOOS) has demonstrated inferior psychometric properties when compared with the International Knee Documentation Committee (IKDC) subjective knee form when assessing outcomes after anterior cruciate ligament (ACL) reconstruction. The KOOS, Joint Replacement (KOOS, JR) is a validated shor...
Article
Background: The occurrence of physiologic knee hyperextension (HE) in the revision anterior cruciate ligament reconstruction (ACLR) population and its effect on outcomes have yet to be reported. Hypothesis/Purpose: The prevalence of knee HE in revision ACLR and its effect on 2-year outcome were studied with the hypothesis that preoperative physiol...
Article
Focal cartilage defects in the knee are commonly found on MRI and arthroscopically. When these lesions are symptomatic and fail nonoperative management several surgical strategies are available. Common surgical techniques include reparative (ie, microfracture) and restorative procedures (ie, autologous chondrocyte implantation, particulated juvenil...
Article
Background: The long-term prognosis and risk factors for quality of life and disability after anterior cruciate ligament (ACL) reconstruction remain unknown. Hypothesis/Purpose: Our objective was to identify patient-reported outcomes and patient-specific risk factors from a large prospective cohort at a minimum 10-year follow-up after ACL reconstr...
Article
Background: Articular cartilage health is an important issue following anterior cruciate ligament (ACL) injury and primary ACL reconstruction. Factors present at the time of primary ACL reconstruction may influence the subsequent progression of articular cartilage damage. Hypothesis: Larger meniscus resection at primary ACL reconstruction, incre...
Article
Background: Orthopedic surgeons are among the highest prescribers of narcotic pills, and no guidelines currently exist for appropriate management of postoperative pain within this field. The purpose of this study was to gain understanding of the current pain management strategies used perioperatively and postoperatively among orthopedic shoulder s...
Article
Clinical introduction: A 74-year-old woman was brought to the ski clinic shortly after a fall on her left shoulder while skiing. She did not remember the exact fall mechanism. She felt a popping sensation in her left shoulder and was unable to move her left arm due to severe pain. Her medical and social histories were unremarkable. On physical exa...
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Background: Historically, bicycle accidents were described as the most common mechanism for pediatric anterior tibial spine fractures (ATSFs). There is a paucity of current literature examining the demographic factors associated with these injuries. The purpose of this cohort study was to characterize the epidemiology of ATSFs presenting to a sing...
Article
Purpose: To analyze failure rate in 2-year increments to determine if graft choice changed over time and graft failure rate. Methods: A prospective 2002-2008 database was used to identify risk factors for anterior cruciate ligament (ACL) retear. Subjects who had primary ACL retear with no history of contralateral surgery and 2-year follow-up wer...
Article
The purpose of this study is to determine whether any regional or age-related patterns exist in graft choice for patients undergoing primary anterior cruciate ligament reconstruction (ACLR) within a large multicenter consortium. A retrospective cohort study was performed using data collected from the Multicenter Orthopaedic Outcomes Network (MOON)...
Article
Context: With increasing life expectancy, there is growing demand for preservation of native articular cartilage to delay joint arthroplasties, especially in younger, active patients. Damage to the hyaline cartilage of a joint has a limited intrinsic capacity to heal. This can lead to accelerated degeneration of the joint and early-onset osteoarth...
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Full-text available
Background: Revision anterior cruciate ligament (ACL) reconstruction has been documented to have worse outcomes compared with primary ACL reconstruction. Hypothesis: Certain factors under the control of the surgeon at the time of revision surgery can both negatively and positively affect outcomes. Study design: Case-control study; Level of evi...
Article
Background: While revision anterior cruciate ligament reconstruction (ACLR) can be performed to restore knee stability and improve patient activity levels, outcomes after this surgery are reported to be inferior to those after primary ACLR. Further reoperations after revision ACLR can have an even more profound effect on patient satisfaction and o...
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Full-text available
Background: Anterior tibial spine fractures (ATSF) in the skeletally immature parallel anterior cruciate ligament (ACL) tears in adult patients, yet these injuries are generally regarded as mutually exclusive. Biomechanical analysis suggests that intrinsic ACL damage occurs during ATSF, and long-term clinical studies demonstrate residual anteropos...
Article
Background: The purpose of this study is to help define the indications for rotator cuff repair by identifying predictors of failure of nonoperative treatment. Methods: A prospective, multicenter, cohort study design was used. All patients with full-thickness rotator cuff tears on magnetic resonance imaging were offered participation. Baseline d...
Article
Background: Revision anterior cruciate ligament (ACL) reconstruction has been documented to have worse outcomes compared with primary ACL reconstructions. Purpose/hypothesis: The purpose of this study was to determine if the prevalence, location, and/or degree of meniscal and chondral damage noted at the time of revision ACL reconstruction predi...
Article
Background: Avulsion fractures of the anterior tibial spine in young athletes are injuries similar to anterior cruciate ligament (ACL) injuries in adults. Sparse data exist on the association between anterior tibial spine fractures (ATSFs) and later ligamentous laxity or injuries leading to ACL reconstruction. Purpose: To better delineate the in...
Article
Long head biceps tendon is a common cause of anterior shoulder pain. Failure of conservative treatment may warrant surgical intervention. Surgical treatment involves long head biceps tenotomy or tenodesis. Several different techniques have been described for biceps tenodesis, including arthroscopic versus open and suprapectoral versus subpectoral....
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Full-text available
Higher rates of poor outcomes in displaced midshaft clavicle fractures treated nonoperatively have recently been reported. Along with expanding indications for operative fixation and increasing application of locked plate constructs, it is unknown whether complications related to bicortical penetration of the clavicle can be avoided using unicortic...
Article
Context: Anterior cruciate ligament (ACL) reconstruction rehabilitation has evolved over the past 20 years. This evolution has been driven by a variety of level 1 and level 2 studies. Evidence acquisition: The MOON Group is a collection of orthopaedic surgeons who have developed a prospective longitudinal cohort of the ACL reconstruction patient...