Abstract: Open-wedge high tibial osteotomy is considered to be an effective surgical intervention for medial compartmental knee osteoarthritis. However, patella infra, which has been reported to be a result of tuberosity distalization after open-wedge high tibial osteotomy, changes the native patellofemoral biomechanics. This could raise abnormal patellofemoral contact stresses, which might be the trigger of patellofemoral arthrosis. To minimize the reduction in patellar height, we have developed a technique called open-wedge distal tuberosity tibial osteotomy. The benefits of this technique include increased bone-to-bone contact of the distal tuberosity cut surface after correction by cutting an arc osteotomy around the hinge position, which is the center of rotation. This technique also provides cortical support at the anterior osteotomy site without additional bone defect and, therefore, may be advantageous against weight-bearing stress on the osteotomy site. In all, open-wedge distal tuberosity tibial osteotomy could potentially be a unique open-wedge osteotomy that eliminates the risk for postoperative patellofemoral osteoarthritis and also could theoretically encourage rapid healing of the osteotomy, which could lead to early return to full physical activity.

Abstract: The posterior cruciate ligament (PCL) acts as the primary restraint to posterior tibial translation of the knee. Injuries to the PCL are rare in isolation and more often are associated with multiligament injuries to the knee. Several PCL reconstruction and PCL repair techniques have been described in the literature, but no single technique has been shown to be the most superior. Internal bracing with suture tape augmentation encourages natural healing and allows early mobilization. This article describes, with video illustration, PCL repair with suture tape augmentation.

Abstract: Medial patellofemoral ligament reconstruction risks patellar fracture with the osseous violation necessary for patellar attachment. Anatomic studies identify an entire medial patellofemoral complex of structures responsible for medial restraint to patellar lateral instability. One specific component of this complex is the medial quadriceps tendon femoral ligament (MQTFL). This note presents the technique, pearls and pitfalls, and critical surgical anatomy necessary for successful MQTFL reconstruction-a treatment strategy for patellar instability with no increased risk for patellar fracture. An autograft hamstring tendon or allograft tendon is fixed to the anatomically identified femoral origin and passed deep to the vastus medialis obliquus to then weave around the distal medial quadriceps tendon. This simulates the native anatomic interdigitation of the MQTFL with the quadriceps tendon and provides a stable restraint to prevent lateral patellar subluxation or dislocation.

Abstract: Ramp lesions are increasingly recognized as a hallmark of posteromedial knee instability. Although the precise mechanisms through which these lesions occur is not completely understood, the distal semimembranosus complex has been implicated in their pathogenesis due to its attachment to the posterior horn of the medial meniscus (PHMM). Arthroscopic dissection of the distal semimembranosus tendon, and the application of traction to it, results in posterior translation of the PHMM and stretching of the meniscocapsular region. This demonstrates a mechanism through which ramp lesions can occur. Furthermore, the subsequent open dissection highlights the complex anatomical relationships of the distal semimembranosus tendon complex, particularly its tensioning effect on the posterior oblique ligament. The clinical relevance of this is that when a ramp lesion occurs, it is likely to be part of a spectrum of posteromedial injury and it should be considered a hallmark of posteromedial instability rather than an isolated meniscocapsular injury.

Abstract: Injuries of the posterolateral corner (PLC) of the knee lead to chronic lateral and external rotational instability. Successful treatment of PLC injuries requires an understanding of the complex anatomy and biomechanics of the PLC. Several open PLC reconstruction techniques have been published. It is understood that anatomic reconstruction is superior to extra-anatomic techniques, leading to better clinical results. An open, anatomic, fibula-based technique for reconstruction to address lateral and rotational instability has been described. However, when an open technique is used, surgeon and patient are faced with disadvantages, such as soft tissue damage or exposure of vulnerable structures. Few arthroscopic techniques for tibia- or fibula-based reconstruction of rotational posterolateral instability have been described. A complete arthroscopic stabilization of the combined lateral and posterolateral rotational instability of the knee has not yet been described. We therefore present the first all-arthroscopic technique for complete PLC reconstruction, based on an open technique described previously. All relevant landmarks of the PLC can be arthroscopically visualized in detail, allowing safe and effective treatment of PLC injuries.

Abstract: Surgical management for glenohumeral instability has advanced to provide stronger fixation and to be less invasive. Arthroscopic suture anchor repair has been the gold standard for isolated capsulolabral tears over the years. Despite the ability of the solid suture anchors to handle physiologic load, they can present challenges such as chondral damage due to anchor size and imperfect angulation, osteolysis, anchor breakage, revision drilling, difficulty of revision surgery with accompanied bone loss, and compromised postoperative magnetic resonance imaging quality. Recently, knotless all-suture anchors have been introduced as a technique to overcome these challenges. These anchors lack a rigid component and can be placed in a tunnel of smaller diameter, thereby allowing for maintenance of glenoid bone stock. The purpose of this Technical Note is to describe our preferred surgical technique with a minimally invasive approach for the fixation of capsulolabral tears using a knotless all-suture anchor construct.

Abstract: Many options have been developed to treat irreparable massive cuff tears. Superior capsular reconstruction has been reported as one of the treatment options for relatively young patients with irreparable massive cuff tear. However, this original technique has a disadvantage of requiring a tensor facia lata autograft. It requires another incision at the lateral thigh and can be a cause of thigh pain. This article describes our modified technique for arthroscopic superior capsule reconstruction using the biceps autograft to preserve the long head of the biceps tendon anchors to the glenoid labrum (the snake technique).

Abstract: Before comprehensive correction of femoroacetabular impingement syndrome, capsular management must be thoughtfully considered to ensure both adequate visualization for bony resection and prevention of iatrogenic microinstability. A number of biomechanical and clinical studies have shown the importance of performing comprehensive capsular closure to restore native hip biomechanical kinematics. The purpose of this Technical Note is to describe the technique of using a suture passing device for capsular plication by a fellowship-trained hip arthroscopist at a large-volume academic center.

Abstract: Large glenoid bone loss defects are associated with higher failure rates after arthroscopic Bankart repair in cases of glenohumeral anterior instability, further necessitating bone graft reconstruction. Because most techniques use strong initial fixation using metal devices, bone graft resorption considered to be closely related to the presence of metal components is a potential shortcoming of these techniques. We describe an arthroscopic technique for anatomical reconstruction of the glenoid that uses a tricortical iliac crest with a metal-free fixation method using 2 ultra-high-strength sutures (FiberTape Cerclage System; Arthrex, Naples, FL), which provide substantial stability to the graft, and finishing with a capsulolabral reconstruction.

Abstract: Matrix-induced autologous chondrocyte implantation is a 2-stage surgical procedure used to treat symptomatic, full-thickness chondral lesions of the knee. This third-generation autologous chondrocyte implantation (ACI) technique improves on the limitations of previous methods, including the risk of uneven chondrocyte distribution at the time of implantation and graft hypertrophy. Given the compliant properties of the scaffold, the graft can be easily shaped to treat irregular chondral defects and applied to articular surfaces with multiplanar geometry (e.g., patella, trochlea). Although ACI techniques are ideally suited to treat chondral surface defects, the ACI "sandwich" technique can be used to treat large osteochondral defects with significant bone loss (>8 mm). Historically, this procedure uses autologous bone graft to replace areas of osseous deficiency along with 2 type I/III collagen bilayer membranes to securely contain the cultured chondrocytes within the defect. We present an analogous technique for the treatment of osteochondral lesions of the femoral trochlea using a single matrix-induced ACI scaffold and autologous bone grafting for a segmental osseous defect.

Abstract: The medial meniscus is one of the most commonly injured structures in the knee. When the importance of its proper function is well understood, an adequate management in meniscus tear is a key issue for whole knee joint well-being. Although it has been proven that meniscal repairs have better long-term results than meniscectomy, there is still no consensus as to which suturing technique is the best. An all-inside technique seems to allow for the most anatomic repairs with the greatest preservation of surrounding soft tissues. Our aim is to show that there are no technical limits for all-inside meniscal repairs with nonabsorbable sutures. We describe the technique and some tricks for medial meniscus repair in this Technical Note.

Abstract: The technique of superior capsular reconstruction (SCR) using fascia lata autograft, described by Mihata et al. in 2012, has been an acceptable and effective method for treating irreparable massive rotator cuff tears, especially in cases with severe fatty infiltration and tendon retraction. After the SCR procedure of Mihata et al., it was found that some graft failure occurred with thinning and elongation during the follow-up time, which was called graft “creep.” To avoid graft creep and reduce graft failure rates after SCR, we created an arthroscopic SCR technique with a “sandwich” patch augmented with polyethylene terephthalate scaffold interspaced between 2 folded layers of fascia lata autograft.

Abstract: Post-traumatic knee stiffness can present after injuries around the knee and surgery. Management is guided by the type of initial injury, amount of range-of-motion loss, time since injury, and cartilage status. Cases refractory to conservative management may conventionally be treated with manipulation under anesthesia (MUA), arthroscopic lysis of adhesions, or open quadricepsplasty. We describe our arthroscopic technique of lysis of adhesions with anterior interval release and intraoperative MUA, which has been shown to provide sustainable range-of-motion improvement in a subset of patients with severe knee arthrofibrosis. Although technically demanding, this technique benefits from being minimally invasive, allows for direct visualization of intra-articular structures, and allows all-round arthroscopic release of adhesions to improve patellar mobility and decrease the risk of fracture prior to MUA. A rigorous postoperative formal physical therapy protocol and patient compliance are imperative to achieve good outcomes.

Abstract: Posterolateral impression fractures of the tibial plateau are common, and open reduction and fixation can be demanding, including exposure of the peroneal nerve. Based on a patient example, the surgical technique of an arthroscopic controlled closed reduction and percutaneous screw fixation of a posterolateral tibia plateau impressed fracture is described. A patient sustained a posterolateral impression currently described as an "apple bite" fracture of the tibial plateau. The surgical technique includes standard arthroscopic portals and posteromedial and (transseptal) posterolateral portals. The posterolateral tibial plateau is visualized by incision of popliteomeniscal fibers, retraction of the popliteus tendon, and exposure of the posterolateral plateau. The impression area is marked with a K-wire using an anterior cruciate ligament target device. A cannulated ram is placed over the K-wire. The fracture is lifted under arthroscopic guidance and can be supported with allograft bone chips. To stabilize the reduction, 3 K-wires are positioned from anterior to posterior, and 3 cannulated screws are inserted directly under the joint surface to support the fractured area. In comparison with open surgical techniques, this procedure is exclusively performed under arthroscopic control and enables an anatomic reduction and fixation of the posterolateral tibial plateau.

Abstract: Greater trochanteric pain syndrome (GTPS) has received increasing attention in recent years. Most patients with GTPS present with trochanteric bursitis and respond to nonoperative treatment. However, a subset of patients may have persistent lateral hip pain or recalcitrant GTPS resulting from an undiagnosed gluteal tendon tear. Recalcitrant GTPS may be a debilitating condition in this patient subset. There is a need for an accurate and evidence-based physical examination maneuver to aid in earlier diagnosis of gluteal tendon tears and timely intervention in these patients. Most studies evaluating gluteal tendinopathy fail to assess surgical indications and instead focus on identifying trochanteric bursitis, which may or may not require surgical treatment. The modified resisted internal rotation test has been used in our practice to detect gluteus medius tendon tears in the recalcitrant GTPS patient population. Fundamental anatomic, biomechanical, electromyographic, and clinical data have been reviewed to make this an evidence-based clinical test for early detection of this pathology.

Abstract: Chronic traumatic anteroinferior instability is a common pathology of the shoulder joint. In case of glenoid bone defects, the Latarjet or bone block technique is the method of choice. The arthroscopic Bankart procedure and its modifications remain the preferred methods of treating patients without substantial bone damage of the glenoid and humeral head; however, there is a high recurrence of instability after the Bankart procedure, even for optimal indications. One of the main causes of recurrence is poor quality and weakness of the glenohumeral ligaments and labrum. We describe an alternative technique that provides triple mechanisms of stabilization like the Latarjet procedure. In our procedure, the long head of the biceps tendon is used for a sling effect, dynamic stabilization is achieved by trans-subscapular tenodesis with simultaneous plasty of the anterior segment of the labrum, and subsequent resuspension of the glenohumeral ligaments is performed using the same anchors. In patients without substantial bone loss, this procedure has numerous advantages over the arthroscopic Latarjet procedure. By creating triple mechanisms of stability like the Latarjet procedure (the bumper effect, reinforcement of ligaments, and sling effect), our procedure can significantly reinforce the Bankart procedure in cases of poor-quality glenohumeral ligaments.

Abstract: Recurrent multidirectional shoulder instability (MDI) is a challenging clinical problem, particularly in the setting of connective tissue diseases, and there is a distinct lack of literature discussing strategies for operative management of this unique patient group. These patients frequently present with significant glenoid bone loss, patulous and abnormal capsulolabral structures, and a history of multiple failed arthroscopic or open instability procedures. Although the precise treatment algorithm requires tailoring to the individual patient, we have shown successful outcomes in correcting recurrent MDI in the setting of underlying connective tissue disorders by means of a modified T-plasty capsular shift and rotator interval closure in conjunction with distal tibial allograft bony augmentation. The purpose of this Technical Note was to describe a technique that combines a fresh distal tibial allograft for glenoid bony augmentation with a modified T-plasty capsular shift and rotator interval closure for the management of recurrent shoulder MDI in patients presenting with Ehlers-Danlos syndrome or other connective tissue disorders after failed Latarjet stabilization.

Abstract: Trochlear dysplasia is the most commonly encountered pathoanatomy in patients who present with patellar instability. Outcomes of trochleoplasty procedures have shown low rates of recurrent instability and high patient-reported outcome scores. This article describes a "thin-flap" groove-deepening trochleoplasty combined with medial patellofemoral ligament reconstruction with a gracilis allograft and lateral retinacular lengthening to treat recurrent patellar instability due to high-grade trochlear dysplasia. This technique can obviate tibial tubercle osteotomy by normalizing the position of the trochlear groove and, subsequently, decreasing the tibial tubercle-to-trochlear groove distance.

Abstract: Abductor tendon tears are one of the common causes of recalcitrant laterally based hip pain and dysfunction. In most cases, abductor tendon tears are associated with chronic nontraumatic tearing of the gluteus medius tendon. Restoring abductor function of the hip by primary repair of the gluteus medius tendon has been reported to have good and excellent outcomes. However, primary repair might not be as effective for chronic detachment of the gluteus medius tendon with a wide separation from the femoral footprint or severe tendon loss. The lack of tendinous foot for repair and the intrinsically degenerative condition of the tendon may create high tension at the repair site thereby predisposing to surgical failure. We believe that the use of soft-tissue allograft from the Achilles tendon or human dermal allograft may help strengthen the surgical site. We describe a superior gluteal reconstruction technique that is suitable for cases with abductor tendon tear with severe tendon loss.

Abstract: The extensor mechanism provides active knee joint extension and stability of the patellofemoral joint. Rupture of the quadriceps tendon, although uncommon, is therefore associated with impairment in knee joint stability and, thus, requires surgical repair. Although various techniques provide excellent clinical outcomes for acute rupture, treatment of chronic rupture remains clinically challenging. We describe our modified technique for quadriceps tendon repair using a semitendinosus tendon autograft, with suturing of the quadriceps tendon stump to the patella via transosseous sutures, wherein the use of allograft and anchors is avoided. Our modified Pulvertaft weave technique is simple and reproducible.

Abstract: The high recurrence rates seen in open and arthroscopic Bankart repair in the presence of significant glenoid bone loss, Hill-Sachs lesions, or combined bony deficiencies have led many surgeons to choose bony reconstructions to manage these injuries. Although the Latarjet procedure has proved to be reliable to manage recurrent anterior shoulder instability, there have been concerns of a higher surgical complication rate associated with this procedure. Moreover, some of the complications reported with this procedure such as symptomatic implants, fracture or nonunion of the coracoid graft, and recurrence of instability could need a revision surgery to be solved. The autologous tricortical iliac bone graft is an excellent option for failed bony reconstructions. However, as with any successful surgery, each step requires planning and precise application to limit risks and avoid pitfalls. This Technical Note provides a detailed description of the autologous tricortical iliac bone graft for failed Latarjet procedures.

Abstract: Different techniques have been described to close or plicate the capsule. To perform these procedures, however, the capsule must be preserved, a consideration unfortunately often overlooked. This Technical Note describes in a stepwise manner the initial capsular management necessary to preserve the capsule for further procedures such as closure or plication. Level of Evidence: I (hip), II (impingement, labrum, other).

Abstract: Greater trochanteric pain syndrome can be caused by gluteus medius and minimus tendinopathy/tears and chronic trochanteric bursitis. Specifically, moderate-to-severe abductor tendon tears can cause severe lateral hip pain, limp, and abnormal gait. A variety of open and endoscopic techniques to treat glut abductors hip tears have been described. The use of scaffolds, such as acellular human dermal allograft, to augment tendon repair, already has been successfully reported in rotator cuff repairs of the shoulder. Still, the use of acellular human dermal allograft in the hip has been limited. However, there are some clinical scenarios in which augmentation of abductors hip tendon repair with scaffold is indicated. Chronic or massive gluteus tears or revision cases may benefit from augmentation with a scaffold. The purpose of this technical note and accompanying video is to describe our indications, pearls, and pitfalls of repair of moderate to severe gluteus tears via a minimally invasive technique augmented with acellular human dermal allograft.

Abstract: Massive irreparable rotator cuff tears in the younger, active patient can be one of the most challenging pathologies to treat in shoulder surgery. Over the last few years, the superior capsular reconstruction (SCR) technique, which has shown favorable initial clinical results, has emerged as a promising new technique that aims to restore glenohumeral mechanics and improve patient function. SCR can be technically challenging, and improvements have been made consistently to the technique. In this Technical Note, we present our knotless technique of glenoid fixation using push-in anchors and suture tapes. We believe that our procedure offers an improvement to current SCR techniques.

Abstract: As the anatomy and biomechanics of the posterolateral corner (PLC) of the knee have become better understood, the importance of the PLC's proper function has become a more frequently raised subject. Misdiagnosed chronic posterolateral instability may lead to serious consequences, including cruciate ligament reconstruction graft failure. It has been proved that high-grade PLC injuries need to be treated operatively. Surgical approaches vary, and techniques are still developing. Considering avoidance of an extended surgical approach and minimizing the risk of common peroneal nerve or popliteal artery injuries, we developed the minimally invasive, arthroscopic-assisted, anatomic PLC reconstruction.

Abstract: Surgical treatment of patients with massive rotator cuff tears is unpredictable because of a low healing rate and high incidence of clinical failure. Arthroscopic superior capsular reconstruction has emerged as a promising technique in treating younger, active patients with massive irreparable rotator cuff tears. Superior capsular insufficiency has been theorized to be a factor in the higher failure rate for repairs of massive tears, and there have been proposals of superior capsular repair in addition to rotator cuff repair to facilitate better healing of massive rotator cuff tears. This article presents our technique of functional rotator cuff augmentation, which is concomitant superior capsular reconstruction with arthroscopic rotator cuff repair, to treat massive, atrophic rotator cuff tears. This technique is used in patients with massive rotator cuff tears and superior capsular insufficiency.

Abstract: Several extra-articular surgical techniques in addition to anterior cruciate ligament reconstruction have been proposed to better restore rotational instability of the knee. One option is surgical repair of the anterolateral ligament in acute cases to achieve an anatomic reconstruction. An additional augmentation to the repair could allow a load-sharing-and thus protective-effect for the repair during the healing process. The purpose of this Technical Note is to describe a primary repair of the anterolateral ligament with suture tape augmentation (Internal Brace; Arthrex, Naples, FL) in a patient with an acute anterior cruciate ligament tear.

Abstract: The anterior cruciate ligament (ACL) is the most common ligamentous knee injury and often is encountered in those participating in multidirectional sports. ACL reconstruction is the most commonly performed knee ligament reconstruction and employs a variety of surgical techniques but still is challenged by residual laxity and graft rupture. To help address and prevent future ACL failures, new repair and reconstruction techniques have been employed that incorporate suture augmentation (InternalBrace; Arthrex, Naples, FL), which protects the graft during healing and ligamentization. Our goal of this article is to provide a surgical technique of suture augmentation with ACL reconstruction.

Abstract: Medial meniscal root tears are often disabling injuries that can occur in isolation during low-velocity, deep knee flexion maneuvers in middle-aged patients. The most common meniscal root tear pattern is a radial tear near the root attachment (type II). Root tears are often associated with meniscal extrusion, identified on magnetic resonance imaging. Relocation of the meniscal root to its anatomic center is a reported current difficulty faced by surgeons during surgical repair. However, this can be achieved via sufficient peripheral release of the posteromedial capsular attachment of the medial meniscus. The purpose of this Technical Note is to describe the authors' current surgical technique for medial meniscus root repair with a peripheral release for addressing meniscal extrusion. Classifications: level I (knee); level II (meniscus).