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As resolution and image quality improve, several potential advantages make needle arthroscopy (NA) appealing for broader therapeutic applications in the operating room. The smaller camera size and weight allow for a minimally invasive approach with smaller incisions than standard arthroscopy and decreased arthroscopic fluid use. Differences in the technology, such as a 0-degree optic and less rigid instrumentation necessitate a novel technique to accommodate thorough diagnostic arthroscopy as well as new approaches to therapeutic procedures. This manuscript introduces our preferred approach to diagnostic arthroscopy and partial medial meniscectomy with NA and small-bore instruments. The minimally invasive nature of this technology may decrease postoperative pain and improve return of comfort and function.Ulnar collateral ligament (UCL) injury is commonly seen in overhead throwing athletes resulting from the repetitive valgus stress placed on the medial elbow. UCL injuries (attenuation, insufficiency, or rupture) can result in medial elbow pain, a loss of pitch velocity and accuracy, and increased fatigue. Diagnosis can be made by performing a thorough physical examination along with imaging if indicated, such as ultrasound or magnetic resonance imaging. Treatment options include nonoperative in recreational athletes or those whose primary positions in sport are not high-volume throwing, such as position players in baseball. If nonoperative treatment fails, or the patient has potential for future high-level overhead activity such as a baseball pitcher, surgical repair or reconstruction may be indicated. [https://www.selleckchem.com/products/bozitinib.html PLB1001] This article describes our surgical technique for UCL repair in pediatric baseball pitchers.Osteochondral lesions of the talus (OLTs) are difficult to treat. Arthroscopic microfracture augmented with micronized cartilage (BioCartilage; Arthrex, Naples, FL) and platelet-rich plasma is emerging as a treatment for moderate-sized, well-contained full-thickness OLTs. This treatment may provide superior histologic results and is less technically demanding and yields less morbidity than an open osteochondral allograft or autograft transfer. This technique guide presents the senior author's preferred strategy for treatment of a moderate-sized OLT with arthroscopic microfracture and placement of micronized cartilage and platelet-rich plasma.Recent orthopedic literature has shown that primary repair for femoral-sided avulsion tears of the anterior cruciate ligament (ACL) can be successful. Primary ACL repair avoids invasive reconstruction techniques, graft-site morbidity, and the loss of native anatomy while producing excellent results in appropriately selected patients. Here we describe our patient selection parameters, ACL repair technique, and rehabilitation protocol.Younger patients in particular may require biceps tenodesis following tenotomy to avoid the development of a biceps "Popeye deformity." It is, however, difficult to predict whether a tenodesis is cosmetically necessary, since this deformity develops to a very variable degree, as the biceps muscle will retract in the postoperative course to an unknown amount with active contraction. Through the intraoperative electrical stimulation of the musculocutaneous nerve, the maximal contraction of the muscle can intraoperatively be provoked and thus the amount of Popeye deformity becomes apparent. We conclude that this method could be useful for intraoperative decision making if biceps tenodesis is needed and helps to avoid this surgical step and its associated risks, which otherwise often is performed unnecessarily, just in case.Proximal tendinopathy of the long head of the biceps (LHB) is a common shoulder problem that requires surgical intervention, especially in patients with concomitant rotator cuff tears. The comparative results of biceps tenotomy and biceps tenodesis are still doubtful; both techniques show good to excellent results in terms of postoperative pain and functional outcomes. The described technique-all-arthroscopic LHB transfer-is an optional biceps tenodesis technique using all-arthroscopic soft-tissue tenodesis and arthroscopic suturing of the LHB to the short head of the biceps and coracoacromial ligament combined with release of the LHB from the bicipital groove.Anterior cruciate ligament reconstruction using quadriceps tendon (QT) autograft has recently gained popularity because newer techniques allow harvest of a robust graft with little soft-tissue dissection or donor-site morbidity. The QT graft can provide a safe, reproducible, and versatile option for primary and revision anterior cruciate ligament reconstruction with equivalent outcomes and failure rates to those of bone-patellar tendon-bone and hamstring tendon grafts. Therefore, continued improvement in surgical technique may help to further improve patient outcomes. This study introduces a modification of current QT techniques using a partial-thickness graft with continuous-loop EndoButton fixation (Smith &amp; Nephew, Andover, MA).As a result of the continued improvement in arthroscopic equipment and techniques, subscapularis tears are now more reliably identified and are being repaired at higher rates than previously reported. Whereas small upper-border subscapularis tears can usually be effectively managed using an intra-articular view, larger tears often cannot be fully visualized with a standard 30° arthroscope when viewed from the posterior portal. These tears may require either using a 70° arthroscope or viewing through the standard 30° arthroscope from a subacromial portal-site location to completely visualize the tear. This article illustrates and discusses the advantages of using a subacromial-space portal site to view and arthroscopically manage large subscapularis tears.Needle arthroscopic procedures of the knee offer potential advantages over standard arthroscopic procedures. The small size of the instruments allows for surgery without the use of a scalpel or suture, potentially decreased recovery times, and potentially reduced complication rates compared with traditional arthroscopy. In some patients, the procedure can be performed without the use of either general anesthesia or sedation. The purpose of this article is to provide a standardized technique guide for needle arthroscopic partial medial meniscectomy under local anesthesia.