Arthroscopy-The Journal of Arthroscopic and Related Surgery最新文献

Three-dimensional (3D) modeling using digital or printed models provides a unique perspective that caters to cognitive spatial ability in a way that can add to our understanding and mental representations of human anatomy. This is particularly useful in the setting of trochlear dysplasia, where the morphology of the groove can exhibit substantial variability and complexity. Using 3D reformatted images and models, a pragmatic understanding of how morphology influences patellofemoral pathology can be gleaned. Further, this perspective facilitates cognition of what patellar tracking may look like after realignment procedures. Using 3D modeling, concepts such as patella alta, trochlear depth, lateralization of the patellar entry point, trochlear curvature, and the presence of a proximal trochlear spur can help afford a better understanding of how trochlear anatomy may influence tracking while also providing insight as to the ideal tracking path. The use of 3D has recently emerged as a useful tool in multiple surgical subspecialties, particularly in situations involving surgical planning or complex anatomy. Given the complexity and variation in trochlear morphology in patients with trochlear dysplasia who develop either patellar instability or focal overloading, 3D modeling is well-suited to provide a perspective that can add to our understanding of trochlear dysplasia, and potentially even how we diagnose and treat it. LEVEL OF EVIDENCE: Level V, expert opinion.

Trends in practice patterns for anterior cruciate ligament surgery can give us a real-world look at what surgeons are actually doing. When large institutional studies show changing practice patterns over time, we can use those data to help benchmark our own practices. Innovations are inspired by colleagues, published literature, and industry, and not all innovation is positive. A return to independent drilling of the femoral and tibial tunnels reverses a single-incision trend that was less anatomic. Although hamstring tendon grafts are a popular graft choice, hamstring tendon grafts are associated with greater revision rates, and high-volume surgeons prefer bone-patellar tendon-bone and quadriceps tendon and autografts in general. Additional data are required to determine the benefit of quadriceps tendon and of lateral extra-articular tenodesis augmentation of anterior cruciate ligament reconstruction. Although a first step is to identify current practice patterns, the most important step is to develop high-quality outcome data, which can be used to inform surgeons so they can individualize and optimize surgery for their patients.

Purpose: To examine the effect of various biologic adjuvants on the polarization of macrophages in an in vitro model for rotator cuff tears.

Methods: Tissue was harvested from 6 patients undergoing arthroscopic rotator cuff repair. An in vitro model of the supraspinatus and subacromial bursa was created and treated with control, platelet-rich plasma (PRP), autologous activated serum (AAS), or a combination of PRP+AAS. The effect of treatment on macrophage polarization between M1 proinflammatory macrophages or M2 anti-inflammatory macrophages was measured using gene expression, protein expression, flow cytometry, and nitric oxide production.

Results: Tendon and bursa treated with PRP, AAS, and PRP+AAS significantly decreased the gene expression of M1 markers interleukin (IL)-12 and tumor necrosis factor-alpha while significantly increasing the expression of M2 markers arginase, IL-10, and transforming growth factor-β (P < .05) compared with treatment with control. Enzyme-linked immunosorbent assay analysis of protein production demonstrated that, compared with control, coculture treated with PRP, AAS, and PRP+AAS significantly decreased markers of M1-macrophages (IL-6, IL-12, and tumor necrosis factor-alpha) while significantly increasing the expression of markers of M2-macrophages (arginase, IL-10, and transforming growth factor-beta) (P < .05). Flow cytometry analysis of surface markers demonstrated that compared with control, tendon and bursa treated with PRP, AAS, and PRP+AAS significantly decreased markers of M1-macrophages (CD80, CD86, CD64, CD16) while significantly increasing the expression of markers of M2-macrophages (CD163 and CD206) (P < .05). Treatment of the coculture with PRP, AAS, and PRP+AAS consistently demonstrated a decrease in nitric oxide production (P < .05) compared with control. AAS and PRP+AAS demonstrated an increased macrophage shift to M2 compared with PRP alone, whereas there was not as uniform of a shift when comparing PRP+AAS with AAS alone.

Conclusions: In an in vitro model of rotator cuff tears, the treatment of supraspinatus tendon and subacromial bursa with PRP, AAS, and PRP+AAS demonstrated an increase in markers of anti-inflammatory M2-macrophages and a concomitant decrease in markers of proinflammatory M1-macrophages. AAS and PRP+AAS contributed to a large shift to macrophage polarization to the anti-inflammatory M2 compared with PRP.

Clinical relevance: The mechanism of biologic adjuvant effects on the rotator cuff remains poorly understood. This study suggests that they may contribute to polarization of macrophages for their proinflammatory (M1) state to the anti-inflammatory (M2) state.

An aspherical hip can mechanically damage the joint and lead to chondrolabral injury, functional pain, and potentially arthritis. Hip arthroscopy to address femoroacetabular impingement (FAI) and make the hip spherical, with treatment of concomitant labral pathology, can result in excellent outcomes in patients with this pathology. The goal is complete cam resection. Cam pathology comes in many shapes, locations, and sizes-from smaller, anterolaterally located lesions to larger, pistol group lesions that extend more superiorly and lateral. Surgically addressing the lateral cam lesion is more technically demanding, and such patients have greater chondolabral damage. Regardless, when the cam lesion is fully resected, we can expect to achieve good outcomes.

Purpose: To identify trends in anterior cruciate ligament reconstruction (ACLR), including graft choice, femoral tunnel drilling techniques, and augmentation techniques, and to assess how various surgeon factors impact these trends.

Methods: A retrospective review of primary ACLRs performed between 2014 and 2022 was completed using a multicenter institutional database. Patient demographic characteristics, graft type, femoral drilling technique, use of extra-articular tenodesis, and use of suture augmentation were recorded from the medical record. Surgeon fellowship training (sports trained vs non-sports trained), experience (high [minimum of 15 years in practice] vs low), and volume (high [minimum of 15 ACLRs/year] vs low) were used to stratify technique utilization. The z test for proportions was used to compare categorical variables. Pearson correlation analyses identified trends and assessed statistical significance, defined as P < .05.

Results: Our cohort consisted of 2,032 ACLRs performed in 2,006 patients. The average patient age was 28.3 ± 11.6 years, with more procedures performed in male patients (67.3%). The average length of surgeon experience was 19.7 ± 11.4 years, with an average annual procedural volume of 4.0 ± 5.4 ACLRs. Most surgeons were sports trained (n = 55, 64.7%), high experience (n = 44, 57.1%), and low volume (n = 80, 94.1%). There was an increasing annual proportion of ACLRs performed by sports-trained surgeons (R = 0.748, P = .020) and low-experience surgeons (R = 0.940, P < .001). Autograft reconstructions were most often performed by sports-trained (71.2%), low-experience (66.1%), and high-volume (76.9%) surgeons. There was an increasing proportion of autograft ACLRs that used quadriceps tendon among sports-trained (R = 0.739, P = .023), high-experience (R = 0.768, P = .016), and low-volume (R = 0.785, P = .012) surgeons. Independent drilling techniques were used in an increasing proportion of ACLRs performed by non-sports-trained (R = 0.860, P = .003) and high-volume (R = 0.864, P = .003) surgeons. Augmentation of ACLR with concomitant suture augmentation (n = 24, 1.2%) or extra-articular tenodesis (n = 6, 0.3%) was rarely performed.

Conclusions: In our multicenter institution, the quadriceps tendon autograft has been increasingly used in ACLR by sports-trained, low-volume, and high-experience surgeons. Independent drilling techniques have been increasingly used by non-sports-trained and high-volume surgeons.

Clinical relevance: Surgeons must stay current with the literature that affects their procedures to ensure that evidence-based medicine is being practiced.

Orthopaedic sports medicine surgeons represent a specialized group of physicians who play a unique role in caring for diverse population including a high-demand, athletic patient population. This results in a variety of opportunities to serve depending on one's unique interests. Opportunities include: 1) direct patient care, 2) sports team coverage, 3) research, 4) teaching/mentoring, 5) involvement with organizations, and 6) collaboration with industry. Every member of our community can contribute to our field in multiple ways, depending upon personal interests and developing skills.

Surgeons have dealt with the negative effects of misinformation from "Dr. Google" since patients started using search engines to seek out medical information. With the advent of natural language processing software such as Chat Generative Pre-Trained Transformer (ChatGPT), patients may have a seemingly real conversation with artificial intelligence software. However, ChatGPT provides misinformation in response to medical questions and responds at the reading level of a college freshman, whereas the U.S. National Institute of Health recommends medical information be written at a 6th-grade level. The flaw of ChatGPT is that it recycles information from the Internet. It is "artificially intelligent" because of its ability to mimic natural language, not because of its ability to understand and synthesize content. It fails to understand nuance or critically analyze new inputs. Ultimately, these skills require human intelligence, whereas ChatGPT provides responses that are exactly what you might expect-artificial.