Publications by authors named "Nathaniel P Mercer"

Background: Outcome thresholds such as the minimal clinically important difference (MCID), patient acceptable symptomatic state (PASS), and substantial clinical benefit (SCB) are commonly used to define meaningful clinical improvement. However, these measures apply uniform cutoffs that do not account for individual baseline scores. Maximal Possible Improvement (MPI) offers a patient-specific approach by considering the maximal potential gain in function or reduction in pain.

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Background: Ankle fractures are common injuries in high-impact sports but have not been extensively studied in professional hockey. Given the high-speed, collision-heavy nature of the National Hockey League (NHL), ankle fractures may significantly affect player performance and team resources.

Purpose: To investigate the incidence, management, and impact of ankle fractures on return-to-play (RTP) and performance metrics among NHL players.

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The purpose of this study was to evaluate Achilles tendon ruptures (ATR) in NHL players and the effects on return to play and player performance metrics. The incidence, mechanism of injury, management strategy, return to play (RTP), and post-injury were assessed from official online sports databases. : A retrospective review of NHL players who sustained a partial or complete tear of the Achilles tendon from 2008 to 2024 was performed.

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Purpose: ACL tears are among the most common injuries in active individuals, with Bone-Patellar Tendon-Bone (BTB) autograft being the gold-standard treatment for reconstruction. Despite excellent outcomes, complications such as patella fractures, reported as high as 1.8%, remain a concern.

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Rectus femoris musculotendinous junction injuries occur at the interface between the muscle fibers and the tendon of the rectus femoris muscle. These types of injuries can result from acute trauma or repetitive microtrauma, leading to muscle retraction, fibrosis, muscle fiber degeneration, and chronic inflammation. Management of these injuries typically involves conservative treatment, including rest, ice, compression, and elevation, followed by a structured rehabilitation program.

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Purpose: To investigate the 10-year outcomes of hip arthroscopy in femoroacetabular impingement syndrome (FAIS), comparing the impact of cam lesion location (superolateral, anterolateral, or anterior) on total hip arthroplasty (THA) conversion rates, revision rates, and patient-reported outcomes (PROs).

Methods: This retrospective cohort study evaluated patients who underwent primary hip arthroscopy for FAIS between 2010 and 2013. Included patients had preoperative radiographic evidence of cam lesions and a minimum of 10 years of follow-up data.

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Background: Meniscal injuries trigger a local inflammatory response mediated by intra-articular mediators. Proinflammatory cytokines and chemokines can lead to cartilage degradation and subchondral bone changes, contributing to posttraumatic osteoarthritis. The role that age plays in this inflammatory response is unclear.

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Background: Lateral epicondylitis (LE), commonly known as tennis elbow, is a condition involving inflammation of the extensor carpi radialis brevis tendon at its attachment to the lateral epicondyle of the humerus. In recent years, platelet-rich plasma (PRP) therapy, an ortho-biologic treatment, has emerged as a promising option for the treatment of LE. Despite promising results in clinical trials, variability in PRP preparation and administration is a barrier to consistent outcomes.

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Introduction: Patient-reported outcome measures (PROMs) are an important component of evaluating patient health and are increasingly utilized in orthopedics. However, their use remains inconsistent among orthopedic subspecialties, with only 21% of orthopedic trauma surgeons reporting regular use of PROMs in their practice. While tools for quantifying patient distress in response to pain have been developed, they are often difficult to apply due to extensive questioning and the need for prospective implementation.

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Background: Arthrofibrosis is a debilitating complication of total knee arthroplasty (TKA) and may benefit from arthroscopic lysis of adhesions (LOA) to improve range of motion and decrease pain. However, the rates of periprosthetic joint infection (PJI) and of the need for future revision TKA (rTKA) have only been studied in a limited capacity in the literature. In this study, we aimed to compare PJI and revision outcomes in patients who had undergone TKA between those who subsequently underwent arthroscopic LOA and those who did not undergo arthroscopic LOA.

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Background: The purpose of this systematic review was to evaluate the impact of mental health disorders (MHDs) on the clinical and functional outcomes following total ankle arthroplasty (TAA) for the treatment of end-stage ankle arthritis.

Methods: A systematic review of the EMBASE, MEDLINE, and Cochrane Library databases was conducted in April 2024 following PRISMA guidelines. Data collected included patient demographics, clinical outcomes, complications, and failures.

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Introduction: The Minimum Information for Studies Evaluating Biologics in Orthopaedics (MIBO) guidelines were developed in 2017 in order to establish a standardized approach for reporting key characteristics in platelet rich plasma (PRP)-based studies. However, the adherence to the guidelines from authors publishing data on studies related to the use of PPR in the management of osteochondral lesions of the talus (OLTs) has not yet been determined. The purpose of this study was to analyze how well clinical trials on PRP interventions for OLTs adhered to the MIBO guidelines.

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Background: The purpose of this systematic review was to evaluate outcomes following intra-articular injection of hyaluronic acid (HA) for the treatment of hallux rigidus.

Methods: During April 2024, a systematic review of the MEDLINE, EMBASE, and Cochrane Library databases was performed based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Data collected and analyzed were number of patients, patient age, follow-up, subjective clinical outcomes, complications, and failures.

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Article Synopsis
  • Cheilectomy is a common procedure for treating hallux rigidus, but there's no agreement on the outcomes after a minimally invasive form called MIDC.
  • A review of six clinical studies involving 348 patients showed significant improvement in patient-reported outcomes, with scores rising from an average of 68.9 before surgery to 87.1 after.
  • Despite the improvements, there was an 8.4% complication rate and an 8.7% failure rate, highlighting the need for more high-quality studies to better evaluate MIDC efficacy.
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Background: The design of reverse shoulder arthroplasty (RSA) implants has evolved significantly over the past 50 years. Today there are many options available that differ in design of the glenoid and humeral components, fixation methods, sizes, and modularity. With respect to the humeral component, the literature has generally focused on the differences between inlay and onlay designs and the potential impact on outcomes.

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Background: As no evidence-based treatment guidelines exist for chronic Achilles tendon rupture (CATR), a systematic review of the literature was performed to compare the different treatment options and recommend a literature-based algorithm.

Methods: In June 2022, MEDLINE, Embase, and Cochrane Library databases were systematically reviewed based on the PRISMA guidelines. The level of evidence (LOE) and quality of evidence were evaluated, and statistics on clinical outcomes and complications were calculated.

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We present a case of calcaneal reconstruction after both an improvised explosive device injury and subsequent salvage procedures left the patient with a large calcaneal defect and damaged hindfoot soft tissue. A subtalar arthrodesis was performed with a femoral head allograft, where it was fused to the remaining calcaneus and superiorly through the talus, to successfully reconstruct this defect. Demineralized bone matrix, bone morphogenetic protein, and concentrated bone marrow aspirate were also added as adjuncts to promote bone remodeling.

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BackgroundEndoscopic plantar fascia release (EPFR) is an established operative treatment for recalcitrant plantar fasciitis. The purpose of this systematic review is to provide a comprehensive review on the outcomes of EPFR in the treatment of plantar fasciitis at mid-term and long-term follow-up.MethodsA systematic review was performed using, MEDLINE, EMBASE, and Cochrane library databases in May 2020 based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.

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Background: The evidence supporting best practice guidelines in the field of cartilage repair of the ankle are based on both low quality and low levels of evidence. Therefore, an international consensus group of experts was convened to collaboratively advance toward consensus opinions based on the best available evidence on key topics within cartilage repair of the ankle. The purpose of this article is to report the consensus statements on "Pediatric Ankle Cartilage Lesions" developed at the 2019 International Consensus Meeting on Cartilage Repair of the Ankle.

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Background: There is minimal literature on the use of suture tape augmentation in the treatment of chronic lateral ankle instability (CLAI), prompting an investigation on its use and effect during surgery of the lateral ankle.

Purpose: To evaluate the evidence for the use of suture tape augmentation in the treatment of CLAI and the outcomes after this procedure.

Study Design: Systematic review; Level of evidence, 4.

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Article Synopsis
  • An international group of 43 experts collaborated to create consensus opinions on cartilage repair terminology for ankle injuries, addressing the existing gap in best practice guidelines.
  • They used the Delphi method to draft, review, and vote on key statements related to osteochondral lesions, resulting in 11 agreed-upon definitions and classifications.
  • The established terminology, including terms like "osteochondral lesion of the talus" (OLT), aims to help clinicians better communicate and treat these injuries effectively.
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Purpose: To investigate the short-term clinical outcomes and satisfaction for the first set of patients at our institution receiving in-office needle arthroscopy (IONA) for the treatment of posterior ankle impingement syndrome (PAIS).

Methods: A retrospective cohort study was conducted to evaluate patients who underwent IONA for PAIS between January 2019 and January 2021. Clinical outcomes were evaluated using the Foot and Ankle Outcome Score (FAOS) and Patient-Reported Outcomes Measurement Information System Pain Interference, and Pain Intensity scores.

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The anterior talofibular ligament (ATFL) is the most frequently injured lateral ligament of the ankle, and up to 20% of patients with ankle sprains may require surgical intervention to correct chronic lateral ankle instability. There has been increased interest in arthroscopic lateral ankle ligament repair techniques to minimize postoperative pain and expedite recovery. Additionally, the use of suture-tape augmentation may allow for improved recovery in those with ATFL reconstruction.

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Hallux rigidus is a progressive degenerative process of the first metatarsophalangeal joint characterized by altered joint mechanics and formation of dorsal osteophytes. Cheilectomy is the preferred operative intervention at early stages. Technologic advances, patient preference, and cost considerations combine to stimulate the development of minimally invasive and in-office interventions.

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