An Anatomic Reconstruction of Both the Anterior Cruciate Ligament and Fibular Collateral Ligament Using Autografts.

Fibular collateral ligament (FCL) tears rarely occur in isolation and are typically injured in conjunction with another ligament, including the anterior cruciate ligament (ACL). Reconstruction of both ACL and the FCL is critical to restore proper knee biomechanics and stability. This technique describes an anatomic reconstruction of both the ACL using a bone-patellar tendon-bone autograft and the FCL using a semitendinosus hamstring autograft.

Patellar Tendon Open Debridement and Reconstruction With Hamstring Tendon Autograft for Severe Patellar Tendinopathy.

Patellar tendinopathy is an overuse injury of the patella tendon common in jumping sports or activities. Degeneration of the patellar tendon fibers causes microtears in the tendon, leading to partial patellar tendon tears. If nonoperative treatment fails and the tears are mild, a debridement of the detached tissue with a patella tendon repair can help to reduce pain, promote healing, and improve function.

Knudsen effusion mass spectrometry: Current and future approaches.

Rationale: Knudsen effusion mass spectrometry (KEMS) has been a powerful tool in physical chemistry since 1954. There are many excellent reviews of the basic principles of KEMS in the literature. In this review, we focus on the current status and potential growth areas for this instrumental technique.

Combined Lateral Closing and Medial Opening-Wedge Proximal Humerus Osteotomy in an Adolescent with Extreme Varus Deformity: A Case Report.

Case: This report describes the case of an athletic 12-year-old boy who presented with a 64° left proximal humeral varus angulation deformity and physeal bar secondary to multiple operations for a proximal humeral metaphyseal cystic lesion and pathologic fracture. Using a combined lateral closing and medial opening-wedge osteotomy, a 68° valgus correction was achieved with excellent clinical and functional outcomes at 16-month follow-up. Forward flexion increased from 120 to 170° preoperatively to postoperatively while abduction improved from 110° preoperatively to 170° postoperatively.

Thermochemistry of SiO(OH) Vapor Species from Quantum Chemical Calculations.

The thermochemistry of the Si-O-H system has been extensively studied both experimentally and theoretically due to its importance in chemical processes, degradation of silica-protected materials in combustion, and geological processes. In this paper, we review past studies and use quantum mechanical methods to generate a new data set. Molecular geometries were generated with DFT using the B3LYP functional.

Quantum chemical and experimental thermodynamic studies of HfO(g).

Hafnium dioxide vaporizes primarily to HfO(g) in a reducing environment. The thermochemistry of HfO(g) is calculated from quantum methods and measured via Knudsen effusion mass spectrometry. For the computations, all-electron and relativistic effective core potential calculations are used.

Intrathecal Morphine Use in Adolescent Idiopathic Scoliosis Surgery is Associated with Decreased Opioid Use and Decreased Length of Stay.

Background: Length of stay (LOS) in the hospital following posterior spinal fusion (PSF) for adolescent idiopathic scoliosis (AIS) has decreased over the past decade due to well-defined postoperative clinical pathways, earlier mobilization, and improved pain control methods. Historically, liberal use of parenteral and oral opioids for pain control caused side effects, resulting in delayed discharge. Intraoperative intrathecal morphine (ITM) has been posited to reduce the need for postoperative opioids and to expedite the discharge process.

Computational Chemistry Derivation of Cr, Mn, and La Hydroxide and Oxyhydroxide Thermodynamics.

Thermodynamic quantities are calculated for gaseous hydroxides and oxyhydroxides of Cr, Mn, and La. These would form due to water-vapor-containing environments reacting with Cr-forming alloys or oxide components of potential fuel cell interconnects or anode materials. Structures and vibrational modes for the expected hydroxides and oxyhydroxides are calculated with the B3LYP hybrid functional.

Thermochemistry of Gaseous Ytterbium and Gadolinium Hydroxides and Oxyhydroxides.

GdO and YbO are the proposed constituents of advanced coating systems in combustion environments. In such environments, they are exposed to high-temperature water vapor, which would lead to gaseous hydroxide formation. Thermodynamic parameters are reported for YbO(OH) and GdO(OH) species.

COVID Care Clinic: A Unique Way for Family Medicine to Care for the Community During the SARS-CoV-2 (COVID-19) Pandemic.

The COVID-19 pandemic has presented new challenges in how Primary Care clinicians care for community patients. Our organization quickly allocated 1 of our community clinic sites into a dedicated COVID Clinic caring for the COVID positive or any patient with COVID like symptoms to minimize contact with the well patients. A prerequisite for all patients to be seen in the COVID Care Clinic was a virtual visit staffed with Advanced Practice Providers that would further determine if the patient needed to seek emergency medical care or be seen in the COVID Clinic.

Osteomyelitis Pubis Treated with Wedge Resection: A Case Report with 26-Year Follow-up and Literature Review.

Osteomyelitis pubis is a rare orthopedic infection, accounting for less than 1-2 percent of all hematogenous osteomyelitis. Osteomyelitis pubis generally affects children, elderly patients who have undergone genitourinary procedures, and parenteral drug users. Interestingly, cases of acute osteomyelitis pubis have also been documented in previously young, healthy athletes.

Quadrilateral Space Syndrome Treated with Ultrasound-Guided Corticosteroid Injection: A Case of Isolated Teres Minor Atrophy and Review of the Literature.

Quadrilateral space syndrome (QSS) is a rare orthopedic condition caused by compression, entrapment, or injury to the axillary nerve or posterior humeral circumflex artery as they arise from the quadrilateral space. QSS can present with point tenderness over the quadrilateral space and weakness and paresthesia in the axillary nerve distribution. It is commonly associated with repetitive overhead activities and is seen in athletes engaging in such activities.

Monte Carlo simulation of a Knudsen effusion mass spectrometer sampling system.

Rationale: Knudsen effusion mass spectrometry (KEMS) shows improved performance with the "restricted collimation" method of Chatillon and colleagues, which consists of two apertures between the Knudsen cell orifice and the ionizer. These apertures define the shape and position of the molecular beam independently of the sample and effusion orifice and as a result reduce background and improve sampling from the Knudsen cell. Modeling of the molecular beam in restricted collimation allows optimization of the apertures' diameters and spacing.

Septic Arthritis of the Hip in the Setting of Hemophagocytic Lymphohistiocytosis: A Case Report.

Case: A twenty-two-month-old boy with septic hip arthritis had persistent elevated inflammatory markers and daily fevers despite multiple antibiotic regimens and repeated surgical debridements yielding negative cultures. After exhaustive work-up for other infectious, rheumatologic, and immunologic etiologies, he met diagnostic criteria for hemophagocytic lymphohistiocytosis (HLH) and developed cultures positive for fungal hip arthritis. Following treatment for HLH and fungal hip arthritis, he improved and was discharged.

Successful two-stage revision of Lactobacillus infection of a total knee arthroplasty and literature review.

Background: Lactobacillus has been identified as the causative organism in only two total joint arthroplasties: one total hip arthroplasty (THA) and one total knee arthroplasty (TKA). The THA was a litigious case that was treated successfully with a one-stage revision, and the patient with the TKA ultimately required above-knee amputation. We present the first case report of a Lactobacillus infection of a TKA that was treated successfully with a two-stage revision TKA.

Some Historical Treatments should not be Forgotten: A Review of Cast Wedging and A Trick to Normalize Non-Standardized Digital X-rays.

Introduction: Cast wedging is a simple and reproducible method of manipulating a sub-optimally reduced fracture producing a correction and a final alignment that is amenable to definitive closed treatment. Multiple successful techniques have been previously described in the literature (opening wedge, closing wedge and combination).

Technical Note: We present a simple reproducible method of templating and executing a proper cast wedging technique using digital imaging systems that are not controlled for magnification with an illustrative case.

Concussions From 9 Youth Organized Sports: Results From NEISS Hospitals Over an 11-Year Time Frame, 2002-2012.

Background: Youth sports programs are extremely popular throughout the United States, with children starting formal sports participation as young as 4 years. This places children at greater risk for concussions and other trauma.

Purpose: To describe the epidemiology of concussions sustained during participation in 9 organized sports prior to participation in high school athletics.

Management of Cannulated Screw Failure and Recurrent SCFE Displacement - Case Report.

Introduction: SCFE occurs in 10 per 100,000 in some regions of the United States with the incidence continuing to increase. Percutaneous screw fixation is a well-accepted treatment for this disorder for over 20 years but management of complications is not well elucidated in the literature.

Case Report: We describe a case where a traumatic unstable SCFE that was initially treated with closed reduction and fixation with a single transphyseal screw went on to hardware failure with recurrence of the deformity.

Concussions From Youth Football: Results From NEISS Hospitals Over an 11-Year Time Frame, 2002-2012.

Background: Youth football programs across the United States represent an at-risk population of approximately 3.5 million athletes for sports-related concussions. The frequency of concussions in this population is not known.

Implant and limb alignment outcomes for conventional and navigated unicompartmental knee arthroplasty.

Accurate implant positioning and restoration of lower limb alignment are major requirements for successful long-term results in unicompartmental knee arthroplasty (UKA). Alignment accuracy was compared between navigated-UKA (nUKA) and conventional-UKA (cUKA) groups using a retrospective matched case-control study (n=129, 58 nUKA, 71 cUKA). Mechanical axis (MA), hip-knee-ankle angle (HKA°), coronal implant alignment, and tibial implant posterior slope were measured.

Fracture through a Harris growth arrest line: a case report.

Fractures occur when bone is overloaded and mechanical failure occurs with the fracture propagating along the lines of least resistance. We report the case of a 6-year-old boy who sustained a nondisplaced distal third tibial shaft fracture through a Harris growth arrest line of increased osseous density due to low-energy blunt trauma. This case is used as an opportunity to review the literature on Harris growth arrest lines and discuss a fracture pattern that has not been previously described in the literature.

Epidemiology of cheerleading injuries presenting to NEISS hospitals from 2002 to 2007.

Background: Cheerleading has developed into a complex sport utilizing aspects of dance, gymnastics/tumbling, single- and multiple-partner stunts, and tosses in complex displays. Stunting and tosses elevates one or multiple participants into the air supported by teammates putting all at significant injury risk.

Methods: We reviewed all cheerleading injuries captured by the US Consumer Product Safety Commission National Electronic Injury Surveillance System from 2002 to 2007 that presented to US Emergency Departments and used the new narrative feature added in 2002 to better differentiate injury context and severity.

High-temperature vaporization of B2O3(l) under reducing conditions.

The vaporization of B(2)O(3) in a reducing environment leads to the formation of both B(2)O(3)(g) and B(2)O(2)(g). Whereas the formation of B(2)O(3)(g) is well understood, many questions about the formation of B(2)O(2)(g) remain. Previous studies using B(s) + B(2)O(3)(l) have led to inconsistent thermodynamic data.