Digital artery flow hemodynamics: An ultrasonographic study.

Background: There is a lack of data regarding the baseline hemodynamic blood flow parameters of the wrist and digits. Therefore, we aimed to quantify the digital and radial artery blood flow parameters using ultrasound and assess the influence of patient characteristics on hemodynamics.

Methods: We analyzed ultrasonographic data from 25 patients (50 hands) between October 2019 and December 2021.

Utilization, Complications, and Costs of Inpatient versus Outpatient Total Elbow Arthroplasty.

Background: Although total hip and knee arthroplasty have largely moved to the outpatient setting, total elbow arthroplasty (TEA) remains a predominantly inpatient procedure. Currently, evidence on the safety and potential cost savings of outpatient TEA is limited. Therefore, we aimed to compare the costs and complications associated with performing TEA in the inpatient versus outpatient setting.

Wound Healing Complications in Diabetic Patients Undergoing Carpal Tunnel and Trigger Finger Releases: A Retrospective Cohort Study.

Purpose: To evaluate the association of diabetes and perioperative hemoglobin A1C (HgA1C) value with postoperative wound healing complications following carpal tunnel release (CTR) and trigger finger release (TFR).

Methods: A retrospective review of diabetic patients who underwent CTR and/or TFR between 2014 and 2018 was performed. Hemoglobin A1C value within 90 days of surgery was recorded for all diabetic patients.

Angiogenic and Arthritogenic Properties of the Soluble Form of CD13.

Aminopeptidase N/CD13 is expressed by fibroblast-like synoviocytes (FLS) and monocytes (MNs) in inflamed human synovial tissue (ST). This study examined the role of soluble CD13 (sCD13) in angiogenesis, MN migration, phosphorylation of signaling molecules, and induction of arthritis. The contribution of sCD13 was examined in angiogenesis and MN migration using sCD13 and CD13-depleted rheumatoid arthritis (RA) synovial fluids (SFs).

Citrullinated Inhibitor of DNA Binding 1 Is a Novel Autoantigen in Rheumatoid Arthritis.

Objective: To explore the intrinsic role of inhibitor of DNA binding 1 (ID-1) in rheumatoid arthritis (RA) fibroblast-like synoviocytes (FLS) and to investigate whether ID-1 is citrullinated and autoantigenic in RA.

Methods: RA patient serum ID-1 levels were measured before and after infliximab treatment. RA FLS were transfected with a clustered regularly interspaced short palindromic repeat (CRISPR)/CRISPR-associated protein 9 construct targeting ID-1 to examine the effects of ID-1 deletion.

The Effect of Axial Loading on Ulnar Variance.

 Forearm rotation results in change in ulnar variance. Axial loading of the wrist is required to maintain daily activities. Change in ulnar variance during axial loading has not been investigated previously.

Physiological Loading of the Coonrad/Morrey, Nexel, and Discovery Elbow Systems: Evaluation by Finite Element Analysis.

Purpose: Wear of polyethylene bearings represents a limiting factor in the long-term success of total elbow prostheses. Bearing stress is 1 factor contributing to accelerated wear. Physiological loading of total elbow prostheses and implant design influence upon bearing stresses have not been well described.

Proximal Pole Scaphoid Nonunion Reconstruction With 1,2 Intercompartmental Supraretinacular Artery Vascularized Graft and Compression Screw Fixation.

Purpose: To review the incidence of union of patients with proximal pole scaphoid fracture nonunions treated using a 1,2 intercompartmental supraretinacular artery (1,2 ICSRA) vascularized graft and a small compression screw.

Methods: This is a retrospective case series of 12 patients. Calculations of the size of the proximal pole fragment relative to the total scaphoid were performed using posteroanterior view scaphoid radiographs with the wrist in ulnar deviation and flat on the cassette.

Biomechanics of the Proximal Radius Following Drilling of the Bicipital Tuberosity to Mimic Cortical Button Distal Biceps Repair Technique.

Background: A fracture through the proximal radius is a theoretical concern after cortical button distal biceps fixation in an active patient. The permanent, nonossified cortical defect and medullary tunnel is at risk during a fall eliciting rotational and compressive forces. We hypothesized that during simulated torsion and compression, in comparison with unaltered specimens, the cortical button distal biceps repair model would have decreased torsional and compressive strength and would fracture in the vicinity of the bicipital tuberosity bone tunnel.

Return to Play After Osteochondral Autograft Transplantation of the Capitellum: A Systematic Review.

Purpose: To determine the rate of return to play and to identify lesion or osteochondral graft characteristics that may influence the return to competitive athletics after osteochondral autograft transplantation (OAT) for symptomatic osteochondritis dissecans (OCD) lesions.

Methods: A systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. A duplicate search of PubMed, Embase, Scopus, Web of Science, and CENTRAL databases was performed, beginning from the database inception dates through July 2016, for all articles evaluating the return to play after OAT for OCD lesions of the capitellum.

Comparison of 2-Dimensional and 3-Dimensional Metacarpal Fracture Plating Constructs Under Cyclic Loading.

Purpose: Metacarpal fractures are commonly treated by a variety of means including casting or open reduction internal fixation when unacceptable alignment is present following attempted closed reduction. Dorsal plating with either single-row 2-dimensional or double-row 3-dimensional plates has been proposed. This study's purpose was to determine if there are any differences in fixation construct stability under cyclic loading and subsequent load to failure between the lower profile 3-dimensional and the larger 2-dimensional plates in a metacarpal fracture gap sawbone model.

Biceps and Triceps Ruptures in Athletes.

Although rare, biceps and triceps tendon ruptures constitute significant injuries that can lead to profound disability if left untreated, especially in the athletic population. Biceps rupture is more common than triceps rupture, with both resulting from a forceful eccentric load. Surgical repair is the treatment method of choice for tendinous ruptures in athletes.

Ulnar collateral ligament strain of the thumb metacarpophalangeal joint: biomechanical comparison of two postoperative immobilization techniques.

Background: The aim of this study was to compare postoperative immobilization techniques of the thumb metacarpophalangeal (MP) ulnar collateral ligament (UCL) in a cadaver model of a noncompliant patient.

Methods: A cadaveric model with fresh-frozen forearms was used to simulate pinch under two immobilization conditions: (1) forearm-based thumb spica splint alone and (2) forearm-based thumb spica splint with supplemental transarticular MP Kirschner wire fixation. Pinch was simulated by thumb valgus loading and flexor pollicis longus (FPL) loading.

Management of complications of forearm fractures.

Forearm fractures may be complicated by the disruption of the distal radioulnar, proximal radioulnar, or radiocapitellar joints. The key principles in treating this unique subset of fractures include early recognition and management of the injury and restoration and maintenance of the anatomic alignment. This articles addresses radial diaphyseal fractures with distal radioulnar joint disruption, proximal ulnar fractures with radiocapitellar disruption, and disruption of the forearm longitudinal axis and how to properly recognize and manage these forearm fracture-dislocations.

Arcus venosus dorsalis pedis: morphological considerations for use in superficial palmar arch reconstruction.

Purpose: To report the branching patterns, vessel diameters, and location of the valves in the arcus venosus dorsalis pedis (AVDP) as a graft option for use in superficial palmar arch reconstruction after mutilating hand injuries.

Methods: We dissected 10 cadaveric feet and measured vessel diameters, recorded number of branches, and located valves within the tibial, middle, and fibular thirds of the system. We used retrograde india ink injection to locate valves.

Predictors of functional outcomes after simple decompression for ulnar neuropathy at the elbow: a multicenter study by the SUN study group.

Objective: To identify predictors of surgical outcome for ulnar neuropathy at the elbow (UNE).

Design: Prospective cohort followed for 1 year.

Setting: Clinics.

Intra-articular fractures of the hand.

Fractures of the hand are common injuries and in particular, fractures involving the articular surfaces can present difficulties to the orthopedic surgeon in practice. Although the treatment of these fractures needs to be individualized based on fracture pattern and location, the goals for these fractures are to restore the alignment, stability, and congruity and to allow for early motion to prevent stiffness and traumatic arthritis. This article classifies the various types of intra-articular hand fractures as well as the workup and management of these injuries.

Trend of recovery after simple decompression for treatment of ulnar neuropathy at the elbow.

Background: Although numerous studies have investigated long-term outcomes after surgical treatment of ulnar neuropathy at the elbow with simple decompression, no study has evaluated the trend of postoperative recovery. The authors assessed timing of recovery after simple decompression for ulnar neuropathy at the elbow.

Methods: The five-center Surgery of the Ulnar Nerve Study Group prospectively recruited 58 consecutive subjects with ulnar neuropathy at the elbow and treated them with simple decompression.

An outcome study for ulnar neuropathy at the elbow: a multicenter study by the surgery for ulnar nerve (SUN) study group.

Background: Many instruments have been developed to measure upper extremity disability, but few have been applied to ulnar neuropathy at the elbow (UNE).

Objective: We measured patient outcomes following ulnar nerve decompression to (1) identify the most appropriate outcomes tools for UNE and (2) to describe outcomes following ulnar nerve decompression.

Methods: Thirty-nine patients from 5 centers were followed prospectively after nerve decompression.

Coronal shear fractures of the distal humerus.

Management of coronal shear fractures of the distal humerus has evolved considerably over the past 3 decades, with an increased appreciation of the complexity of these fractures, improvements in internal fixation techniques, and the use of more extensile exposures. Nearly all of these fractures are displaced, given the paucity of soft tissue attachments and correspondingly, nonsurgical management is fraught with complications including chronic pain, mechanical symptoms, and instability and is not recommended. Good to excellent outcomes can be achieved in the majority of patients with open reduction internal fixation, particularly when the fracture is limited to the radiocapitellar joint.

Biomechanical properties of fixed-angle volar distal radius plates under dynamic loading.

Purpose: To evaluate and compare the biomechanical properties of 8 different locked fixed-angle volar distal radius plates under conditions designed to reflect forces seen in early fracture healing and postoperative rehabilitation.

Methods: We evaluated the Acumed Acu-Loc (Acumed, Hillsboro, OR), Hand Innovations DVR (Hand Innovations, Miami, FL), SBi SCS volar distal radial plate (Small Bone Innovations, Morrisville, PA), Synthes volar distal radius plate and EA extra-articular volar distal radius plate (Synthes, Paoli, PA), Stryker Matrix-SmartLock (Stryker Leibinger, Kalamazoo, MI), Wright Medical Technology Locon VLS (Wright Medical Technology, Arlington, TN), and Zimmer periarticular distal radius locking plate (Zimmer, Warsaw, IN). After affixing each plate to a synthetic corticocancellous radius, we created a standardized dorsal wedge osteotomy.

Postoperative single-fraction radiation for prevention of heterotopic ossification of the elbow.

Purpose: Heterotopic ossification (HO) about the elbow has been described after surgery, trauma, and burns. Even limited deposits can lead to significant functional deficits. Little data exist regarding outcomes of patients treated with radiation therapy (RT) after elbow surgery.