Impact of pain in other body regions on the foot-specific quality of life in patients with hallux valgus.

Objectives: The purpose of this study was to clarify the prevalence of pain outside the foot, and to determine the associations of pain outside the foot with foot-specific quality of life (QOL) in patients with hallux valgus.

Methods: Patients scheduled to undergo hallux valgus surgery were recruited. Patients answered whether they experienced disabling pain in 13 body regions other than the foot.

Effect of Systemic Administration of Granulocyte Colony-Stimulating Factor on a Chronic Partial-Thickness Cartilage Defect in a Rabbit Knee Joint.

Objective: Cartilage lesions in the knee joint can lead to joint mechanics changes and cause knee pain. Bone marrow stimulation (BMS) promotes cartilage regeneration by perforating the subchondral bone just below the injury and inducing bone marrow cells. This study aimed to investigate whether systemic administration of granulocyte colony-stimulating factor (G-CSF) with BMS improves repair of chronic partial-thickness cartilage defects (PTCDs).

Knowledge of and experience with transgender players among soccer team staff: a cross-sectional questionnaire design.

Objectives: Transgender issues have become increasingly prominent in sports. However, knowledge of and experience with supporting transgender players across soccer team staff remain unclear. The objectives of this questionnaire-based study were to 1) clarify staff knowledge of transgender-related terminology; and 2) explore soccer team staff's awareness and experience with supporting transgender players.

Influence of foot position on the measurement of first metatarsal axial rotation using the first metatarsal axial radiographs.

Background: The purpose of this study was to clarify 1) the measurement error of the pronation angle using the first metatarsal axial radiograph with the pronation angle along the longitudinal axis of the first metatarsal as the reference standard, 2) the influence of variability in the foot position on the measurement error, and 3) the intra- and interrater reliability of pronation angle measurement using digitally reconstructed radiographs.

Methods: Digitally reconstructed radiographs of the first metatarsal were generated from the computed tomography images of 10 feet without hallux valgus (non-HV group) and 10 feet with hallux valgus (HV group). In total, 135 images were created at different degrees of supination, plantarflexion, and adduction from each foot to simulate the first metatarsal axial view.

The shape of the first metatarsal head and its association with the presence of sesamoid-metatarsal joint osteoarthritis and the pronation angle.

Background: The purpose of this study was to evaluate the associations of the shape of the first metatarsal head with (1) the presence of osteoarthritis in the sesamoid-metatarsal joint and (2) the pronation angle of the first metatarsal head on foot radiographs.

Methods: A total of 121 patients, with the mean age of 61 years, underwent weight-bearing dorsoplantar, lateral, and first metatarsal axial radiographs. The shape of the first metatarsal head's lateral edge was classified as either rounded, intermediate, or angular in shape in the dorsoplantar view.

Efficacy of foot orthoses as nonoperative treatment for hallux valgus: A 2-year follow-up study.

Background: The purpose of this study was to clarify the 2-year clinical and radiological outcomes of nonoperative treatment using foot orthosis for hallux valgus patients.

Methods: Patients who underwent nonoperative treatment using foot orthosis were surveyed prospectively. Foot orthoses were made by one certified orthotist using the standardized method.

Single vs. repeated matrix metalloproteinase-13 knockdown with intra-articular short interfering RNA administration in a murine osteoarthritis model.

Our aims were 1) to estimate the duration of short interfering RNA (siRNA) effect on matrix metalloproteinase-13 () levels by a single intra-articular injection using a mouse knee osteoarthritis (OA) model and 2) to test whether repeated injections results in any additional suppressive effect on cartilage degradation compared to a single injection. OA was induced in 9 weeks old male C57BL/6 mice by destabilization of medial meniscus (DMM). Chemically modified siRNA targeted for was injected into the knee joint at 1 week post-DMM surgery.

Nonradiographic Measurement of Hallux Valgus Angle Using Self-photography.

Background: Radiographs of the feet are the reference standard for measuring the hallux valgus angle. However, the availability and use of radiographs are constrained due to cost and radiation exposure. Less invasive, nonradiographic assessments have been proposed, although measurement using self-photography has not been reported.

Avulsion fracture of the distal fibula is associated with recurrent sprain after ankle sprain in children.

Purpose: The purpose of this study was to clarify radiographic and clinical outcomes, as well as their association, of ankle sprain in children.

Methods: Patients who sustained a first-time ankle sprain were prospectively surveyed. Patients underwent radiography of the ankle in the mortise, lateral, anterior talofibular ligament (ATFL), and calcaneofibular ligament views at the first clinic visit to assess avulsion fractures of the distal fibula.

Stress fracture of the second proximal phalanx of the foot in teenage athletes: Unrecognized location of stress fracture.

Background: Adolescent athletes are a high-risk population for stress fractures. We report four cases of stress fractures of the second proximal phalanx, which had not been previously diagnosed as the location of the stress fracture of the foot, in teenage athletes.

Case Report: All fractures were on the plantar side of the proximal phalangeal base, and the oblique images of the plain radiograph clearly depicted the fractures.

Association of Anxiety and Depression With Pain and Quality of Life in Patients With Chronic Foot and Ankle Diseases.

Background: The purposes of this study were to clarify the incidence of anxiety and depression among patients with chronic foot and ankle diseases and to examine the independent association of anxiety and depression with pain and quality of life.

Methods: Patients who visited the foot and ankle clinic from April 2015 to November 2016 were recruited. Anxiety and depression in patients were assessed using the Hospital Anxiety and Depression Scale.

Upregulation of NaV1.7 in dorsal root ganglia after intervertebral disc injury in rats.

Study Design: Animal study.

Objective: To investigate pain-related expression of NaV1.7 in dorsal root ganglia (DRG) innervating intervertebral discs.

Repair of pars defects by segmental transverse wiring for athletes with symptomatic spondylolysis: relationship between bony union and postoperative symptoms.

Study Design: Retrospective study of surgery for spondylolysis patients.

Objective: To assess clinical outcome of bony union using multislice computed tomography after segmental wiring fixation.

Summary Of Background Data: How bony union affects surgical outcome of spondylolysis repair is unclear.