Cadaveric Study Evaluating the Potential for Hindfoot Endoscopy and Flexor Hallucis Longus Tendoscopy Using a 1.9-mm Diameter Needle Arthroscope.

Background: Hindfoot endoscopy is an effective treatment for posterior ankle impingement syndrome (PAIS) and flexor hallucis longus (FHL) tendon disorders. However, FHL tendoscopy, especially from the posteromedial portal, carries a risk of tibial nerve damage. A needle-arthroscopic system with a 1.

Detection of ultrafast electron energization by whistler-mode chorus waves in the magnetosphere of Earth.

Electromagnetic whistler-mode chorus waves are a key driver of variations in energetic electron fluxes in the Earth's magnetosphere through the wave-particle interaction. Traditionally understood as a diffusive process, these interactions account for long-term electron flux variations (> several minutes). However, theories suggest that chorus waves can also cause rapid (< 1 s) electron acceleration and significant flux variations within less than a second through a nonlinear wave-particle interaction.

Association between acetabular coverage over femoral head and rate of joint space narrowing in non-arthritic hips.

Aims: This study was performed to investigate the association between the acetabular morphology and the joint space narrowing rate (JSNR) in the non-arthritic hip.

Methods: We retrospectively reviewed standing whole-leg radiographs of patients who underwent knee arthroplasty from February 2012 to March 2020 at our institute. Patients with a history of hip surgery, Kellgren-Lawrence grade ≥ II hip osteoarthritis, or rheumatoid arthritis were excluded.

Work functioning impairment and telework: Influence of family cohabiting situation.

Objectives: To clarify the association between telework with family members at home and work functioning impairment.

Methods: A cross-sectional survey was conducted in 27,036 participants. Having children or cohabitants in need of care at home during telework was considered an exposure factor.

Impact of family cohabitation status and work-from-home on sleep problems among Japanese workers during the COVID-19 pandemic: a cross-sectional study.

Objective: This cross-sectional study examined the impact of family cohabitation status and work-from-home (WFH) on sleep during the COVID-19 pandemic.

Methods: An online survey of 27,036 Japanese workers assessed WFH frequency, family cohabitation, and trouble sleeping to estimate odds ratios (OR) for sleep problems from December 22 to 26, 2020.

Results: In multivariate analysis, WFH had no significant benefit for trouble sleeping ≥3 months.