Inconclusive and Contradictory Evidence for Outcomes After Hip Arthroscopy in Patients With Femoroacetabular Impingement and Osteoarthritis of Tönnis Grade 2 or Greater: A Systematic Review.

Purpose: To investigate whether hip arthroscopy (HA) is effective in patients with femoroacetabular impingement and concomitant hip osteoarthritis (OA) of Tönnis grade 2 or greater.

Methods: This review was registered in the International Prospective Register for Systematic Reviews and Meta-analysis (PROSPERO, CRD42020210936). It followed the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-analyses) guidelines and included multiple databases: MEDLINE, Embase, Web of Science Core Collection, and Cochrane Library.

Radiative effects of atmospheric aerosols on the average channel capacity of free-space optical communication systems.

Free-space optical (FSO) communication systems employ unguided light beams propagating through the atmosphere to carry a large volume of data. The reliability of such data transfer can be hampered by various atmospheric effects. Based on an analytical model of a differential phase-shift keying FSO system through exponentiated Weibull turbulence, we investigate the effectiveness of beam width optimization and improved beam alignment, along with aperture averaging on the average channel capacity.

Outcomes of Hip Arthroscopy in Patients with Femoroacetabular Impingement and Concomitant Tönnis Grade II Osteoarthritis or Greater: Protocol for a Systematic Review.

Introduction: Outcomes of hip arthroscopy for femoroacetabular impingement and concomitant moderate- to advanced hip osteoarthritis (Tönnis Grade II or greater) is still a matter of debate as findings in the literature are controversial. This study aims to investigate whether hip arthroscopy is effective in treating patients with femoroacetabular impingement and Tönnis hip osteoarthritis Grade II or greater.

Methods And Analysis: The protocol follows the PRISMA-P guidelines.

Enhanced optical pulse broadening in free-space optical links due to the radiative effects of atmospheric aerosols.

Propagation through turbulent media produces complex amplitude fluctuations and temporal spreading of narrow optical pulses. Light-absorbing aerosols present in the atmospheric transmission path will perturb the refractive index structure parameter (Cn2) through atmospheric heating. The consequent enhancement in broadening and attenuation of ultrashort (femtosecond) optical pulses has been calculated by combining multi-satellite observations, radiosonde profiles and computational radiative transfer.

Collagenofibrotic glomerulopathy: A case of glomerular deposition disease in the Indian subcontinent and review of the literature.

Collagenofibrotic glomerulopathy (CG) is a rare renal disease with unknown etiology, defined by deposition of Type III collagen fibers in the subendothelial space and mesangium seen on supported by electron microscopy. There are merely 19 cases reported in the literature from the Indian subcontinent. Herein, we present a case report of CG from the Indian subcontinent and review its literature mainly focusing on histopathological findings.

Entanglement of near-surface optical turbulence to atmospheric boundary layer dynamics and particulate concentration: implications for optical wireless communication systems.

Localized reduction in optical turbulence due to enhanced atmospheric heating caused by the solar absorption of aerosol black carbon (BC) is reported. Immediate response of atmospheric turbulence to BC-induced atmospheric warming strongly depends on the available solar radiation (time of the day), BC concentration, and atmospheric boundary layer dynamics. Besides the significant climate implications of a reduction in turbulence kinetic energy, a large reduction in the refractive index structure parameter (2) resulting from BC-induced warming would affect the atmospheric propagation of laser beams.

Performance of free-space optical communication systems: effect of aerosol-induced lower atmospheric warming.

We report the effect of aerosol-induced local atmospheric heating and the resulting changes in the lower atmospheric optical turbulence on the performance of Free-Space Optical (FSO) communication links. A closed form mathematical expression is derived to estimate the influence of aerosol-induced warming on the Bit Error Rate (BER) of a Binary Phase Shift Keying FSO communication link through Gamma-Gamma modeled turbulence. Our results demonstrate a strong impact, with the aerosol-induced turbulence taking a toll on the signal-to-noise ratio of ~20 dB for a BER of 10.

Distinctive roles of elevated absorbing aerosol layers on free-space optical communication systems.

The impact of enhanced local heating due to absorption of solar radiation by elevated layers of aerosol black carbon (BC) in the lower troposphere in the performance of free-space optical (FSO) communication links is investigated. It is seen that a strong elevated BC layer at an altitude around 4.5 km enhances the atmospheric stability locally and leads to a large reduction in the atmospheric refractive index structure parameter (Cn2), leading to improved performance of the FSO communication links.

Timing of manipulation under anaesthesia for stiffness after total knee arthroplasty.

Stiffness following total knee arthroplasty (TKA) is a debilitating condition for the patient with limitation of functional outcome. There are various causes of stiffness, which can be classified as pre-operative, per-operative and post-operative. Arthrofibrosis is one of the causes, which can be managed in different ways, and manipulation under anaesthesia (MUA) is routinely performed as the first line of management.

Efficacy of orally disintegrating film of ondansetron versus intravenous ondansetron in prophylaxis of postoperative nausea and vomiting in patients undergoing elective gynaecological laparoscopic procedures: A prospective randomised, double-blind placebo-controlled study.

Background And Aims: Ondansetron is one of the most widely used drugs for postoperative nausea and vomiting (PONV) prophylaxis. Orally disintegrating film (ODF) formulations are relatively recent innovations. We evaluated the efficacy of ODF of ondansetron for the prophylaxis of PONV.

Randomized controlled trial of DOTS versus conventional regime for treatment of ileocecal and colonic tuberculosis.

There is limited information regarding the efficacy of 'directly observed treatment short course' (DOTS) in the treatment of intestinal tuberculosis. We randomized patients with ileocecal or colonic tuberculosis to receive daily tuberculosis chemotherapy (Group A) or DOTS (Group B). Patients received isoniazid, rifampicin, pyrazinamide and ethambutol daily for two months in group A and thrice weekly for 2 months in group B, followed by isoniazid and rifampicin daily for 7 months in group A and thrice weekly for 4 months in group B.

Non-familial juvenile polyposis in prolapsed rectum.

Juvenile polyposis located solely on prolapsed rectal mucosa is very unusual. We report the case of a 17-year old boy who presented to us with a history of passage of blood and mucus per rectum of a mass protruding through the anus during defecation. Per rectal and colonoscopic examinations revealed numerous polyps located solely on the prolapsed rectal mucosa.

External resection of a giant sigmoid lipoma causing colonic intussusception and prolapse through the anal canal.

We depict the case of an 80-year-old female patient who presented to us with a history of protruding mass per anum. Sigmoidoscopy revealed a large globular pedunculated polyp at 22 cm from the anal verge resulting in a sigmoidorectal intussusception. Endoscopic polypectomy was not technically possible due to the large size of the polyp.

Endoscopic abnormalities in the oesophagus after variceal sclerotherapy--a long-term follow up study.

Endoscopic sclerotherapy is a well-established treatment modality for oesophageal varices. Various local, regional and systemic complications occur after sclerotherapy. Altered endoscopic appearances of the oesophagus have been observed on follow-up of patients after sclerotherapy.

Videoanoscopy: useful technique in the evaluation of hemorrhoids.

Background And Aim: Rigid proctoscopy, the gold standard for detecting hemorrhoids, has become a neglected procedure in the era of flexible endoscopy. Evaluation of hemorrhoids is often done with the retroflexed fiberoptic colonoscope. The aim of this study was to evaluate the technique of videoanoscopy in comparison with retroflexion of colonoscope in the rectum to detect hemorrhoids and to correlate objective findings of hemorrhoids and their relation to bleeding.

Profile of colonic polyps in a southern Indian population.

Background: In Western countries, colonic polyps are usually adenomatous in nature, are evenly distributed along the entire colon in asymptomatic per-sons and show a left-sided predominance in symptomatic patients. There is dearth of such literature from India.

Methods: We retrospectively analyzed reports of colonoscopies done in our institution during the period 2001 to 2005.

Prevalence of Hepatitis B and C in the normal population and high risk groups in north Kerala.

Background: Our aim is to assess the prevalence of Hepatitis B and Hepatitis C infections among normal healthy persons and high risk groups in the northern part of Kerala state in South India as there is insufficient published literature related to this subject.

Methods: HBsAg and AntiHCV screening were done in normal persons and in high risk groups. Normal persons screened included voluntary blood donors, those attending mandatory medical check up for jobs in middle east Asia and pregnant women.

Reproducibility and validity of oral visual inspection by trained health workers in the detection of oral precancer and cancer.

A randomized intervention trial is in progress in Kerala, India, to evaluate the effectiveness of oral visual inspection by trained health workers (HWs) in the prevention of oral cancer. Fourteen health workers with college graduation as the basic qualification were trained in oral visual inspection to identify oral cancers and precancers among the participants of the screening trial and to refer them for further confirmation and management. The aim of the present study was to evaluate the reproducibility and validity of the screening test provided by the health worker against the reference oral visual findings of three physicians.