The influence of virtual reality simulation on surgical residents' heart rate during an assessment of arthroscopic technical skills: A prospective, paired observational study.

Hypothesis: To demonstrate that a virtual reality (VR) simulation training program reduces heart rate variability during an assessment of surgical trainees' technical skills in arthroscopy.

Study Design: Prospective observational matched study.

Materials & Methods: Thirty-six orthopaedic surgery residents, new to arthroscopy, received standard training in arthroscopic knee surgery, supplemented by additional monthly training for 6months on a VR simulator for 16 of them.

All the menisco-ligamentary structures of the medial plane play a significant role in controlling anterior tibial translation and tibial rotation of the knee. Cadaveric study of 29 knees with the Dyneelax® laximeter.

Purpose: This study aimed to determine the respective roles of the anterior cruciate ligament (ACL) and the different components of the medial plane in the control of anterior tibial translation and internal and external tibial rotation.

Methods: Twenty-nine fresh lower limbs, disarticulated at the hip, were tested in the anatomy laboratory. The following structures were isolated: the ACL, the anteromedial retinaculum (AMR), the medial collateral ligament (superficial and deep MCL), the posterior medial capsule (PMC) and the posterior horn of the medial meniscus (PHMM).

Virtual reality simulation training improve diagnostic knee arthroscopy and meniscectomy skills: a prospective transfer validity study.

Purpose: Limited data exist on the actual transfer of skills learned using a virtual reality (VR) simulator for arthroscopy training because studies mainly focused on VR performance improvement and not on transfer to real word (transfer validity). The purpose of this single-blinded, controlled trial was to objectively investigate transfer validity in the context of initial knee arthroscopy training.

Methods: For this study, 36 junior resident orthopaedic surgeons (postgraduate year one and year two) without prior experience in arthroscopic surgery were enrolled to receive standard knee arthroscopy surgery training (NON-VR group) or standard training plus training on a hybrid virtual reality knee arthroscopy simulator (1 h/month) (VR group).

A recurrent prosthetic joint infection caused by : case report and literature review.

Prosthetic knee joint infection caused by is uncommon and only one case of recurrent infection has previously been described. Here, we describe the case of a 77-year-old male patient who was admitted to the teaching hospital of Rennes (France) with bilateral and nocturnal gonalgia evolving for 1 month. He had bilateral knee prosthesis 10 years ago, and a history of large B-cell lymphoma in remission.

Microbiology and antibiotics after second-stage revision of periprosthetic joint infections: A two-year follow-up cohort.

Background: Optimal duration of antimicrobial regimen after reimplantation of two-stage procedures for periprosthetic joint infection (PJI) is poorly standardized. The aim of this study was to assess the characteristics of reimplantation microbiology with 6 weeks (2nd stage positive culture) or 10 days (2nd stage negative culture) of antibiotics in patients with complex chronic PJI and factors associated with microbiology at reimplantation.

Patients And Methods: We performed a retrospective single-center study including all consecutive complex PJI recipients managed by two-stage surgery in a referral centre, from 2015 to 2018.

High-level judo practice after hip resurfacing.

Background And Hypothesis: The ability to participate in sports after hip arthroplasty is increasingly being requested by patients. The possibilities of participating in sports such as judo after hip arthroplasty have not been explored sufficiently even though these sports are associated with a high risk of loosening, dislocation or revision. The aim of this study was to evaluate the return to judo after hip resurfacing arthroplasty (HRA) in terms of time and level of practice in an expert population and to determine the surgical complication rate.

Publication rate of studies presented at the French Arthroscopic Society Meeting in 2014.

Introduction: Publication rates for studies reported at French Arthroscopic Society (Société francophone d'arthroscopie, SFA) meetings are not known. A comprehensive search of podium presentations to the 2014 SFA meeting was performed, assessing: (1) publication rate for meeting abstracts, and (2) bibliometric parameters including journal Impact Factor.

Hypothesis: The full-text publication rate for abstracts accepted for the 2014 French Arthroscopic Society (SFA) meeting was around 47.

Virtual reality simulator improves the acquisition of basic arthroscopy skills in first-year orthopedic surgery residents.

Introduction: Arthroscopy training using a virtual reality (VR) simulator is said to improve the training of orthopedic surgery residents, although it has never been evaluated in a large representative population of first-year residents.

Hypothesis: We hypothesized that first-year residents who train on a VR simulator would improve their basic arthroscopy skills more than residents who use other training methods. The primary aim was to compare various arthroscopy-learning techniques after 6 months of training.

Evaluation of arthroscopic skills with a virtual reality simulator in first-year orthopaedic residents.

Purpose: This study of residents' initial performance was performed to determine which factors predisposed residents for success in demonstrating the best arthroscopic skills.

Methods: Each orthopaedic first-year resident was officially invited to take part in a one hour evaluation on a VirtaMed™ ArthroS™ simulator. On the FAST module, the Periscoping exercise was chosen to test for use of angled optics.

Extraction of total knee arthroplasty intramedullary stem extensions.

Intramedullary stem extensions will need to be extracted during total knee arthroplasty (TKA) revisions, especially repeated ones. These stems have various designs and lengths, can be straight or offset, cemented (partially or totally) or cementless, smooth or rough. This diversity adds to the difficult of extracting them, which the surgeon must anticipate before starting the revision procedure.

Does performing outpatient total hip arthroplasty contribute to early complications and readmissions? Retrospective case-control study of 50 patients.

Introduction: Advances in anesthesia and surgical practices have allowed total hip arthroplasty to be performed as an outpatient procedure. The aim of this study was to demonstrate its feasibility in a selected population compared to a group of inpatients by analyzing the cumulative length of hospital stay, complications and readmissions.

Patients And Methods: This was a retrospective, single-surgeon study of continuous adult patients between October 2016 and May 2018 who underwent primary total hip arthroplasty (THA) and were eligible to undergo this procedure either as an inpatient or outpatient based on their health and comprehension level.

Have the frequency of and reasons for revision total knee arthroplasty changed since 2000? Comparison of two cohorts from the same hospital: 255 cases (2013-2016) and 68 cases (1991-1998).

Introduction: The number of total knee arthroplasty (TKA) revisions is expected to increase 601% in the United States between 2005 and 2030. This type of information is not available in France, and the last national study on this topic was done in 2000. This led us to perform a comparative study to determine if 1) the frequency of TKA revisions has increased and 2) the reasons for reoperation have changed relative to data gathered in 2000 at a single hospital in France.

Acetabular reconstruction using porous metallic material in complex revision total hip arthroplasty: A systematic review.

Bone defects during acetabular revision of total hip arthroplasty raise a problem of primary fixation and of durable reconstruction. Bone graft with direct cemented fixation or in a reinforcement cage was long considered to be the gold standard; however, failures were reported after 10 years' follow-up, especially in segmental defect of the roof or pelvic discontinuity. In such cases, metallic materials were proposed, to ensure primary fixation by a roughness effect with added screws, and especially to avoid failure due to bone resorption in the medium term.

New diagnostic tools for prosthetic joint infection.

The diagnosis of peri-prosthetic bone and joint infections relies on converging information from clinical, laboratory and imaging assessments. Clinical findings alone may suffice: a sinus tract is a major criterion that establishes the diagnosis of infection. Identifying the causative organism is crucial and requires the early collection of high-quality samples from sites in contact with the prosthetic material.

Are ligament-tensioning devices interchangeable? A study of femoral rotation.

Background: During total knee arthroplasty (TKA), femoral rotation can be adjusted either in relation to bony landmarks or by tensioning the ligaments with the knee in 90° of flexion. The primary objective of this study was to compare femoral rotations achieved using various ligament-tensioning devices. The secondary objective was to compare these femoral rotations to that indicated by the transepicondylar axis (TEA).

Are spinoglenoid ganglion cysts early markers of glenohumeral arthritis?

Hypothesis: The objective of this study was to improve our understanding of the pathogenesis and symptoms of ganglion cysts (GCs) in the spinoglenoid notch. Two hypotheses were tested: (1) the labral tears responsible for these cysts are mainly degenerative and nontraumatic, (2) spinoglenoid cysts are early magnetic resonance image (MRI) markers of eccentric posterior glenoid wear.

Materials And Methods: This was a descriptive diagnostic study.

Predictors of failure for prosthetic joint infections treated with debridement.

Objective: Prosthetic joint infections (PJI) may be cured in selected patients with debridement and prosthesis retention. We aimed to identify predictors of failure to better target patients most likely to benefit from this conservative strategy.

Methods: Observational study of patients presenting with PJI initially treated at our hospital with debridement between 2008 and 2011, with>6 months of post-treatment follow-up.

[Metastasizing primary duodenal cancer. Extended remission in a patient following chemotherapy].

Extended, especially metastatic primary duodenal cancer is thought to be of extraordinary bad prognosis, and is hardly to be influenced by chemotherapy. In the meantime we were able to achieve a 20-month lasting remission in a patient with metastatic duodenal cancer treated with the FAM-regime.

[Clinical and prognostic relevance of the Kiel classification of non-Hodgkin lymphomas].

The Kiel classification provides a new subdivision of non-Hodgkin lymphomas into distinct entities showing different clinical and prognostic properties. In comparison with earlier classifications this system defines additional types of lymphoma (e.g.

Clinical and prognostic relevance of the Kiel classification of non-Hodgkin lymphomas results of a prospective multicenter study by the Kiel Lymphoma Study Group.

Clinical and prognostic relevance of the Kiel classification of non-Hodgkin lymphomas (NHL) was investigated in 1127 patients entering a prospective multicenter observation study. Survival of the 782 (69.4 per cent) patients with low-grade malignant NHL (lymphocytic lymphomas, predominantly B-CLL, LP immunocytoma, centrocytic lymphoma, centroblastic-centrocytic lymphoma) exceeded that of the 341 patients (30.

Algorithm for a DNA-cytophotometric diagnosis and grading of malignancy.

An algorithm for processing data on nuclear DNA content obtained cytophotometrically was developed (1) to obtain an objective discrimination between benign and malignant lesions in conventional cytologic smears secondarily stained according to Feulgen and (2) to obtain an objective degree of tumor malignancy on a continuous scale of malignancy grades. Investigations in 258 malignant tumors (95 malignant lymphomas, 52 uterine cervix carcinomas, 28 prostate carcinomas, 18 breast carcinomas, 45 malignant bone tumors and 19 larynx carcinomas) and in 74 benign lesions in these organs yielded a diagnostic accuracy of no false-positive, no false-negative and 21% suspicious diagnoses. The probability that "suspicious" cases were malignant was 81%.

Studies on various parameters influencing leukemic cell destruction by alkyl-lysophospholipids.

Critical parameters of alkyl-lysophospholipid (ALP) induced destruction of freshly isolated human leukemic cells have been evaluated. The destructive activity of ALP is shown to be competitively inhibited by metabolizable lysophospholipids added to the cultures. It has also been found that destruction depends on the amount of serum present.