Climate-induced changes in the suitable habitat of cold-water corals and commercially important deep-sea fishes in the North Atlantic.

The deep sea plays a critical role in global climate regulation through uptake and storage of heat and carbon dioxide. However, this regulating service causes warming, acidification and deoxygenation of deep waters, leading to decreased food availability at the seafloor. These changes and their projections are likely to affect productivity, biodiversity and distributions of deep-sea fauna, thereby compromising key ecosystem services.

Relevancy and reproducibility of magnetic resonance imaging (MRI) interpretation in multiple-ligament injuries and dislocations of the knee.

Introduction: After multiple-ligament injuries and dislocations of the knee, clinical assessment of the soft tissues is difficult and MRI is generally performed.

Hypothesis: MRI is a reliable examination, providing a precise and reproducible assessment of soft-tissue lesions after multiple-ligament injuries or dislocations of the knee.

Materials And Methods: Forty patients presenting multiple-ligament lesions of the knee were included in this multicenter prospective study.

Survival analysis of an asymmetric primary total knee replacement: a European multicenter prospective study.

Purpose Of The Study: This multicenter prospective study objective is to provide midterm results and 10-year survival analysis of the original Natural Knee-I System™ as experienced by a group of surgeons performing, within various settings, primary total knee replacement (TKR) in the general population.

Hypothesis: The midterm experience with this TKR system in the hands of independent surgical teams can duplicate the satisfaction level that was already published by the designer's group itself.

Material And Method: Two hundred and sixty-three primary TKR were performed by seven surgical teams (37 surgeons) and prospectively evaluated in four European countries.

Dislocation and bicruciate lesions of the knee: epidemiology and acute stage assessment in a prospective series.

Introduction: Knee dislocation and bicruciate lesions are rare. Assessments of results from retrospective series carry an insufficient level of evidence. A prospective multicenter study was therefore set up, under the auspices of the French Society of Orthopedic Surgery.

[Femoral neck fractures in patients over 50 years old].

Introduction: Despite many papers and instructional course lectures, therapeutic guidelines are not clearly defined about treatment of femoral neck fractures. The aim of this multicentric French symposium was to prospectively study the results of current therapeutic options in order to propose scientifically proven options.

Material And Methods: Three prospective studies were carried out in order to answer to these questions: (1) is it possible with anatomical reduction and stable fixation to lower the non union and osteonecrosis rate? (2) is functional treatment of Garden 1 fractures successful in more than 65 years patients? (3) what criteria are useful to choose the kind of arthroplasty for more than 65 years patients?

Results: For the 64 patients between 50 and 65 years old included in the first study, 44 ORIF and 17 prostheses were performed.

[Metal-on-metal hip replacement using Metasul cups cemented into Muller reinforcement rings after a mean 5-year (3-8) follow-up: improvement of acetabular fixation by comparing with direct cementation to bone].

Purpose Of The Study: Early loosening, before a three-year follow-up, has been observed with cemented cups having a metal-on-metal insert in a polyethylene cup. The metal-on-metal bearing has been incriminated as the source of the problem because of its rigidity (particularly for small cups measuring less than 50 mm) and the creation of stress conditions unfavorable for a cemented fixation. The purpose of this retrospective study was to determine whether this phenomenon is observed when the cement is fixed not directly into the bone, but via a Muller reinforcement ring.

THA using metal-on-metal articulation in active patients younger than 50 years.

Unlabelled: The main concern of patients with longer life expectancies and of patients who are younger and more active is the longevity of their total hip arthroplasty. We retrospectively reviewed 83 cementless total hip arthroplasties in 73 patients implanted with metal-on-metal articulation. All patients were younger than 50 years old (average age, 41 years) at the time of the index procedure, and 80% of the patients had an activity level graded 4 or 5 when measured with the system of Devane et al.

[Polyethylene liner replacement: behavior and morbidity in 68 cases].

Purpose Of The Study: Isolated acetabular polyethylene exchange is advocated as an advantage of metal-backed cups, since the acetabular bone stock can be spared and operative time is shorter. The purpose of this study was to determine whether this is true.

Material And Methods: A consecutive serie of 68 THA revisions involving replacement of the polyethylene liner was analyzed retrospectively (liner replacement alone for 37 hips and liner replacement plus femoral component revision for 31).

[Low accuracy of the anterior pelvic plane to guide the position of the cup with imageless computer assistance: variation of position in 106 patients].

Purpose Of The Study: The anterior pelvic plane, also called the Lewinnek plane, is commonly used as the reference plane to guide imageless computer assisted surgery for total hip arthroplasty (THA) because this plane is considered to be globally vertical in the standing position. To our knowledge, no study has evaluated this hypothesis or the potential variations in orientation as a function of gender, position of the subject, or THA insertion. The purpose of this work was to examine these different hypotheses in a radio-clinical study.

[A new type of acetabular fracture: "true" posterosuperior fracture, a case report].

We report a new variety of acetabular fracture. This posterosuperior fracture affected the acetabular roof and the iliac wing as other superior fractures and presented a supplementary fracture line disjoining the major part of the posterior wall. Two our knowledge, in a series of 940 fractures of the acetabulum, Letournel alone described two cases of superior fractures involving the roof with a slightly anterior fracture line in the iliac wing but with an intact posterior wall in both cases.

[Bilateral Moore hemiarthroplasty: 36 years of good tolerance without loosening or osteolysis].

We report an illustrative case of bilateral Moore arthroplasty with the clinical and radiographic results at 36 years follow-up. The femoral prostheses were implanted for necrosis of the femoral head when the patient was 46 years old. At implantation the patient's physical activity level was high (Devane 4) and remained so until retirement at age 65 years.

[Computer-assisted positioning of the acetabular cup for total hip arthroplasty based on joint kinematics without prior imaging: preliminary results with computed tomographic assessment].

Purpose Of The Study: Most navigation systems for computer-assisted total hip arthroplasty (THA) require prior computed tomography (CT) or acquisition of multiple bone landmarks on the pelvis. In order to avoid these problems, we developed a computer-assisted navigation system without CT based on a kinematic approach to the hip joint. The principle is to orient the cup in relation to the cone describing the hip joint range of motion.

Relationship between posttrauma GABA plasma levels and PTSD at 1-year follow-up.

Objective: Gamma-aminobutyric acid (GABA) exerts a prominent effect on central adrenergic stress responses in times of high stress and has been associated with acute posttraumatic stress disorder (PTSD). The authors examined the association between low posttrauma plasma GABA levels and long-term PTSD.

Method: Plasma GABA levels were measured in 78 victims of road traffic accidents who met criteria for trauma exposure on arrival at a trauma department and were admitted for at least 3 days.

[Reliability of porous coating metal-backed cups: advantages and adverse effect of a posterior elevated rim polyethylene liner].

Purpose Of The Study: We analyzed primary implantation of the Duraloc cup associated with a self-locking Muller stem at 9.6 +/- 1.6 years (8.

[Measurement of head penetration on digitalized radiographs: reproducibility and accuracy].

Purpose Of The Study: Wear of the acetabular component of total hip arthroplasty (THA) is incriminated as the cause of loosening and bone resorption. Consequently, an accurate evaluation of wear can contribute to the prediction of mechanical failure of the arthroplasty. Among the different methods proposed, digitalized imaging using a high-resolution scanner associated with data processing procedures appears to be a simple easily accessible technique.

Cementless metal-on-metal hip arthroplasty in patients less than 50 years of age: comparison with a matched control group using ceramic-on-polyethylene after a minimum 5-year follow-up.

Thirty-nine cementless hip arthroplasties using metal-on-metal articulation were consecutively implanted in 30 patients less than 50 years of age and compared with a matched control group (by age, diagnosis, Devane activity, and Harris hip scores) of cementless arthroplasties using ceramic-on-polyethylene articulation. The Harris hip score at follow-up (minimum 5 years) for the metal-on-metal was 94.9 (range, 74-100).

Parasitic infection of sole Solea solea by Prosorhynchus spp. metacercariae (Digenea, Bucephalidae) in Atlantic nurseries under mussel cultivation influence.

Cysts of metacercariae were obtained on 2 dates from juvenile sole Solea solea sea-sampled in an area of mussel cultivation (Pertuis Charentais, Bay of Biscay, France). An initial assessment of parasite genus and infestation level was based on 192 cysts extracted from 2 fish samples, taken in August (n = 20) and December 2000 (n = 14). Our results confirmed the sole as second intermediate host of bucephalid trematodes of the genus Prosorhynchus, which has not previously been noticed in Atlantic stocks.

Low posttrauma GABA plasma levels as a predictive factor in the development of acute posttraumatic stress disorder.

Background: Gamma amino-butyric acid (GABA) regulates the intensity and the duration of the central hyperadrenergic response in times of high stress and has been negatively associated with anxiety, depression, and sleep problems. We hypothesized that individuals with low plasma GABA levels may be more prone to develop posttraumatic stress disorder (PTSD) in the aftermath of trauma exposure.

Methods: To test this hypothesis, we measured plasma GABA levels in a population of 108 road traffic accident victims on arrival at a traumatology department and assessed them for PTSD 6 weeks later.

[Pseudo-winging of the scapula and snapping scapula secondary to solitary exostosis: two cases].

Pseudo-winging of the scapula and scapular snapping are two clinical signs of upper girdle insufficiency. The association of these two signs is highly suggestive, if not pathognomonic, of exostosis of the ventral aspect of the scapula. Resection of the exostosis is recommended to prevent pain and sarcomatous degeneration.

Fright (effroi) and other peritraumatic responses after a serious motor vehicle accident: prospective influence on acute PTSD development.

Objective: We prospectively examined the relation between various peritraumatic responses (that is, fear, helplessness, horror, amnesia, and fright) and the development of posttraumatic stress disorder (PTSD) 2 months after a trauma.

Method: Participants included 123 motor vehicle accident (MVA) victims consecutively hospitalized in a traumatology department for over 72 hours during a 16-month period. Between day 2 and day 5 of their hospitalization, a psychiatrist assessed the patients' peritraumatic responses and acute stress disorder (ASD).

[Management of stiffness after total knee arthroplasty: indication for different mobility management in 62 cases].

Purpose Of The Study: Stiffness of the knee is a common reason for revision of total knee arthroplasty. Three methods are currently used to mobilize the knee: manipulation under general anesthesia, arthroscopic release, open surgical release. The purpose of the present work was to determine the respective indications of these three procedures in a large single-center study.