Capitellar erosion after radial head arthroplasty: A comparative biomechanical study of operated radial head fractures on cadaveric specimens.

BACKGROUND: We asked whether open reduction and internal fixation (ORIF) or radial head arthroplasty (RHA), common techniques used for the confrontation of displaced or comminuted radial head fractures, are correlated with cartilage wear of the capitulum. HYPOTHESIS: We hypothesized that neither ORIF nor RHA are correlated with capitellar cartilage wear. MATERIAL AND METHODS: On 5 cadaveric elbow specimens, osteotomies were employed to simulate radial head comminuted fractures followed with ORIF by Herbert screws. Radial heads were also excised from other 5 cadaveric elbow specimens and were replaced by metallic monopolar implants. Finally, 2 elbows were not operated and used as a control group. Custom-made rotary machines, working unstoppably, generated 700,000 pronation and supination forearm movements at a 110° arc of motion. The elbow joints were examined with pre- and postoperative magnetic resonance imaging (MRI) scans and the articular surfaces of the capitula were resected and sent for histopathology study. RESULTS: In the 2 cadaveric elbows of the control group and the 4 elbows treated with ORIF, no cartilage damage was found. The fifth one displayed cartilage fissures, which were, classified according to International Cartilage Repair Society (ICRS) grading system as grade I cartilage damage. On the contrary, all 5 elbows treated with RHA sustained complete cartilage loss, exposure of the subchondral bone and were classified as ICRS grade IV cartilage damage. DISCUSSION: Our study suggests that metallic monopolar RHA after a displaced or comminuted radial head fracture carries a high risk of rapidly evolving cartilage loss of the capitulum.

Management of a patient with Opalski's syndrome in intensive care unit and mini review of the literature.

Stroke syndromes include a variety of syndromes with often overlapping clinical presentations. When ipsilateral hemiplegia is associated with symptoms of a lateral medullary syndrome, it corresponds to the submedullary syndrome of Opalski. A 72-year-old woman presented with sudden onset of headache, gait disturbance, and recurrent vomiting. Her clinical status gradually deteriorated and she was admitted to the intensive care unit where a variety of problems, related to her diagnosis (Opalski syndrome), were managed.

Cardio-renal anemia syndrome.

The interaction between chronic heart failure, chronic kidney insufficiency and anemia, form a vicious cycle, termed as the cardio-renal anemia syndrome. The interaction between these three conditions causes deterioration of the cardiac and renal function and increases anemia. Each of the three can cause or be caused by the others.We herein analyze and speculate the mechanisms involved in the pathophysiology of this new syndrome highlighting the main points of interest that seem to expand upon more than one specialty. The cardio-renal anemia syndrome is emerging in the area of clinical investigation with progressively elevated significance. Additionaly we report the data related to anemia treatment as part of therapeutic perspective concerning the management of patients manifesting the profile of this syndrome.