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Repulsive lubrication on hydrophilic surfaces

Aleksandra Mrela; Zenon Pawlak*

    The lamellar-repulsive mechanisms for aqueous boundary lubrication supported by phospholipid bilayers negatively charged and 80% hydrated surfaces. It is shown that cartilage being a smart material has a hydrophilic surface being intact and hydrophobic when the surface is the air-dry condition. We discuss a controversy associated with the hydrophobic mechanism of boundary lubrication introduced by Hills in 1984.


Changes in the structure of synovial fluids between healthy joints and in osteoarthritis

Aleksandra Mrela; Zenon Pawlak*

    When a mammal’s joint is healthy, the nanostructure of phospholipid bilayers is corrugated, and some phospholipids can be observed in the synovial fluid. During illness, like osteoarthritis, β2-Glycoprotein I changes conformation from closed to open hockey-stick-like, resulting in the degeneration of phospholipid bilayers and an increase in phospholipid levels in the synovial fluid.


Aneurysmal bone cyst of the fibular malleolus: Report of an additional case at rare site

Jean Marie Vianney Hope*; Mohamed Sidibe; Jean Claude Sane; Souleymane Diao; Joseph Davy Diouf; Anselme Noaga Nikiema; Amadou Ndiassé Kassé; Mouhamadou Habib Sy

    Aneurysmal Bone Cyst (ABC) is a benign expansile lesions that may occur in any bone in the body, often affecting individuals during their second decade of life. In the modern English language literature, aneurysmal bone cyst occurring at the level of fibular malleolus is rare. Here, we report an additional such case arising from the fibular malleolus of a 16-year-old female patient successfully treated with en-bloc excision and ankle joint stabilization with tibiotalar joint arthrodesis by two cancellous screws and lateral ligament reconstruction.


Indications and clinical outcomes of High Tibial Osteotomy: A literature review

Shakeel Sarwar; Jun Lu*; Cicilia Marcella; Ming-liang JI

    Background: High Tibial osteotomy is a procedure with the goal of repositioning the mechanical axis of a varus malaligned knee into a slightly valgus one, in order to minimize joint tenderness, decrease the rate of cartilage degeneration and forestall or postpone joint replacement.


Lesson of the month: Proactive multidisciplinary management of bone metastases in poor prognostic disease to optimise patient wellbeing and function

Elizabeth Green; Mark Price ; Tom Wells*

    This case discusses a fit young man diagnosed with cancer of unknown primary. In the context of disease with a poor prognosis, his case highlights the challenges of weighing up the pros and cons of active and aggressive treatment options, including prophylactic orthopaedic surgery for long bones at high risk of pathological fracture, to maintain function and quality of life.


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