Survival of primary total knee arthroplasty in a modern anatomic implant with and without a short stem extension.

Introduction: In primary conventional TKA, the tibial fixation is achieved by the epiphyseal and metaphyseal zone. One of those two zones of fixation, can be compromised by the local bone quality (bone micro-architecture and resistance), previous surgery or decreased surface of contact, leading to micro-mobility of the implant and potentially leading to aseptic loosening (AL). It was our hypothesis that the addition of a short fully cemented stem would improve the metaphyseal and epiphyseal fixation of the implant.

Tibial implant design in primary TKA: retrospective comparison of two designs for the occurrence of radiolucent lines and aseptic loosening.

Introduction: The purpose of this retrospective study was to study the effect of tibial implant design on the occurrence of radiolucent lines (RLLs) and aseptic loosening (AL) by comparing two different total knee arthroplasty (TKA) designs.

Materials And Methods: Two types of total knee arthroplasty, different for tibial shape, size and keel design were compared, 255 for the first and 774 for the second. The occurrence of RLLs and radiological signs of micro- and macro-mobility and aseptic loosening was analyzed.

Mono-articular idiopathic heterotopic ossification in a Coronavirus infected patient admitted in the intensive care unit.

Heterotopic ossification (HO) designates a bone tissue formation within an atypical anatomical location and is commonly diagnosed in patients whom have suffered major traumas. The following case report presents a non-traumatic source of HO. A causality is deduced between the HO formation and an important inflammatory reaction originating from a Coronavirus infection.

Radiolucent lines around knee arthroplasty components : a narrative review.

Aseptic loosening of total knee arthroplasty (TKA) components is one of the frequent reasons for early revision together with infection and instability. Aseptic loosening is usually preceded by the observation of radiolucent lines (RLL) on radiographs. Radiolucent lines have conventionally been considered a sign of osteolysis due to particles disease of either polyethylene or cement wear.