[Concept of coronal alignment in total knee arthroplasty].

Total knee arthroplasty (TKA) is one of the most performed orthopedic surgeries worldwide. For many years, TKA implants were positioned according to a systematic approach known as mechanical alignment, which prioritized implant survival over the restoration of a more physiological knee. A high dissatisfaction rate of 20% after knee prosthesis has led to a rethinking of coronal alignment and a move towards a more personalized approach.

One-stage exchange strategy with extensive debridement for chronic periprosthetic joint infection following total knee arthroplasty is associated with a low relapse rate in non-selected patients: a prospective single-center analysis.

Purpose: This prospective clinical cohort was undertaken to determine the long-term risks of reinfection and all-cause aseptic failure after 1-stage exchange total knee arthroplasties (TKA) in a large series of consecutive patients with periprosthetic joint infection (PJI) following TKA.

Hypothesis: One-stage exchange for chronic PJI is an effective strategy, even in a non-selected population.

Patients And Methods: Non-selected patients (152 with 154 PJI) undergoing 1-stage-exchange TKA for PJI (January 2003-August 2015) were prospectively included and monitored for ≥2 years.

Change in lower limb length following total knee arthroplasty.

Background: Length variations of the lower limbs after total knee arthroplasty (TKA) constitute a poorly evaluated parameter and can be associated with worse functional outcomes. The objectives of this study were to: (1) describe the variations in the lower limb length after TKA according to the digital accuracy of the computerized navigation system used for prosthesis implantation, (2) describe patient sensation of limb length modification at 3 months postoperatively and to identify its risk factors, (3) identify factors affecting lower limb length modification and to analyze the predictive value causing in the patient the sensation of lower limb discrepancy.

Hypothesis: We hypothesize that there may be a lower limb length discrepancy after TKA, which may cause some distress to the patient.

Induced membrane technique for malignant bone tumours of the humerus.

Purpose: The aim of this study was to report on mid- to long-term results following large humeral tumoral resection and reconstruction with the induced-membrane technique in skeletally immature patients suffering from primary malignant bone tumours.

Methods: A retrospective analysis identified all children who underwent the two stages of a humeral reconstruction using the induced-membrane technique for primary malignant humerus tumours between 2002 and 2020. Functional assessment was conducted by an independent observer using the Musculoskeletal Tumor Society (MSTS) scoring system for the upper limb.