Vitamin E-enriched medium cross-linked polyethylene in total knee arthroplasty (VIKEP): clinical outcome, oxidation profile, and wear analysis in comparison to standard polyethylene-study protocol for a randomized controlled trial.

Background: The gliding surface of total knee endoprostheses is exposed to high loads due to patient weight and activity. These implant components are typically manufactured from ultra-high molecular weight polyethylene (UHMWPE). Crosslinking of UHMWPE by ionizing radiation results in higher wear resistance but induces the formation of free radicals which impair mechanical properties after contact with oxygen.

Should trochanteric fractures in elderly patients be treated by arthroplasty or internal fixation?

Most trochanteric fractures are treated by fixation, most often intramedullary. Nevertheless, the desire to have patients walk as soon as possible and the fear of fixation failure has driven some surgeons to carry out an arthroplasty instead, especially for unstable fractures and/or in patients with severe osteoporosis, in order to avoid the difficult conversion to arthroplasty later on if the fixation fails. The aim of this review was to specify the role, technique and results of performing arthroplasty in this context.

Functional and MRI results after a 7.5 year follow-up of 35 single-stage ACL and PCL reconstructions using gracilis and semitendinosus tendon grafts and LARS artificial ligaments.

Purpose: The aim of this study was to evaluate the long-term functional and MRI results of 35 patients who underwent bicruciate ligament reconstruction combining an ACL autograft using the gracilis and semitendinosus tendons and double-bundle PCL reconstruction using the LARS artificial ligament.

Methods: The outcomes were measured using the Lysholm score, the Tegner activity level scale and the International Knee Documentation Committee form (IKDC 2000). KT-1000 was used to assess the clinical anterior knee laxity.

Posterior tibial slope (PTS) ≥ 10 degrees is a risk factor for further anterior cruciate ligament (ACL) injury; BMI is not.

Purpose: This case-control study aimed to assess the influence of BMI and PTS on subsequent ACL injury affecting either ACL graft or the native ACL of the contralateral knee after primary ACL reconstruction.

Methods: A retrospective case-control study was performed using a cohort of patients who underwent arthroscopic ACL reconstruction between 2010 and 2020 using the same surgical procedure: Hamstring tendon autograft. The study group (group I) included all the patients (n = 94) during this period who sustained a subsequent ACL injury.

Subtalar arthrodesis using a single compression screw: a comparison of results between anterograde and retrograde screwing.

Introduction: The primary objective of this study was to compare the radiological and clinical results of anterograde and retrograde screwing in subtalar arthrodesis using a single compression screw. The secondary objective was to evaluate the subjective results and consolidation of this procedure. The hypotheses were that isolated screw fixation was sufficient to achieve good consolidation and that there was no difference between the two techniques with a similar rate of bone fusion.

Comparison of knee extensor strength after anterior cruciate ligament reconstruction using either quadriceps tendon or hamstring tendon autografts.

Purpose: The aim was to assess the consequences of quadriceps tendon (QT) harvest on knee extensor strength after anterior cruciate ligament reconstruction (ACL-R) compared to hamstring tendon (HT) autograft. Secondary objectives were to evaluate flexor strength recovery and search for correlation between strength status and functional outcome.

Methods: This a retrospective cohort of 44 patients who underwent ACL-R using either QT (25) or HT (19).

Assessment of morbidity and mortality after periprosthetic hip fracture. Influence of Vancouver stage in a retrospective single-centre study of 88 patients.

Background: Peri-prosthetic hip fractures (PPHFs) are serious complications whose treatment is generally difficult due to their predominance in elderly patients with bone frailty and other comorbidities. The Vancouver classification is the most widely used and is helpful for assisting treatment decisions. However, its value for predicting morbidity and mortality has not been assessed.

Complications and failures of non-tumoral hinged total knee arthroplasty in primary and aseptic revision surgery: A review of 290 cases.

Introduction: Hinged total knee arthroplasty (TKA) implants are a commonly used option during revision or even primary surgery, but their complications are not as well known, due to the rapid adoption of gliding implants. The literature is inconsistent on this topic, with studies having a small sample size, varied follow-up duration and very different indications. This led us to carry out a large multicentre study with a minimum follow-up of 5 years to evaluate the complications after hinged TKA in a non-tumoral context based on the indications of primary arthroplasty, aseptic surgical revision or fracture treatment around the knee.

Are Schatzker and AO classifications accurate enough to classify tibial plateau fractures in alpine skiers?

Purpose: The aims of this study were (1) to collect prospectively all tibial plateau fractures admitted to our department, over two ski seasons, and to classify them according to the Schatzker and AO classifications; (2) to assess if these classifications are accurate enough to include all types of fractures; and (3) to compare theses fractures with the series found in the literature, which included very few or no skiing accidents.

Methods: During the 2016-2017 and 2017-2018 ski seasons, we prospectively included 116 tibial plateau fractures caused by downhill skiing accidents. All patients underwent standard X-rays and 2D and 3D CT scans.

Rotating-hinge prosthesis for aseptic revision knee arthroplasty: A multicentre retrospective study of 127 cases with a mean follow-up of five years.

Background: The use of third-generation rotating-hinge knee prostheses has increased considerably in recent years. The more anatomical design of these prostheses, together with their controlled rotation system that reduces constraints generated by the single degree of liberty, have produced better outcomes. The objective of this study was to evaluate the clinical and radiological outcomes of revision knee arthroplasty for aseptic failure using rotating-hinge prostheses.

Is virtual reality effective to teach prevention of surgical site infections in the operating room? study protocol for a randomised controlled multicentre trial entitled VIP Room study.

Introduction: Some surgical site infections (SSI) could be prevented by following adequate infection prevention and control (IPC) measures. Poor compliance with IPC measures often occurs due to knowledge gaps and insufficient education of healthcare professionals. The education and training of SSI preventive measures does not usually take place in the operating room (OR), due to safety, and organisational and logistic issues.

Posterior cruciate ligament reconstruction for chronic lesions: clinical experience with hamstring versus ligament advanced reinforcement system as graft.

Purpose: The aim of this study was to compare clinical and laximetric results in chronic, isolated posterior cruciate ligament (PCL) rupture repairs, using either a hamstring graft or an artificial ligament (ligament advanced reinforcement system (LARS®)).

Methods: Sixteen patients presenting with an isolated unilateral PCL rupture were included in this retrospective study. Initially, eight underwent a PCL reconstruction using a hamstring tendon autograft (hamstring group), and over a later period, eight further patients underwent a reconstruction using an artificial ligament with a new procedure.

Screw-plate fixation for displaced middle-third clavicular fractures with three or more fragments: A report of 172 cases.

Background: Although mid-shaft clavicular fractures are generally thought to be non-serious injuries that nearly always heal with non-operative treatment, recent studies found non-union rates of 3%-7% in simple fractures and 20%-33% in complex fractures. The primary objective of this study was to report the functional and anatomical outcomes after screw-plate fixation of displaced mid-shaft clavicular fractures with three or more fragments.

Hypothesis: Screw-plate fixation in this indication is an excellent treatment option that minimises the risk of complications.

Intra- and extra-articular proximal tibia malunion.

Extra- and intra-articular proximal tibia malunion is not uncommon. Functional impact is variable but may lead to almost total impotence. The present study aimed to provide a review on malunion, answering 5 questions: (1) How should malunion be classified, and with what pathogenicity? Malunion results from reduction defect and/or secondary displacement in tibial plateau fracture (A2, A3, B, C on the AO classification), but also from previous epiphysiodesis or osteotomy (valgization or varization).

Independent clinical appraisal of the Tape Locking Screw (TLS) anterior cruciate ligament reconstruction technique compared with the hamstring graft technique with a minimum of 12-month follow-up.

Introduction: The aim of this study was to assess the differential laxity after reconstruction of the anterior cruciate ligament (ACL) by the TLS technique using a single tendon, the semitendinosus in four-strand graft, compared with the hamstring technique which uses both the gracilis and semitendinosus. We hypothesised that this surgical technique would provide post-surgical differential laxity measurements at least as good as those of the hamstring technique.

Materials And Methods: We carried out a prospective monocentric study on patients undergoing unilateral anterior cruciate ligament repair between December 2014 and June 2016.

Influence of the post-operative axis on the clinical results of total knee replacement for severe varus deformities: does a slight residual varus improve the results?

Purpose: Some recent articles have suggested that in the case of large varus deformity, it may be advantageous to leave some residual post-operative varus as a means of improving functional outcome. The objective of this study is to compare the results of total knee replacement (TKR) performed for significant varus deformity (HKA < 170°) where there is a residual post-operative varus (HKA < 180°) to the results of TKR for significant varus deformity with either neutral post-operative (HKA = 180°) or mild valgus post-operative alignment (HKA > 180°).

Methods: This series was made up of 208 knees.

Anterior cruciate ligament reconstruction with the Tape Locking Screw (TLS) and a short hamstring graft: Clinical evaluation of 61 cases with a minimum 12 months' follow-up.

Introduction: The Tape Locking Screw (TLS technique for anterior cruciate ligament (ACL) reconstruction has the advantages of using only one hamstring tendon (semitendinosus) by preparing a short graft secured with screws and braided strips. The theoretical pitfall of this technique is that the graft length is determined arbitrarily. Thus, if the blind tunnels are not long enough, it will be impossible to tension the graft properly upon fixation.

Navigation for lower limb alignment during internal fixation of complex tibial-plateau fractures.

In complex fractures of the proximal tibial metaphysis and epiphysis, possible adverse outcomes after internal fixation include not only joint surface incongruity, but also lower limb malalignment requiring revision surgery. Navigation has been proven effective for the intraoperative control of lower limb alignment during osteotomy and knee arthroplasty. In complex traumatic fractures, temporary fixation by a locking screw plate allows sensor positioning followed by navigation maneuvers to adjust lower limb alignment.

Total knee arthroplasties from the origin to navigation: history, rationale, indications.

Since the early 1970s, total knee arthroplasties have undergone many changes in both their design and their surgical instrumentation. It soon became apparent that to improve prosthesis durability, it was essential to have instruments which allowed them to be fitted reliably and consistently. Despite increasingly sophisticated surgical techniques, preoperative objectives were only met in 75% of cases, which led to the development, in the early 1990s, in Grenoble (France), of computer-assisted orthopaedic surgery for knee prosthesis implantation.

Results with nine years mean follow up on one hundred and three KAPS® uni knee arthroplasties: eighty six medial and seventeen lateral.

Purpose: The purpose of this study was to present the results of the KAPS® uni knee arthroplasty system, both mobile and fixed bearing with reference to function, alignment and complications in 103 implants with a mean follow-up of nine years.

Methods: This was a retrospective study of 103 unicompartimental knee arthroplasties in 89 patients operated on between March 2005 and March 2010. The population was composed of 50 males and 39 females, with a mean age of 70.

Results with eight and a half years average follow-up on two hundred and eight e-Motion FP® knee prostheses, fitted using computer navigation for knee osteoarthritis in patients with over ten degrees genu varum.

Purpose: The aim of this study was to analyse the clinical and radiographic results of 208 e-Motion® posterior cruciate-retaining, mobile bearing prostheses (BBraun-Aesculap, Tuttlingen, Germany) fitted using computer navigation, for knee osteoarthritis with a genu varum greater than 10°.

Methods: One hundred ninety-two patients were operated on with 208 e-Motion® prostheses fitted, between January 2006 and December 2011, using the OrthoPilot® computer navigation system. Average pre-operative IKS score was 70 ± 27 points (6-143) with a function score of 38 ± 20.

Ganglion cysts of the proximal tibiofibular articulation: the role of arthrodesis and combined partial fibula excision.

Purpose: Cysts of the proximal tibiofibular articulation are rare and their optimal treatment remains unclear. The objective of this study was to evaluate the results and complications of the treatment of synovial ganglion cysts of the proximal tibiofibular articulation by simple excision or by excision and fusion of the proximal tibiofibular joint with a limited fibula excision.

Methods: Between January 2005 and December 2016, seven male patients with an average age of 46 years were treated for a ganglion cyst of the proximal tibiofibular articulation.