Smoking is not closely related to revision for periprosthetic joint infection after primary total knee and hip arthroplasty.

Background: The influence of smoking on the risk of periprosthetic joint infection (PJI) remains unclear. The objective was to explore the impact of smoking on PJI after primary total knee (TKA) and hip (THA) arthroplasty.

Hypothesis: Current smoking patients should have an increased risk of PIJ compared with nonsmoking patients.

Functional Outcome Change Over 10 Years After Primary Total Knee Arthroplasty. A Prospective Longitudinal Cohort Study.

Background: To assess any clinically important difference in functional outcome over 10 years after primary total knee arthroplasty (TKA).

Methods: A prospective registry-based observational cohort study including 309 patients older than 60 years who underwent primary TKA. Patients were assessed at 1, 3, 5, 7 and 10 postoperative years with the Knee Society scores (KSS) and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC).

No influence of posterior tibial slope change on outcomes after cruciate-retaining total knee arthroplasty: a prospective cohort study.

Objective: To investigate whether the functional outcomes were affected by the change in posterior tibial slope (PTS) after using a predetermined PTS for primary cruciate-retaining total knee arthroplasty (CR-TKA).

Methods: Prospective cohort study of 152 patients who underwent primary CR-TKA with a standardized PTS of 5º regardless of the native PTS. Patients were classified postoperatively in two ways.

Negative Association of Subclinical Hypothyroidism on Improvement in Patient-Reported Outcomes After Total Knee Arthroplasty.

Background: The purpose of this study is to analyze the potential influence of subclinical hypothyroidism (SCH) on improvement in patient-reported outcome measures following primary total knee arthroplasty.

Methods: A prospective, comparative cohort study between 92 SCH and 90 euthyroid patients was performed. Patients were followed up to 5 postoperative years.

A validated outcome categorization of the knee society score for total knee arthroplasty.

Purpose: To determine cutoff values for the Knee Society Scores (KSS) indicative of a categorical scale of medium-term outcomes.

Methods: One hundred and fifty-five patients who underwent primary cruciate-retaining TKA with a patellar button for osteoarthritis at a single-centre were assessed prospectively by the KSS and short-form Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) simultaneously at the 3-year follow-up. A validated categorization of the WOMAC score was used as a standard.

Tibiotalocalcaneal arthrodesis with a retrograde intramedullary nail: a prospective cohort study at a minimum five year follow-up.

Purpose: To evaluate prospectively the functional outcomes of tibiotalocalcaneal (TTC) arthrodesis with a contemporary retrograde intramedullary nail after a minimum follow-up of five years.

Methods: Sixty-one patients with a mean age of 51.3 (range, 18-79) years were included in the study.

Altered seric levels of albumin, sodium and parathyroid hormone may predict early mortality following hip fracture surgery in elderly.

Purpose: To analyse a wide set of routine laboratory parameters at admission to predict mortality within 30 post-operative days in elderly patients with hip fracture, as well as calculate the critical values of those biomarkers.

Method: Data of 994 patients older than 65 years with hip fracture were analysed of which 89 (8.2%) died within 30 post-operative days.

Reasons for delaying surgery following hip fractures and its impact on one year mortality.

Purpose: The purposes of this study were to identify the reasons for delayed surgery following hip fractures and analyze the impact of these reasons on 1-year mortality.

Methods: A prospective cohort study of 1234 patients with mean age of 83.1 (range 65-92, SD 8.

Cruciate-Retaining vs Posterior-Stabilized Primary Total Arthroplasty. Clinical Outcome Comparison With a Minimum Follow-Up of 10 Years.

Background: Controversy continues regarding whether the posterior cruciate ligament should be retained or removed during total knee arthroplasty (TKA) procedure. The objective was to compare the clinical outcomes with a minimum follow-up of 10 years between patients who received contemporary cruciate-retaining or posterior-stabilized primary TKA.

Methods: Case-control study of 268 patients who underwent cruciate-retaining TKA vs 211 to posterior-stabilized design, with the same arthroplasty system, and a minimum follow-up of 10 years.

Better functional outcome after single-radius TKA compared with multi-radius TKA.

Purpose: To determine whether the design of the femoral component influenced patient outcomes.

Methods: Two hundred and thirty-seven patients were randomized to compare functional outcomes between single-radius TKA (SR, 118 patients) and multi-radius TKA (MR, 119 patients) with a minimum follow-up of 5 years. Prospective pre- and postoperative assessments were performed by the clinical and radiological criteria of the Knee Society Score (KSS), WOMAC and Short-Form 12 (SF12) questionnaires.