Correction to: No difference in outcomes and gait analysis between mechanical and kinematic knee alignment methods using robotic total knee arthroplasty.

The authors wish to acknowledge a confusion in alignment definition in the published paper.

No difference in outcomes and gait analysis between mechanical and kinematic knee alignment methods using robotic total knee arthroplasty.

Purpose: The purpose of this study was to compare clinical outcomes and perform gait analysis during walking to identify differences in kinematic and kinetic parameters between two alignment methods in robotic-assisted total knee arthroplasty (TKA).

Methods: Sixty patients were randomly assigned to undergo robotic-assisted TKA using either mechanical (30 patients) or kinematic (30 patients) alignment method. Clinical outcomes including varus and valgus laxities, range of motion (ROM), Hospital for Specific Surgery (HSS), Knee Society Score (KSS), and Western Ontario and McMaster Universities (WOMAC) scores and radiological outcomes were evaluated.

Diaphyseal Nonunion in Children.

Objectives: To delineate the contributing factors of diaphyseal fracture nonunion in children and to determine suggested treatment based on the cohort examined.

Design: Retrospective review.

Patients: 16 children who underwent operative treatment for diaphyseal nonunion from January 1995 to December 2009.

Comparison of two surgical approaches for displaced intra-articular calcaneal fractures: sinus tarsi versus extensile lateral approach.

Background: Two common surgical approaches included the sinus tarsi and extensile lateral are used for displaced intra-articular calcaneal fractures. However, few studies have compared outcome of treated by the two approaches. The purpose of this study was to compare the outcome between these two approaches for Sanders type-II and type-III fractures.

Eosinophilic granuloma involving the femoral neck.

We present a very rare case of eosinophilic granuloma involving the neck of femur in a 17-year-old male. The patient was treated with curettage and autologous iliac crest bone grafting with prophylactic screw fixation, and the diagnosis was confirmed by histopathological examination. Currently, it has been 14 years since the first surgery and the patient is well with no recurrence or relapse, and the osteolytic lesion has disappeared.