Clinical and radiographic outcomes of an accelerometer-based system for the tibial resection in total knee arthroplasty.

Purpose: The accelerometer-based system is a portable surgical navigation system for TKA that does not require the use of a large computer console for registration and alignment feedback as required in computer-assisted surgery (CAS). The purpose of this prospective study was to determine the accuracy of the accelerometer-based system in the tibial component positioning and also to evaluate clinical outcomes.

Methods: Between December 2011 and July 2012, a total of 53 consecutive patients with primary gonarthrosis were prospectively enrolled for unilateral TKA using a handheld surgical navigation system to perform the tibial resection.

ACL reconstruction with hamstrings: how different technique and fixation devices influence bone tunnel enlargement.

Background: Bone tunnel enlargement after anterior cruciate ligament (ACL) reconstruction is well documented in the literature. The cause of this tunnel enlargement is unclear, but is thought to be multifactorial, with mechanical and biological factors playing a role.

Aim: The aim of this prospective study was to evaluate how the different techniques may affect the bone tunnel enlargement and clinical outcome.

Nanohydroxyapatite-based bone graft substitute in tunnel enlargement after ACL surgery: RMN study.

Background And Aim: A successful anterior cruciate ligament reconstruction (ACL) requires solid healing of the tendon graft in the bone tunnel. New biological strategies have already been proposed with the aim of improving ACL graft healing and therefore allowing a faster rehabilitative program. The aim of this prospective study was to clinically and radiologically evaluate the efficacy of nanohydroxyapatite bone-base grafts in facilitating bone-tendon incorporation after ACL reconstruction with hamstrings (HS).

Computer-assisted surgery: a teacher of TKAs.

Introduction: The hypothesis of this study is that computer-aided navigation experience could improve the ability to better place components in the coronal plane and to improve visual/spatial awareness based on the ability of navigation to provide instant feedback. The purpose of this study is to demonstrate the educational role of the navigation system to obtain a better alignment of the prosthetic components with standard instrumentation after a computer-aided navigation experience.

Materials And Methods: One hundred fifty patients were operated by the same surgeon, with more than 5 years experience with TKA.

Evaluation of the accuracy of a patient-specific instrumentation by navigation.

Purpose: The aim of this study is to evaluate the accuracy of a patient-specific instrumentation (PSI) as assessed by the intraoperative use of knee navigation software during the surgical procedure.

Methods: Fifteen patients with primary gonarthrosis were selected for unilateral total knee arthroplasty. The first three patients were excluded from this study, as they were considered to be a warm up to set-up the procedure.