An Experimental Model on the Biomechanical Behaviour of the Flexor Tendons in New Zealand Rabbits.

Background: In order to introduce new pharmacological agents with the intent to inhibit the adhesion formation, it is important to test such products on laboratory animals under a protocol that can evaluate the quantitative and qualitative aspects of healing of the tendons. Most experimental models focus on the tensile strength and histological analysis of the tendons, failing to sufficiently quantify the degree of the adhesion formation.

Methods: The experiment included six male New Zealand rabbits that underwent surgery of their right forepaws.

A novel surgical tool for the revision hip arthroplasty due to neck stem's fracture.

During revision surgery of total hip arthroplasties, surgeons may come across the challenging complication of a proximally fractured femoral stem, which however maintains sufficient distal fixation. Such cases, although rare, are extremely demanding due to lack of available attachments that would assist surgical explantation of the broken implant. It is herein presented a metal sterilisable surgical tool designed for the removal of the femoral stem broken at the level of the "neck".

Numerical simulation of bone screw induced pretension: the cases of under-tapping and conical profile.

Even though screw induced pretension impacts the holding strength of bone screws, its implementation into the numerical simulation of the pullout phenomenon remains a problem with no apparent solution. The present study aims at developing a new methodology to simulate screw induced pretension for the cases of: (a) cylindrical screws inserted with under-tapping and (b) conical screws. For this purpose pullout was studied experimentally using synthetic bone and then simulated numerically.

A novel liver parenchyma transection technique using locking straight rigid ties. An experimental study in pigs.

Introduction: Technological advances have led to the development of many devices used in liver resections. However, no single transection tool is uniformly considered to be better than the others. This study aimed to develop an effective, fast, and cost-efficient technique for hepatic parenchymal transection.

Rotator cuff repair: a biomechanical ex vivo ovine study.

The purpose of this study was to assess load to failure of sutures, suturing techniques, and suture anchors used in rotator cuff surgery in order to explore their weaknesses. Ten types of sutures (absorbable and nonabsorbable), four types of suturing techniques, and eight types of suture anchors (bioabsorbable and metallic) were tested. Material Testing Machine and attached load cell were used to test the biomaterials in ex vivo ovine tissues.