STUDY DESIGN Prospective, randomized, controlled study. OBJECTIVE To report the results of using the PediGuard (SpineGuard, Inc., San Francisco, CA), a local electrical conductivity measurement device, to reduce radiation exposure while drilling the pilot hole for pedicle screw placement. SUMMARY OF BACKGROUND DATA Reports of pedicle screw placement in the lumbar spine have shown medial ped...

Miniscrew implants have proven to be effective in providing absolute orthodontic anchorage. However, as self-drilling miniscrew implants have become more popular, a problem has emerged, i.e. root contact, which can lead to perforation and other root injuries. To avoid possible root damage, a surgical guide was fabricated and cone-beam computed tomography (CBCT) was used to incorporate guide tub...

A century ago, in 1909, Martin Kirschner (1879-1942) introduced a smooth pin, presently known as the Kirschner wire (K-wire). The K-wire was initially used for skeletal traction and is now currently used for many different goals. The development of the K-wire and its insertion devices were mainly influenced by the change in operative goals and by the introduction of antibiotics. The first versi...

Osteochondritis dissecans is a condition primarily found in the knee, elbow, and ankle, which affects subchondral bone and potentially the overlying articular cartilage. Although the etiology is not certain, possible causative factors include repetitive microtrauma, ischemia, genetic and endocrine factors, and anomalies of ossification. The etiology, presentation, and management is age-dependen...

background. improving the implantation conditions in order to reduce the failure is always desirable for researchers. the aim of this study was to compare two different types of dental implant materials from biomechnical viewpoint in order to introduce a novel simulation method to select suitable materials for dental implants. methods. in this research, drilling process was performed in the cor...

A new arthroscopic approach for traumatic instability has been developed with which avulsed capsulolabral tissue can be effectively attached to the glenoid articular rim with sutures, providing anatomic reattachment and effective deepening of the glenoid concavity similar to that achieved by open repair. This technique does not depend on fixation devices, trans-scapular drilling, or implantatio...

Intramedullary nailing is a technically demanding procedure which involves an excessive amount of x-ray acquisitions; one study lists as many as 48 to successfully complete the procedure. In this work, a novel low cost radiation-free drilling guide is designed to assist surgeons in completing the distal locking procedure without any x-ray acquisitions. Using an augmented reality fluoroscope tha...

BACKGROUND Osteochondrosis dissecans is a disorder of the subchondral bone potentially affecting the adjacent articular cartilage. There remains disunity with regard to treatment methods. CASE PRESENTATION We present the case of a 21-year-old Swiss woman who presented with clinically symptomatic bilateral osteochondrosis dissecans lesions at both medial femoral condyles. She underwent sequent...

This paper presents a new robot-based system to assist orthopaedic surgeons in performing distal intramedullary locking in femoral and tibial fracture reduction. The system consists of a miniature bone-mounted robot fitted with a drill guide that provides mechanical guidance for manual drilling of the distal screws’ pilot holes. The drill guide and the nail’s distal locking holes axes are autom...

INTRODUCTION Osteopetrosis introduces technical limitations to the traditional treatment of fracture management that may be minimised with specific pre-operative planning. Extreme care and caution are required when drilling, reaming, or inserting implants in patients with osteopetrosis. Caution must be exercised throughout the postoperative course when these patients are at greatest risk for de...