INTRODUCTION Failed treatment for avulsion fracture of the tibial attachment of the anterior cruciate ligament (ACL) leads to anterior knee instability when the avulsion fragment is displaced. Anatomical reduction and fixation of the fragment are widely recommended for type III and IV displaced fracture. Although several surgical techniques for arthroscopic reduction and internal fixation (ARIF...

In this paper 3D motion estimation using an active stereo vision paradigm is addressed. The objective is to measure camera rotations of a stereo head to estimate the 3D motion of a single moving object in a scene. The method uses stereo camera fixation of junctions. The vertex of a junction is selected as the fixation point. Vertex position and junction orientations are recovered in the fixated...

BACKGROUND The purpose of this biomechanical in vitro study was to compare the kinematics and intradiscal pressure achieved with 2 methods: L4-L5 pedicle screw-rod fixation (PSRF) with an upper L3-L4 Coflex device and L4-L5 PSRF alone. The results were used to characterize the biomechanics of the topping-off operation with a Coflex device for the lumbar motion segment adjacent to single-level r...

Distal radius fractures, the most common long bone fracture, are treated in several ways, including closed reduction, percutaneous pinning, external fixation, and open reduction and internal fixation. This article presents a surgical technique and a series of patients treated with a novel minimally invasive intramedullary fixation technique. The implant is a partially flexible intramedullary ro...

Seventeen patients with unstable C1-2 injuries were treated between 1990 and 1997. Various methods of instrumentation surgery were performed in 16 patients, excluding a case of atlantoaxial rotatory fixation. Posterior stabilization was carried out in 14 cases using Halifax interlaminar clamp, Sof'wire or Danek cable, or more recently, transarticular screws. Transodontoid anterior screw fixatio...

UNLABELLED SUBAXIAL CERVICAL FACET DISLOCATION INJURIES: STANDARDS There is insufficient evidence to recommend treatment standards. GUIDELINES There is insufficient evidence to recommend treatment guidelines. OPTIONS Closed or open reduction of subaxial cervical facet dislocation injuries is recommended. Treatment of subaxial cervical facet dislocation injuries with rigid external immobil...

Stability of bilateral sagittal split osteotomy (BSSO) is an important goal for every surgeon. In the article factors influencing stability of the surgery result are reviewed. Special emphasis is given to different types of fixation of bone fragments. Their advantages and disadvantages in clinical use are discussed. Relapse after BSSO is usually classified as early and long-term relapse. Early ...

Management of intra-articular calcaneal fractures during the past years has ranged from the nihilistic approach of no active treatment to open reduction and internal fixation or even to early subtalar arthrodesis. Operative treatment presents the surgeon with many challenges. Good results require atraumatic exposure, anatomic reduction, rigid fixation and early mobilization. We describe the use...