1 Takashi Nuri, MD, PhD Koichi Ueda, MD, PhD Masashi Okada, MD, PhD Yuki Otsuki, MD Hiroyuki Iwanaga, MD Department of Plastic and Reconstructive Surgery Osaka Medical College Takatsuki, Osaka, Japan Sir, A lthough the osteocutaneous free flap is the best choice for mandibular reconstruction, it cannot be chosen sometimes because of the patient’s condition. Then, a metal reconstruction plate is...

BACKGROUND In the last fifty years since plate and screw osteosynthesis has been implemented in fracture treatment, osteosporotic bone fractures were observed as a special problem. Due to special histologic, anatomic, physical and biomehanic properties of osteoporotic changed bone the laws of biomechanics suggest that stable osteosynthesis for osteoporotic bone is necessary to increase the cont...

BACKGROUND: Ludloff osteotomy fixation with compression screws has been widely used in the treatment of Hallux Valgus deformities [1, 2]. Generally six weeks of non-weight-bearing is required postoperatively to allow bone union. Besides the significant inconvenience due to non-weight-bearing, noncompliance may induce malunion, nonunion and loss of correction, indicating screw fixation is not st...

The ALPS (Advanced Locking Plate System) fracture fixation system is a novel internal fracture fixation device designed and produced by Kyon Veterinary Surgical Products of Switzerland. Compared to conventional internal fixation systems the ALPS system is designed to reduce the rate of surgical infection, improve the rate of fracture healing, and improve surgical application versatility. All AL...

ABSTRACT BACKGROUND Minimally invasive internal fixation is also called "biological internal fixation". This concept is used widely in the treatment of various fractures but to date, there have been no report about such application in the repair of isolated ulnar bone fractures. METHODS Eleven patients with fracture of isolated ulnar bone (four AO type 22A11 and seven AO type 22A12), mean ...

A numerical model of the medial open wedge tibial osteotomy based on the finite element method was developed. Two plate positions were tested numerically. In a configuration, (a), the plate was fixed in a medial position and (b) in an anteromedial position. The simulation took into account soft tissues preload, muscular tonus and maximal gait load.The maximal stresses observed in the four struc...

Fig. 1. X-ray of left forearm and hand showing osteosclerosis, ‘bone in bone’ appearance of shaft, fracture both bones, fraying and early cupping of metaphysis and widening of ‘physis’, the growth plate and absence of carpal bones. pathological fractures with ‘bone in bone’ appearance, increase in medullary density, defective metaphyseal remodeling with fraying and early cupping and widening of...

Longitudinal bone growth occurs at the growth plate by endochondral ossification. Within the growth plate, chondrocyte proliferation, hypertrophy, and cartilage matrix secretion result in chondrogenesis. The newly formed cartilage is invaded by blood vessels and bone cells that remodel the newly formed cartilage into bone tissue. This process of longitudinal bone growth is governed by a complex...

M ucogingival surgical procedures require the dentist to have a precise knowledge of both normal and unusua1 anatomic features of the aIveolar process. Fenestrations (Fig. 1) and dehiscences (Fig. 2) of the alveolar plate of bone are often detected only when mucogingival surgical procedures are performed. Such bony defects are probably the result of a slow, progressive absorption of an already ...

Chondrocyte differentiation during embryonic bone growth is controlled by interactions between PTHrP and Indian hedgehog. We have now determined that the major components of this signaling pathway are present in the postembryonic growth plate. PTHrP was immunolocalized throughout the growth plate, and semiquantitative RT-PCR analysis of maturationally distinct chondrocyte fractions indicated th...