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At least 91 records · Page 5Linked to original sources
PubMed1986

A sixteen-year evaluation of the mandibular staple bone plate.

A retrospective study was done of 1,516 patients who had a mandibular staple bone plate operation for jaw reconstruction during the period from 1968 to 1984. The results indicated that 91.75% of the staples were functioning well without major complications, 2.70% were functioning well following repair or replacement, 1.98% were functioning moderately well after unloading (overdenture relief due to mobility), and 3.57% had been removed. The cumulative rate of success was 94.64% for five to six years and 90.89% for ten to 16 years.

Adolescent↗
PubMed1997

Relative displacement resistance of standard and low-profile bone plates in experimental mandibular angle fractures.

OBJECTIVE: The purpose of the study was to compare the resistance to displacement of low-profile and standard titanium bone plate with an experimental mandibular angle fracture model. STUDY DESIGN: A jig was used to produce standard horizontally and vertically unfavorable mandibular angle fractures in 24 healthy baboon hemimandibles. Each hemimandible was immobilized with either a standard or a low-profile titanium bone plate with a Champy unicortical technique. The resistance to displacement was measured in a tensile-testing machine, and results were analyzed with a three-way analysis of variance. RESULTS: Mean (SD) forces required to displace the fractures were standard plate 68.7 (22.8) kg and low-profile plate 46.5 (24.6) kg. CONCLUSIONS: The standard plates provided significantly more resistance to displacement, and 75% of the low-profile plates fractured through a screwhole.

Animals↗
PubMed1987

Use of a bone plate for treatment of middle phalangeal fractures in horses: seven cases (1979-1984).

Four adult horses and 3 foals with middle phalangeal fractures were treated by arthrodesis of the proximal interphalangeal joint, using a bone plate. Six of the 7 horses survived greater than 2 years; 2 of the 6 horses had intermittent lameness after hard work, and 4 horses didn't have evidence of lameness. The use of a bone plate for arthrodesis of the proximal interphalangeal joint was a successful treatment alternative for middle phalangeal fractures in horses.

Animals↗
PubMedDate not supplied

Arthroscopic subchondral bone plate microfracture technique augments healing of large chondral defects in the radial carpal bone and medial femoral condyle of horses.

OBJECTIVE: To evaluate the effect of arthroscopic subchondral bone microfracture on healing of large chondral defects in horses. STUDY DESIGN: Short- (4 months) and long-term (12 months) in vivo experimental chondral defect model. ANIMALS: 10 horses, aged 2 to 5 years. METHODS: Each horse had a 1 cm2 full-thickness chondral defect created in both radial carpal bones and both medial femoral condyles. One carpus and one femoral condyle of each horse had the subchondral bone plate under the defect perforated using an orthopedic awl. All horses were exercised, five horses were evaluated after 4 months and five horses after 12 months. Gross, histologic, and histomorphometric examination of defect sites and repair tissues was performed, as was collagen typing of the repair tissue. RESULTS: On gross observation a greater volume of repair tissue filled treated defects (74%) compared with control defects (45%). Histomorphometry confirmed more repair tissue filling treated defects, but no difference in the relative amounts of different tissue types was observed. There was an increased percentage of type II collagen in treated defects compared with control defects and evidence of earlier bone remodeling as documented by changes in porosity. CONCLUSIONS: In full-thickness chondral defects in exercised horses, treatment with subchondral bone microfracture increased the tissue volume in the defects and the percentage of type II collagen in the tissue filling the defects when compared to nontreated defects. CLINICAL RELEVANCE: No negative effects of the microfracture technique were observed and some of the beneficial effects are the basis for recommending its use in patients cases with exposed subchondral bone.

Animals↗
PubMed1985

A technical note on placement of the mandibular staple bone plate.

The technical modifications suggested for placement of the mandibular staple bone plate include the positioning of the acrylic template at the onset of the procedure and the insertion of an excess amount of Steri-drape intraorally at the time the patient is draped. The assistant can then manipulate the acrylic template and director rods from a sterile field. The perception of when the drill bit has completely traversed the alveolar bone is improved by relieving the acrylic template at the site at which the transosteal pins penetrate into the oral cavity. The advantages of these modifications are three-fold: the entire surgical team remains sterile, the risk of contaminating the surgical field is reduced, and the procedure is rendered more time-efficient.

Bone Plates↗
PubMed1986

The mandibular staple bone plate. Its use and advantages in reconstructive surgery.

The mandibular staple bone plate is a reconstructive device that will attach to the inferior border of the mandible and will orthopedically provide for prosthetic and jaw stabilization in the edentulous mandible and the deformed mandible. It can be useful in a variety of clinical settings and is adaptable to a number of prosthetic needs. It is cost-effective and has demonstrated osteointegration in over 91 per cent of cases. The cumulative rate of success for 5 to 6 years is 94.6 per cent.

Biocompatible Materials↗
PubMed1992

Osseointegrated Brånemark implants used to retreat a fractured mandibular bone plate staple implant: a case report.

This article describes postimplant follow-up and retreatment of a 66-year-old patient with an esthetically compromising fixed maxillary tissue-integrated prosthesis and a mobile mandibular overdenture stabilized by precision attachments with a gold clip bar cemented to the transmucosal posts of a bone plate staple implant. Following successful completion of prosthodontic treatment, the patient returned with a fracture of the left transmucosal pin in the mandibular bone plate staple implant that was retreated with Brånemark implants and a fixed prosthesis.

Aged↗
PubMed1986

Prosthodontic reconstruction with the mandibular staple bone plate.

The atrophic edentulous mandible is treated successfully with a mandibular staple bone plate. The lower denture must be tissue-borne with retention and stability provided by the implant. An attachment with stress-breaking capability is necessary for the success of the reconstruction.

Adolescent↗
PubMed1989

Reduction of stress shielding beneath a bone plate by use of a polymeric underplate. An experimental study in dogs.

Plating of fractures results in osteopenia beneath the plate because of the stress-shielding effect. This study was performed to determine if a dynamic compression plate fixed to a bone with a low-density polyethylene underplate would loosen over time and with cyclic loading (due to creep and/or accumulated plastic deformation of the underplate) and thus decrease its stress shielding of the bone. Three groups of ten canine femora each were plated and tested in vitro. A nonosteotomized control group (without an underplate) and an experimental group (with an underplate) were cyclically loaded 10(6) times in compression under identical conditions. The third group of bones was osteotomized and plated with underplates and cyclically loaded 10(5) times to ensure that the construct would not fail before early fracture union could occur. The plate screws of the experimental group were significantly looser than those in the control group. This corresponded to a decrease in the underplate thickness that was more than sufficient to account for the looseness of the screws. Strain readings from the plate and bone were highly variable and not conclusive. Therefore, a transfer of load, reflected in the strain magnitude, from the plate to the bone during loosening of the screws could not be documented. None of the osteotomized bones in the third group had fixation failure. This experiment demonstrated that this plate-underplate construct provided strong initial fixation of an osteotomized bone in the laboratory setting without failure of fixation. This construct gradually loosened with time and cyclic loading in vitro and therefore should decrease the stress-shielding effect when applied in vivo.

Animals↗
PubMed1983

Clinical evaluation of the mandibular staple bone plate.

Some of the problems in the use of the mandibular staple bone plate are improper placement of the implant labiolingually, gingival reaction around the pins, and compression loading of the implant. The use of the patient's denture to determine proper angulation and the preparation of the transosteal posts can eliminate improper placement. Mucogingival grafting can be used to treat the inflammatory gingival reaction around the posts, and compression loading can be controlled by proper recognition during processing, placement, and patient education.

Bone Nails↗
PubMed2003

Treatment of tibial pilon fractures using the Link May Anatomic Bone Plate.

BACKGROUND: The tibial pilon fracture is a relatively uncommon but a most difficult fracture to manage. Most orthopedic surgeons agree that the goal of treating such kind of fracture should be anatomic restoration of the articular surface, rigid and stable fixation, early restoration of joint motion, and finally, good functional recovery. We report our experience in managing the fracture and evaluate the operative results for patients who were treated with the Link May Anatomic Bone Plate. METHODS: A retrospective study was performed for tibial pilon fracture from January 1997 to February 2000. A total of thirty patients underwent surgical treatment using Link Distal Fibular Anatomic May Bone Plate, including twenty males and ten females with an average age of 42.6 years (range, 18 to 88 years). According to Rüedi-Allgöwer classification, the fracture patterns were type I in 30% (n = 9), type II in 53.3% (n = 16), and type III in 16.7% (n = 5). Twenty-two fractures (73.3%) were closed type; three (10%) were classified (Gustilo) as grade I open fracture; and five (16.7%) as grade II open fracture. Associated injuries included multiple fractures in five cases and head injury in four cases. All patients were evaluated clinically and radiologically after a mean time of 27.1 months (range, 17 to 39 months). RESULTS: Satisfactory results were obtained in 83.3% of cases. Complications were found in four patients (13.3%), with one nonunion, two superficial wound infections and one deep wound infection. CONCLUSIONS: We concluded that this plating system is one choice of treatment for tibial pilon fracture which provides relatively good outcome.

Adolescent↗
PubMed1990

Carbon fibre composite bone plates. Development, evaluation and early clinical experience.

We compared the mechanical properties of carbon fibre composite bone plates with those of stainless steel and titanium. The composite plates have less stiffness with good fatigue properties. Tissue culture and small animal implantation confirmed the biocompatibility of the material. We also present a preliminary report on the use of the carbon fibre composite plates in 40 forearm fractures. All fractures united, 67% of them showing radiological remodelling within six months. There were no refractures or mechanical failures, but five fractures showed an unexpected reaction; this is discussed.

Adult↗