ols is an effective method for increasing new bone formation in distracted areas.
Osteogenesis* ; Osteogenesis, Distraction* ; Rabbits*

In recent, distraction osteogenesis has been used to correct skeletal malformations and discrepancies in the craniofacial area. It also seems to be considered as an alternative in the treatment of severe midfacial hypoplasia. There are some types of distractors for midfacial distraction such as subcutaneous distractors and rigid external distractors. We used a rigid external distractor for correction (RED) of craniofacial hypoplasia. Seven patients underwent a midfacial distraction osteogenesis with a rigid external distractor between April 2000 and July 2001. Three patients suffered from Apert's syndrome, three patients from Crouzon's syndrome, and one patient suffered from midfacial hypoplasia due to midfacial radiotheraphy during childhood. On average, the mean distance of distraction was 19.8mm (10~25mm) and the distraction lasted for 24 days. The patients showed no severe complications like infections, optic disturbance, or wrong distraction vectors. One patient complained pain on the site of the occipital fixation of the distractor. In one patient who underwent subtotal craniectomy 3 months before Le Fort III distraction, the distractor was dislocated as the cranial bone was too weak to support the distractor. This report reveals that the application of rigid external distractor and transfacial pull results in an exact control of the distraction vectors and an excellent correction of midfacial hypoplasia without any severe complications.
Humans ; Osteogenesis, Distraction*

Humans ; Osteogenesis, Distraction ; instrumentation

No abstract available.
Extremities* ; Osteogenesis, Distraction*

No abstract available.
Extremities* ; Osteogenesis, Distraction*

No abstract available.
Metatarsal Bones* ; Osteogenesis, Distraction*

Distraction osteogenesis for correction of skeletal relationship was introduced for lengthening legs by Ilizarov. And it is important to keep the Ilizarov principles for distraction osteogenesis. Distraction osteogenesis in midface area was recommendation treatment to reduce the treatment time and the side effects during orthodontic treatment. The patient's age, method of bone cutting, distraction rhythm, position of distraction device and consolidation period were consideration factors during distraction osteogenesis in midface area. In this article, we present a cases that were treated by using anterior segmental DO.]]>
Leg ; Osteogenesis, Distraction

Humans ; Jaw ; surgery ; Osteogenesis, Distraction

PURPOSE: To evaluate the importance of various surgical techniques in the treatment of brachymetatarsia. MATERIALS AND METHODS: The study involved 33 cases, categorized as follows: group A: treated by one-stage lengthening (4) or callotasis (9) without bone shortening; group B: treated either by one-stage lengthening (3) or callotasis (15) with bone shortening or bone shortening only (2). Fifteen patients were reviewed in terms of the length gain (LG), healing index (HI), percentage increase (PI), and complications. RESULTS: The results in both group A [one-stage lengthening (mean: LG 1.4 cm, HI 1.2 months/cm, PI 0.3) and callotasis distraction (LG 1.8 cm, HI 2.2 months/cm, PI 0.4)] and group B [one-stage lengthening (LG 1.3 cm, HI 1.3 months/cm, PI 0.3) and callotasis (LG 1.8 cm, HI 2.1 months/cm, PI 0.5)] were satisfactory. The averaged amount of bone shortening at 23 levels was 0.8 cm. It magnified the cosmetic effect and consequently reduced on average 1.8 months after treatment period in the callotasis group. CONCLUSION: In managing brachymetatarsia, bone shortening of the neighboring metatarsal and phalanx, a form of epiphysiodesis, and surrounding soft tissue release reduce the treatment period and the associated complications.
Humans ; Metatarsal Bones ; Osteogenesis, Distraction

OBJECTIVETo investigate a novel technique for new bone formation--periosteal distraction osteogenesis.

METHODSA custom made periosteal distraction device was fixed to bilateral surface of the mandible in three rabbits. Periosteal distraction was performed on the left side of the mandible, the right side of the mandible served as the control. The animals were sacrificed at the end of distraction process. All the specimens were X-rayed and histologically examinated.

RESULTSAll three animals survived with no obvious complications. Both in mass specimens and X-rays, there showed new bone formation on the distracted side of the mandible. In histological examinations, there was osteoblast-like cell infiltration and bone tissue formation in the distracted area.

CONCLUSIONPeriosteal distraction osteogenesis can provide a novel technique for the repair of bone defects.