An osteochondroma is an osseous protuberance with cartilaginous growth potential, usually arising in skeletal bone and relatively uncommon in the craniofacial bone. Osteochondroma of the craniofacial region usually occurs at the condyle or the tip of the coronoid process, and rarely arises in the mandibular body, symphysis, ramus, and similar areas. Excision of the lesion including the periosteum is curative, and recurrence or malignant change (usually to a chondrosarcoma) after treatment is rare. We present an atypical case of osteochondroma in the left mandibular inferior border with review of literature.
Mandible ; Osteochondroma ; Periosteum ; Recurrence

No abstract available.
Periosteum* ; Transforming Growth Factors*

periosteum was resutrured after implantation of Medpor(R) as a experimental site, while in the calvarial bone the reflected periosteum resutured without implantation as a control site. While in the calvarial bone the reflexted periosteum resutured without implantation al a control site. The histologic examination was performed after 1,-,2-,4-,8-,12-,24-, weeks implantation in calvaria of rats. I concluded that there was avundant ingrowth of soft tissue and bone without any adverse tissue fespones and that it shows good stability.]]>
Animals ; Periosteum ; Rats ; Skull

PURPOSE: To report the results obtained after fixation of the eyeball to the periosteum over the posterior lacrimal crest in 5 cases of inveterate exotropia. METHODS: From September 2011 to January 2013, 5 patients with inveterate exotropia and a history of surgery for exotropia underwent fixation of the eyeball to the periosteum over the posterior lacrimal crest. RESULTS: The mean preoperative exotropia of 35 +/- 10.61 PD changed to esotropia of 5.8 +/- 17.28 PD at the one week postoperative visit and exotropia of 13.2 +/- 11.34 PD at the final postoperative visit (mean, 6.05 months after surgery). At the final postoperative visit, 2 patients who had ocular adhesion due to trauma showed 25 PD exotropia. None of the patients showed injuries to the lacrimal system, but 2 patients showed conjunctival granuloma. CONCLUSIONS: Fixation of the eyeball to the periosteum over the posterior lacrimal crest is an effective approach for the management of inveterate exotropia, except in cases of exotropia combined with ocular adhesion.
Esotropia ; Exotropia* ; Granuloma ; Humans ; Periosteum*

The purpose of this study was to investigate the effects of immediate non-functional loading by analyzing histomorphology around the implant tissues in dogs. Five eight- to nine-month-old full-grown dogs weighing around 12 kg were used in the study. Group I (control group) comprised those in which delayed loading was applied to the right side of the mandible, and Group II (experimental group) consisted of dogs in which immediate loading was performed on the left side of the mandible. Resorbable blast media (RBM)-treated double-threaded US III implants measuring 3.5 mm in diameter and 11 mm long were used in the study. Each animal received four implants in each group, for a total of 40 implants. Cemented type abutments were used after implantation. An 8-week period was allowed for bone healing and an abutment was placed after exposing the periosteum for loading. An implant sample was obtained from bone blocks taken when the dogs were killed at 16 weeks after loading. A Mann-Whitney U-test was performed to evaluate statistical significance. Student's t-test was used for the histological evaluation. The bone formation ratio in Groups 1 and 2 was 88.23 and 86.41%, respectively. No significant difference in new bone formation was observed in the two groups. As no significant difference was seen in new bone formation between the delayed and immediate loading groups, early loading might be possible after implant placement.
Animals ; Dogs ; Mandible ; Osteogenesis ; Periosteum

Parosteal lipoma is a rare benign tumor containing mature adipose tissue having an intimate relationship to the periosteum. Characteristically, this tumor presents as a lipomatous mass adjacent to bone, eliciting variable reactive changes in the underlying cortex. We report a case of parosteal lipoma of the foot. The MR findings consisted of juxtacortical lipomatous mass abutting to bony protuberance, with internal fibrous striations, and osseous reaction in the adjacent bone. By the aid of multiplanar imaging capability, high spatial and contrast resolution of MRI, characteristic features of parosteal lipoma can lead to diagnosis on imaging.
Adipose Tissue ; Foot ; Lipoma ; Periosteum

Periostin, a kind of matricellular protein highly expressed in periodontal ligament and periosteum, is an important regulator of the integrity of periodontal ligament and periodontitis processes. Periostin has been shown to play a positive role in the recovery of periodontitis. This paper reviews relevant literature about the role of periostin in periodontal tissue and periodontitis.
Humans ; Periodontal Ligament ; Periodontitis ; Periosteum

Parosteal lipoma is a rare kind of lipoma that occurring adipous tissue around the periosteum. It has been reported most commonly in the femur, the radius, the tibia and the fibular. Treatment consists of resecting the lipomatous tumor with further exeresis of the bone and periosteal excrescence in cases with hyperostosis. The authors report a rare case of parosteal lipoma occurring at the medial portion of the femur shaft with a review of the relevant literatures.
Femur ; Hyperostosis ; Lipoma ; Periosteum ; Radius ; Tibia

Medial orbital wall fracture can easily be overlooked because typical clinical symptoms appear in only a few instances. However, if it is left untreated in case of no diplopia, cosmetically undesirable enophthalmos may develop. Various cutaneous approaches, previously used, may leave noticeable scar or provide a limited overview of the orbit medial wall fracture site. We used the transcaruncular approach in 36 cases of 35 patients for reconstruction of the medial orbital wall fracture. The incision was made at the junction of the medial 3/4 and lateral 1/4 of the caruncle, and extended along the conjunctival fornix superiorly and inferiorly to or beyond both puncta for 10 - 15 mm long respectively. After soft tissue was dissected, periosteum was incised at the posterior to the posterior lacrimal crest. Implants up to a height of 2.5 cm could be inserted.The diplopia was resolved in all cases after the surgery, and enophthalmos measured 0 to 2 mm in all patients. Postoperative computed tomographic scans showed favorable reduction of the herniated soft tissues and anatomic reduction of the medial wall without complication related to the surgical approach in all cases. Transcaruncular approach is a better alternative to transcutaneous incisions because it provides wide exposure of the medial orbital wall, no visible cutaneous scar, short operation time, and no damage of important internal structures.
Cicatrix ; Diplopia ; Enophthalmos ; Humans ; Orbit* ; Periosteum

To investigate the effect of the periosteum for the new bone formation into bone substitutes, artificial full thickness calvarial bone defects were made in diameter of 6mm in 45 New Zieland white rabbits and the defects were filled with Medpor(R) and Biocoral(R) as bone substitutes and with Surgicel(R) as control material. Each group was then divided into three sub-groups: non-periosteal group, periosteal flap group and periosteal graft group. Bone formation was investigated morphologically, radiologically and histologically and the degree of bone formation was calculated with scanner(Scanmaker III, Microtek Co.)and image processing program. In the non-periosteal group, there was no bone formation in all artificial bone substitutes 10 days after experiment. The amount of bone formation in Biocoral(R), Medpor(R) and Surgicel(R) was 3.58 +/- 1.70%, 0.00%, 2.11 +/- 1.73% respectively 6 weeks after experiment, and 27.43 +/- 11.92%, 15.72 +/- 5.47% and 3.59 +/- 2.18% respectively 3 months after experiment. In the periosteal flap group, there was no bone formation in Medpor(R) and Surgicel(R) but 6.84 +/- 3.21% of the bone formation in Biocoral(R) 6 weeks after experiment. The amount of bone formation in Biocoral(R), Medpor(R) and Surgicel(R) was 41.83 +/- 11.32%, 20.72 +/- 6.53% and 22.32 +/- 5.85% respectively 3 months after experiment. In the periosteal graft group, there was cartilage formation in Biocoral(R) and Medpor(R) 10 days after experiment. The amount of bone formation in Biocoral(R), Medpor(R) and Surgicel(R) was 25.38 +/- 6.49%, 17.16 +/- 4.03%, 7.95 +/- 3.17% respectively 6 weeks after experiment and 80.87 +/- 11.24%, 41.20 +/- 8.87%, 44.93 +/- 16.48% respectively 3 months after experiment. In conclusion, the periosteum played an important role for the bone formation into bone substitutes of Biocoral(R) and Medpor(R). The amount of bone formation was the greatest in the periosteal graft group among three groups and greater in Biocoral(R) than in Medpor(R).
Bone Substitutes* ; Cartilage ; Osteogenesis* ; Periosteum* ; Rabbits ; Transplants