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

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

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

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

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

PURPOSE: We studied the efficacy of preserved posterior cortex connecting to adjacent muscle or periosteum during wide debridement in the treatment of infected nonunion of the tibia. MATERIALS AND METHODS: From January 2001 to May 2011, 12 cases of infected nonunion of the tibia with segmental defect larger than 4 cm after wide debridement were selected. The selected cases were categorized according to two groups; group 1 with preserved posterior cortex in the segmental defect site - six cases, group 2 without posterior cortex - six cases. The results were compared by assessing the size of bone defect, the interval between wide debridement and bone reconstruction, bony union time, complications, and clinical results. RESULTS: The mean length of bone defect of group 1 was 7.6 cm (range 4.3-11.0 cm) and that of group 2 was 6.4 cm (range 4.0-12.0 cm). The interval between wide debridement and bone reconstruction was 10.0 weeks (range 5-18 weeks) for group 1, and 12.1 weeks (range 0-24 weeks) for group 2. The time for bony union of group 1 was 6.2 months (range 5-7 months), and that of group 2 was 10.8 months (range 7-18 months). In group 2, there were two cases of fatigue fracture and two cases of docking site nonunion after distraction osteogenesis. CONCLUSION: The preserved posterior cortex after wide debridement of infected nonunion of the tibia helps bony union and reduces the treatment period.
Debridement ; Fractures, Stress ; Osteogenesis, Distraction ; Periosteum ; Tibia*

PURPOSE: To evaluate the factors influencing periosteal interposition in distal tibial physeal fractures of children. MATERIALS AND METHODS: 34 cases of distal tibial physeal fractures were analysed. We confirmed the presence of periosteal interposition with MRI in all cases and accessed the relationship between periosteal interposition and gender, age, cause of injury, type of fracture, degree of initial displacement and after closed reduction. RESULTS: 9 (26.5%) of 34 fractures had interposed periosteum. There was no statistically significant correlation between periosteal interposition and gender, age, cause of injury (p>0.05). 5 (83.3%) of 6 pronation-eversion-external rotation type of fractures according to Dias-Tachjian classification had interposed periosteum and that was a statistically significant correlation (p=0.006). As Salter-Harris type was toward to high degree, there were decreasing tendency of periosteal interposition (p=0.026). There was high rate of periosteal interposition in case of displacement more than 2 mm in each initial and after closed reduction (p<0.05). CONCLUSION: There was high incidence of periosteal interposition in pronation-eversion-external rotation type with displacement more than 2 mm in distal tibial physeal fractures of children. But, periosteal interposition could occur in fractures with mild displacement less than 2 mm, if initial fracture displacement was more than 2 mm, the methods of treatment should be decided after confirm the presence of periosteal interposition with MRI after closed reduction.
Child ; Displacement (Psychology) ; Humans ; Incidence ; Periosteum