Osteoradionecrosis, a rare complication of radiation therapy, is a slow progression disease which affects the surrounding structures of spinal components. It essentially weakens the soft tissue and bony configuration and can cause nerve impingement or cord compression. We describe a patient who underwent radiotherapy for thyroid cancer and presented with cervical kyphosis with anterolisthesis of C3/C4 and C4/C5 some 32 years later. We explore the role of anterior and posterior fusion, as well as hyperbaric oxygen therapy in promoting healing.
Osteoradionecrosis

No abstract available.
Jaw* ; Osteoradionecrosis*

No abstract available.
Jaw* ; Osteoradionecrosis*

BACKGROUND: Pathologic fractures are caused by diseases that lead to weakness of the bone structure. This process sometimes occurs owing to bony change after radiation therapy. Treatment of pathologic fractures may be difficult because of previous radiation therapy. METHODS: In this study, we analyzed clinical and radiographic data and progress of five patients with mandibular pathological fractures who had received postoperative radiation therapy following cancer surgery. RESULTS: Patients received an average radiation dose of 59.2 (SD, 7.2) Gy. Four of five patients exhibited bone union regardless of whether open reduction and internal fixation (OR/IF) was performed. Patients have the potential to heal after postoperative radiation therapy. Treatment of a pathologic fracture following postoperative radiation therapy, such as traditional treatment for other types of fractures, may be performed using OR/IF or CR. OR/IF may be selected in cases of significant bone deviation, small remaining bone volume, or occlusive change. CONCLUSION: Patients have the potential to heal after postoperative radiation therapy.
Fractures, Spontaneous* ; Humans ; Osteoradionecrosis

osteoradionecrosis, osteomyelitis, malignancy and cyst. Pathologic fractures are difficult to treat because management is needed not only for the fractures of the mandible but also the underlying disease the is weakening the bone. Additionally, the diseased mandible in the pathologic fracture frequently has abnormal bone healing capacity. We experienced three cases of pathologic fractures of the mandible resulting from cyst, malignancy and osteomyelitis. The treatment of these cases was complicated and time-consuming. Therefore, we present our three cases and discuss the management of pathologic fractures of the mandible.]]>
Fractures, Spontaneous ; Mandible ; Osteomyelitis ; Osteoradionecrosis

We reviewed 56 patients who received mandibulotomy at Yonsei medical center between 1989 and 1999. We also analysed the complications associated with mandibulotomy and its contributing factors. The complications occur in 16 patients(28.6%) and are classified into two categories; intraoperative and postperative complications. Nonunion was observed in 5 patients and osteoradionecrosis in 5. The patients who received preoperative radiation therapy were more tend to develop nonunion and osteoradionecrosis. This study suggests the benefits of mandibulotomy as a surgical approach to oral cancer: 1. Paramedian osteotomy was recommended for preservation of neurovascular bundle and ease of surgical access. 2. By using thin saw blade, reapproximation was improved with minimal bone loss. 3. osteotomy on anterior mandible which lies outside the usual portals of radiation therapy decreases the incidence of osteoradionecrosis.
Humans ; Incidence ; Mandible ; Mouth Neoplasms* ; Osteoradionecrosis ; Osteotomy

OBJECTIVES: This study was performed to investigate the effects of hyperbaric oxygen and other approaches for treating the osteoradionecrosis of the jaws (ORNJ) systematically. METHODS: According to the preset inclusion and exclusion criteria, randomized controlled trials and cohort studies on hyperbaric oxygen in the treatment of ORNJ were screened, and foreign language databases such as PubMed, EMBASE, and Cochrane library were searched via a computer; Chinese databases such as CNKI, VIP, Wanfang data, and CBM were searched from the established database to September 2020. Relevant books were searched manually to collect all literatures on the efficacy of hyperbaric oxygen and its related therapies in ORNJ treatment. Two researchers were independent and mutually blind, the papers were selected, data were collected, and the bias risk was evaluated. If any difference was detected, it would be decided by discussion or arbitrated by a third party. The data related to the efficacy of hyperbaric oxygen and its related therapy in the treatment of the ORNJ were extracted, and the Revman5.4 software was used for Meta-analysis. In case of large heterogeneity, sensitivity analysis was performed. A funnel chart was used to evaluate possible publication bias qualitatively. RESULTS: Four randomized controlled trials and seven cohort studies were included in Meta-analyses. In ORNJ treatment, no significant differences between the group subjected to hyperbaric oxygen and both surgery and antibiotics and the group that underwent both surgery and antibiotics (RR=1.16, 95%CI: 0.86~1.58, CONCLUSIONS Hyperbaric oxygen therapy cannot replace surgery and antibiotic therapy. Hyperbaric oxygen therapy is not superior to antibiotics and antifibrotic drugs, but the benefits of antifibrotic drugs should be further explored.
Humans ; Hyperbaric Oxygenation ; Jaw ; Osteoradionecrosis/therapy*

The osteoradionecrosis of the mandible can be a serious complication of radiotherapy for malignancies of the head and neck. The cause and pathogenesis of osteoradionecrosis are unclear and anecdotal. There are various treatment-, patient- and tumor-related risk factors on development of osteoradionecrosis. The treatment of osteoradionecrosis relies on conservative measures (antibiotics, debridement, irrigation and HBO) and surgical measures (sequestrectomy, marginal resection and segmental resection with or without reconstruction). But the indications are not defined. We present the two cases of patients who were not controlled by conservative treatment but good-resulted by surgical treatment.
Debridement ; Head ; Humans ; Mandible* ; Neck ; Osteoradionecrosis* ; Radiotherapy ; Risk Factors

The use of a myomucosal flap from the buccinator muscle is a valuable reconstruction method for intraoral defects. In this paper, we report the clinical advantages of using a buccinator myomucosal flap for the treatment of partial mandibular defects caused by osteoradionecrosis. We implemented a buccinator myomucosal flap for the reconstruction of a partial mandibular defect in a 55-year-old man with tonsil cancer and partial mandibular defects caused by osteoradionecrosis. The total operating time was 90 minutes. Twelve months after the reconstruction, the patient remains free of disease. A buccinator myomucosal flap can be used for the reconstruction of partial mandibular defects caused by osteoradionecrosis. It is a reliable method for reconstructing small mandibular defects.
Humans ; Mandible* ; Mandibular Reconstruction ; Middle Aged ; Myocutaneous Flap ; Osteoradionecrosis* ; Reconstructive Surgical Procedures ; Tonsillar Neoplasms

Osteoradionecrosis is one of the most serious complication after heavy irradiation of bone and most particularly following treatment of cancers within the head and neck. The irradiated bone has the decreased vascularity and is easily infected. As a result, the spread of infection may cause a nonhealing wound that is very difficult to be treated. A comprehensive prophylactic dental care as well as proper blocking of the radiation field before radiotherapy must be considered to reduce the risk of osteoradionecrosis. We present three cases of osteoradionecrosis which developed after extraction of teeth in irradiated patients.
Dental Care ; Head ; Humans ; Jaw* ; Neck ; Osteoradionecrosis* ; Radiotherapy ; Tooth ; Tooth Extraction ; Wounds and Injuries