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Prophylactic Radiotherapy to Prevent the Recurrence of Heterotopic Ossification after Surgical Intervention of the Elbow  

Kim, Hak-Jae (Departments of Radiation Oncology, Seoul National University College of Medicine)
Kim, Jin-Ho (Departments of Radiation Oncology, Seoul National University College of Medicine)
Kim, Kyu-Bo (Departments of Radiation Oncology, Seoul National University College of Medicine)
Choi, Ja-Young (Departments of Radiology, Seoul National University College of Medicine)
Chung, Moon-Sang (Departments of Orthopedic Surgery, Seoul National University College of Medicine)
Kim, Il-Han (Departments of Radiation Oncology, Seoul National University College of Medicine)
Publication Information
Radiation Oncology Journal / v.25, no.4, 2007 , pp. 206-212 More about this Journal
Abstract
Purpose: Heterotopic ossification is a well-known postoperative and post-traumatic complication of the elbow. We reviewed the treatment outcome for the use of low-dose radiation after surgical intervention of the elbow to prevent recurrence of heterotopic ossification (HO). Materials and Methods: Forty-five patients with HO underwent surgical intervention and postoperative radiotherapy of the elbow. The median age of the patients was 29 years ($16{\sim}75$ years), and 27 of the patients were men and 18 were women. The occurrence of HO was mainly due to surgery after fracture (24/45) and traumatic injury (21/45). Limitation of the range of motion (ROM) was the most common symptom of the patients. Thirty-four patients received postoperative radiotherapy with a dose of 8 Gy in 2 fractions; 5 patients received a dose of 10 Gy in 5 fractions and 6 patients received a dose of 7 Gy in 1 fraction. Postoperative radiotherapy was given on the first two postoperative days for most of the patients. Sixteen patients were not given anti-inflammatory medication and 29 patients were given NSAIDs for $1{\sim}8$ months. Results: After a median follow-up period of 18 months (range $6{\sim}72$ months), 41 patients showed clinical improvement and two patients did not show improvement. Assessment of the ROM showed a mean improvement from $0{\sim}135^{\circ}$ to $60{\sim}145^{\circ}$ (p=0.028), and assessment of the functional outcome according to MEPI was from ($15{\sim}95$) to ($80{\sim}100$) (p<0.0001). Two of the 34 patients that were followed-up with radiography had mild radiological recurrence of heterotopic ossification. No complications were observed after the radiotherapy. Conclusion: These results suggested that low-dose radiation administered after surgical intervention is safe and effective to prevent the recurrence of HO in the elbow.
Keywords
Heterotopic ossification; Elbow; Radiotherapy;
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