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Intramedullary nailing for subtrochanteric fracture in autosomal dominant Type II osteopetrosis: Case report of 2 patients

Authors
 Junyoung Kim  ;  Young Chang Park  ;  Hyun-Soo Moon  ;  Woo Sung Do  ;  Kyu Hyun Yang 
Citation
 MEDICINE, Vol.99(32) : e21648, 2020-08 
Journal Title
 MEDICINE 
ISSN
 0025-7974 
Issue Date
2020-08
MeSH
Adult ; Aged ; Female ; Fracture Fixation, Intramedullary / methods* ; Hip Fractures / prevention & control* ; Hip Fractures / surgery ; Humans ; Male ; Osteopetrosis / complications ; Osteopetrosis / surgery* ; Treatment Outcome
Abstract
Rationale: Autosomal dominant type II (AD II) osteopetrosis is a rare inheritable metabolic bone disease characterized by hard but brittle bone and a narrow medullary canal. Intramedullary nailing (IMN) is a difficult but attractive option for the treatment of subtrochanteric fractures in patients with AD II osteopetrosis. Patient concerns and diagnosis: Two patients with AD II osteopetrosis sustained subtrochanteric fractures after a fall. Interventions: IMN was performed through the sequential use of instruments such as a 4.9-mm drill bit, small reamer, and larger reamer for over-reaming. Outcomes: In the first case, IMN left some gap at the fracture site. Dynamization was performed to treat the delayed union at 6 months postoperatively. The fracture healed at 10 months after the dynamization. In the second case, IMN was successful without a gap, and the fracture healed at 8 months. Lessons: Although IMN is difficult to perform owing to partial obliteration of the medullary canal in AD II osteopetrosis, it can be performed with sequential widening of the medullary canal using various instruments. In addition, the fracture gap should not be left uncorrected during IMN to attain fracture union.
Files in This Item:
T202003379.pdf Download
DOI
10.1097/MD.0000000000021648
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학교실) > 1. Journal Papers
Yonsei Authors
Moon, Hyun-Soo(문현수)
Park, Young Chang(박영창)
Yang, Kyu Hyun(양규현) ORCID logo https://orcid.org/0000-0001-7183-588X
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/179624
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