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Reconstruction using monorail fixator for forearm osteochondroma Masada type I and IIb: A case series

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Introduction Osteochondroma (solitary) and multiple hereditary exostoses (plural) are defined as a cartilage-capped bony projection arising on the external surface of bone containing a marrow cavity that is continuous with… Click to show full abstract

Introduction Osteochondroma (solitary) and multiple hereditary exostoses (plural) are defined as a cartilage-capped bony projection arising on the external surface of bone containing a marrow cavity that is continuous with that of the underlying bone. These tumors grow slowly and develop to cause symptoms such as limited range of motion, joint pain, lumps, and deformities. The use of ulnar distraction osteogenesis has gained popularity in treating deformity in forearm osteochondroma. Problems that arise including bone angulation and persistent radial head dislocation. Case presentation We describe eight cases of forearm osteochondroma that came to the Prof. Dr. R. Soeharso Orthopedic Hospital, Surakarta, Indonesia. We found two variations in the classification of Masada in these 8 patients, Masada type I and IIB. The main complaint was a bent arm. We decided to do surgery in the form of tumor resection and reconstruction of the deformity by using ulnar gradual lengthening and osteotomies. The results of the procedure were investigated in this study, using clinical and radiological parameters focusing on medium-term functional and structural outcomes. Discussion and conclusion Eight patients had overall good results, although performed with a different sequence of operating techniques. Ulnar lengthening with a monorail fixator is still the main choice in its implementation. Gradual ulnar lengthening improves not only the deformity but also the functionality of the associated forearm.

Keywords: type iib; masada type; case; monorail fixator; forearm osteochondroma; osteochondroma

Journal Title: International Journal of Surgery Case Reports
Year Published: 2021

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