Vol. 9 | Issue 1 | January-February 2021 | Page: 02-07 | Anil K. Bhat, Mithun Pai. G, Ashwath M. Acharya, Sourab Shetty. S
Authors: Anil K. Bhat , Mithun Pai. G , Ashwath M. Acharya , Sourab Shetty. S 
 Department of Orthopaedics, Unit of Hand and Microsurgery, Kasturba Medical College, Manipal Academy of
Higher education, Manipal, Karnataka, India.
Address of Correspondence
Dr. Mithun Pai. G,
Senior Resident, Department of Orthopaedics, Kasturba Medical College, Mangalore, Manipal Academy of
Higher Education Karnataka, India.
Avascular necrosis or osteonecrosis is said to be higher when the fracture involves proximal one-third of the scaphoid with an incidence of 13 % to 27%1. The reason for this is the tenuous1 blood supply of the scaphoid, primarily from the branch of the radial artery entering mainly from the distal and dorsal surface of the bone. The proximal pole, therefore, is dependent entirely on this intraosseous blood flow. This retrograde, axial and unidirectional pattern of blood supply can result in a protracted healing process after a fracture which eventually leads to osteonecrosis, collapse and arthritis leading to disability.
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|How to Cite this article: Bhat AK, Pai MG, Acharya AM, Shetty SS What | Exactly is Avascular Necrosis in Nonunion Scaphoid? | Journal of Karnataka Orthopaedic Association | January-February 2021; 9(1): 02-07.|