• Jonathan M Crosby and Martyn J Parker.
• Peterborough and Stamford Hospital NHS Foundation Trust, Department of Orthopaedics, Peterborough City Hospital, CBU PO Box 211, Core C, Bretton Gate, Peterborough PE3 9GZ, England, United Kingdom.
• Injury. 2016 Dec 1; 47 (12): 2760-2763.

AbstractThe degree of femoral neck collapse that occurred after 519 patients with an intracapsular hip fracture treated by internal fixation with a Targon FN implant was measured. Mean femoral neck collapse was 8.0mm and this was increased for displaced fractures in comparison to undisplaced fractures (9.5mm versus 5.9mm, p<0.0001) and for those patients that subsequently developed fracture healing complications (11.6mm versus 7.1mm, p<0.0001). At one year from injury femoral neck collapse in excess of 15mm was associated with an increase in the degree of residual pain (p=0.01). A clear relationship between increased collapse and increased loss of mobility was demonstrated (P<0.0001). This study confirms previous smaller studies that excessive femoral neck collapse (of more than 15mm) is more common for displaced fractures and presents new data to demonstrate that excessive femoral neck collapse is associated with an increased risk of fracture healing complications and increased loss of function. Future studies are now justified that consider methods to reduce fracture collapse.Copyright © 2016 Elsevier Ltd. All rights reserved.

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