Walter, Sebastian Gottfried, Endler, Christoph Hans-Jurgen, Remig, Anna Christina, Luetkens, Julian A., Bornemann, Rahel and Placzek, Richard (2020). Risk factors for failed closed reduction in dislocated developmental dysplastic hips. Int. Orthop., 44 (11). S. 2343 - 2349. NEW YORK: SPRINGER. ISSN 1432-5195

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Abstract

Aim of the study The present study aimed to identify risk factors for unsuccessful CR. Introduction Closed reduction (CR) represents the gold standard for treatment of developmental dysplasia of the hip (DDH), but to a minor percentage, it fails to reduce dysplastic hips successfully. Methods Seventy-three dysplastic hips underwent closed reduction and post-interventional MRI of the pelvis. MRIs were evaluated for successful reduction of the hip, volumes of femoral heads, and acetabular diameter. Initial treatment results were correlated to AC angles at two years of follow-up. Contralateral, healthy hips served as control. Results Out of 73 instable, dysplastic hips, there were nine cases of CR failure. These cases showed significantly increased femoral head volumes (p = 0.002) and a significantly (p = 0.02) larger ratio of femoral head volume to acetabular opening area. There was no significant difference (p = 0.15) in acetabular diameter between both groups. At two years of follow-up, AC angles were significantly (p = 0.003) larger and pathologic in cases of CR failure. Conclusion Exclusive enlargement of the femoral head is a risk factor for unsuccessful reduction and its ratio to the acetabular opening surface is predictive for CR success in DDH.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Walter, Sebastian GottfriedUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Endler, Christoph Hans-JurgenUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Remig, Anna ChristinaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Luetkens, Julian A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bornemann, RahelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Placzek, RichardUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-332129
DOI: 10.1007/s00264-020-04655-1
Journal or Publication Title: Int. Orthop.
Volume: 44
Number: 11
Page Range: S. 2343 - 2349
Date: 2020
Publisher: SPRINGER
Place of Publication: NEW YORK
ISSN: 1432-5195
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
AVASCULAR NECROSIS; MANAGEMENT; PREDICTOR; CHILDRENMultiple languages
OrthopedicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/33212

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