Rocking-horse phenomenon of the glenoid component: the importance of inclination

Journal of Shoulder and Elbow Surgery
Anne KarelseLieven F De Wilde

Abstract

Abnormal glenoid version positioning has been recognized as a cause of glenoid component failure caused by the rocking horse phenomenon. In contrast, the importance of the glenoid inclination has not been investigated. The computed tomography scans of 152 healthy shoulders were evaluated. A virtual glenoid component was positioned in 2 different planes: the maximum circular plane (MCP) and the inferior circle plane (ICP). The MCP was defined by the best fitting circle of the most superior point of the glenoid and 2 points at the lower glenoid rim. The ICP was defined by the best fitting circle on the rim of the inferior quadrants. The inclination of both planes was measured as the intersection with the scapular plane. We defined the force vector of the rotator force couple and calculated the magnitude of the shear force vector on a virtual glenoid component in both planes during glenohumeral abduction. The inclination of the component positioned in the MCP averaged 95° (range, 84°-108°) and for the ICP averaged 111° (range, 94°-126°). A significant reduction in shear forces was calculated for the glenoid component in the ICP vs the MCP: 98% reduction in 60° of abduction to 49% reduction in 90° of abduction. Shear forces are sig...Continue Reading

References

Dec 1, 1986·Controlled Clinical Trials·J L Fleiss
Feb 12, 2002·The Journal of Bone and Joint Surgery. British Volume·J NagelsP M Rozing
Dec 5, 2002·The Journal of Bone and Joint Surgery. British Volume·I A Trail, D Nuttall
Feb 24, 2005·Journal of Shoulder and Elbow Surgery·Joanne E LabriolaPatrick J McMahon
Jun 3, 2005·Clinical Orthopaedics and Related Research·Steven KleppsEvan L Flatow
Sep 6, 2005·The Journal of Bone and Joint Surgery. American Volume·Edward H YianChristian Gerber
Sep 19, 2006·Journal of Shoulder and Elbow Surgery·Richard W NyffelerChristian Gerber
Sep 23, 2006·Journal of Shoulder and Elbow Surgery·Pol E HuysmansJaap W Willems
May 12, 2007·Journal of Shoulder and Elbow Surgery·David NuttallIan I Trail
Nov 27, 2009·Journal of Biomechanics·Junaid SarahHansen Ulrich
Jan 5, 2011·Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association·Charles NofsingerRobert A Pedowitz
Feb 2, 2013·Skeletal Radiology·Tom R G M VerstraetenLieven F De Wilde
Feb 8, 2013·The Journal of Bone and Joint Surgery. American Volume·Patrick VavkenAndreas M Müller
Jul 16, 2013·Archives of Orthopaedic and Trauma Surgery·Stefan GreinerUlrich Irlenbusch
Dec 18, 2013·Journal of Shoulder and Elbow Surgery·Iwein PiepersLieven De Wilde
Dec 20, 2013·The Journal of Bone and Joint Surgery. American Volume·Anastasios PapadonikolakisFrederick A Matsen
Mar 4, 2014·Journal of Shoulder and Elbow Surgery·Egemen AltanLevent Yalcin
Apr 18, 2014·The Journal of Bone and Joint Surgery. American Volume·Vani J SabesanJoseph P Iannotti
Jun 19, 2014·Journal of Shoulder and Elbow Surgery·Radhika J PatelYingxin Gao
Jun 22, 2014·The Journal of Bone and Joint Surgery. American Volume·Anastasios Papadonikolakis, Frederick A Matsen

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Citations

Feb 21, 2016·Journal of Shoulder and Elbow Surgery·Nikolas K KnowlesGeorge S Athwal
Mar 8, 2016·Journal of Shoulder and Elbow Surgery·Robert M LucasFrederick A Matsen
Jul 14, 2016·Expert Review of Medical Devices·Anne KarelseL De Wilde
Nov 15, 2019·Clinical Orthopaedics and Related Research·Heath B HenningerPeter N Chalmers
Jul 7, 2017·Clinical Orthopaedics and Related Research·Benjamin C ServiceFrederick A Matsen
Mar 3, 2020·The Bone & Joint Journal·Kyong S MinJon J P Warner

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