The Effect of Humeral Head Backside Contact on Humeral Bone Stress following Total Shoulder Arthroplasty with a Short Humeral Stem

OrthoMedia ◽  
2022 ◽  
2009 ◽  
Vol 18 (4) ◽  
pp. 505-510 ◽  
Author(s):  
Christian Gerber ◽  
John G. Costouros ◽  
Atul Sukthankar ◽  
Sandro F. Fucentese

2013 ◽  
Vol 22 (7) ◽  
pp. 886-893 ◽  
Author(s):  
Adam Sassoon ◽  
Bradley Schoch ◽  
Peter Rhee ◽  
Cathy D. Schleck ◽  
William S. Harmsen ◽  
...  

Orthopedics ◽  
2013 ◽  
Vol 36 (3) ◽  
pp. e377-e380 ◽  
Author(s):  
Matthew F. Dilisio ◽  
Jeffrey S. Noble ◽  
Robert H. Bell ◽  
Curtis R. Noel

2019 ◽  
Vol 3 ◽  
pp. ???
Author(s):  
Matthew J Smith ◽  
Christopher M Loftis ◽  
Nathan W Skelley

Background The biconcave (B2) glenoid is characterized by preservation of the anterior portion of the native glenoid with asymmetric wear of the posterior glenoid. Surgical options for glenoid correction have evolved. The goal of shoulder arthroplasty is to place the implants in such a manner to return the humeral head to a centered position and restore the joint line to a neutral position. There is no current consensus on method of treatment and correction. Methods The current and historical literature on total shoulder arthroplasty was used to examine technique viability. Results Asymmetric remaining can be used to address up to 15° of version correction without compromise of cortical bone. It is important to have the proper presurgical planning, to understand the limitations of correction, and to have other options available to treat the biconcave glenoid.


2021 ◽  
Vol 30 (1) ◽  
pp. 51-56
Author(s):  
Ryan M. Cox ◽  
Daniel Sholder ◽  
Laura Stoll ◽  
Joseph A. Abboud ◽  
Gerald R. Williams ◽  
...  

2012 ◽  
Vol 94 (19) ◽  
pp. 1777-1785 ◽  
Author(s):  
Jasvinder A. Singh ◽  
John Sperling ◽  
Cathy Schleck ◽  
William Harmsen ◽  
Robert Cofield

2020 ◽  
Vol 4 (3) ◽  
pp. 638-643
Author(s):  
Aaron M. Chamberlain ◽  
Nathan Orvets ◽  
Brendan Patterson ◽  
Peter Chalmers ◽  
Michelle Gosselin ◽  
...  

Author(s):  
Jihui Li ◽  
Thomas R. Gardner ◽  
William N. Levine ◽  
Louis U. Bigliani ◽  
Christopher S. Ahmad

Today nonconforming glenohumeral implants are a common choice for total shoulder arthroplasty (TSA). Use of the conforming implant has decreased because of the “rocking-horse” effect [1], which leads to high stress and moments at the glenoid rim when the humeral head subluxes during range of motion. Retrieval studies have provided evidence that the rocking-horse effect is the major cause of implant loosening and fracture, delamination and deformation of the glenoid rim. Nonconforming glenoid implants, owing to a larger radius of the glenoid articular surface, can reduce the rocking-horse effect by improving the rim-head contact during subluxation. However, the nonconforming shape increases the contact stress and instability when the humeral head is in the central region, where motion frequently occurs [2].


2019 ◽  
Vol 142 (1) ◽  
Author(s):  
Matteo Mancuso ◽  
Arash Arami ◽  
Fabio Becce ◽  
Alain Farron ◽  
Alexandre Terrier ◽  
...  

Abstract Total shoulder arthroplasty (TSA) is an effective treatment for glenohumeral (GH) osteoarthritis. However, it still suffers from a substantial rate of mechanical failure, which may be related to cyclic off-center loading of the humeral head on the glenoid. In this work, we present the design and evaluation of a GH joint robotic simulator developed to study GH translations. This five-degree-of-freedom robot was designed to replicate the rotations (±40 deg, accuracy 0.5 deg) and three-dimensional (3D) forces (up to 2 kN, with a 1% error settling time of 0.6 s) that the humeral implant exerts on the glenoid implant. We tested the performances of the simulator using force patterns measured in real patients. Moreover, we evaluated the effect of different orientations of the glenoid implant on joint stability. When simulating realistic dynamic forces and implant orientations, the simulator was able to reproduce stable behavior by measuring the translations of the humeral head of less than 24 mm with respect to the glenoid implant. Simulation with quasi-static forces showed dislocation in extreme ranges of implant orientation. The robotic GH simulator presented here was able to reproduce physiological GH forces and may therefore be used to further evaluate the effects of glenoid implant design and orientation on joint stability.


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