Do the radial head prosthesis components fit with the anatomical structures of the proximal radioulnar joint?

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Do the radial head prosthesis components fit with the anatomical structures of the proximal radioulnar joint? / Wegmann, Kilian; Hain, Moritz K; Ries, Christian; Neiss, Wolfram F; Müller, Lars P; Burkhart, Klaus J.

In: SURG RADIOL ANAT, Vol. 37, No. 7, 09.2015, p. 743-7.

Research output: SCORING: Contribution to journalSCORING: Journal articleResearchpeer-review

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@article{607fcc93651f4cf7a95ac0f36a05cb1a,
title = "Do the radial head prosthesis components fit with the anatomical structures of the proximal radioulnar joint?",
abstract = "PURPOSE: The fitting accuracy of radial head components has been investigated in the capitulo-radial joint, and reduced contact after prosthetic replacement of the radial head has been observed. The kinematics of the proximal radioulnar joint (PRUJ) are affected by radial head arthroplasty as well, but have not yet been investigated in this regard.METHODS: The elbow joints of 60 upper extremities of formalin-fixed body donors were disarticulated to obtain a good view of the PRUJ. Each specimen was mounted on the examining table and radial head position in the native PRUJ was assessed in neutral position, full pronation, and full supination. Measurements were repeated after implantation of mono- and bi-polar prostheses.RESULTS: Analysis of the distribution of the joint contacts in the compartments showed significant differences after radial head replacement. In comparison to the native joint, after bipolar and monopolar radial head replacement, the physiological shift of the proximal radius was altered.DISCUSSION: The physiological shift of the joint contact of the radial head from anterior to posterior during forearm rotation that was found in the native joint in our cadaver model was not observed after prosthetic replacement. With higher conformity and physiological kinematic of radial head prostheses, possibly lower shear forces and lower contact pressures would be generated.CLINICAL RELEVANCE: The tested radial head prostheses do not replicate the physiological kinematics of the radial head. Further development in the prosthesis design has to be made. The meticulous reconstruction of the annular ligament seems to be of importance to increase joint contact.",
keywords = "Aged, Aged, 80 and over, Arthroplasty, Replacement, Elbow/methods, Biomechanical Phenomena, Cadaver, Dissection, Elbow Joint/anatomy & histology, Elbow Prosthesis, Female, Humans, Male, Prosthesis Design, Prosthesis Implantation/methods, Radius/anatomy & histology, Range of Motion, Articular/physiology, Risk Factors, Sensitivity and Specificity",
author = "Kilian Wegmann and Hain, {Moritz K} and Christian Ries and Neiss, {Wolfram F} and M{\"u}ller, {Lars P} and Burkhart, {Klaus J}",
year = "2015",
month = sep,
doi = "10.1007/s00276-014-1407-2",
language = "English",
volume = "37",
pages = "743--7",
journal = "SURG RADIOL ANAT",
issn = "0930-1038",
publisher = "Springer Paris",
number = "7",

}

RIS

TY - JOUR

T1 - Do the radial head prosthesis components fit with the anatomical structures of the proximal radioulnar joint?

AU - Wegmann, Kilian

AU - Hain, Moritz K

AU - Ries, Christian

AU - Neiss, Wolfram F

AU - Müller, Lars P

AU - Burkhart, Klaus J

PY - 2015/9

Y1 - 2015/9

N2 - PURPOSE: The fitting accuracy of radial head components has been investigated in the capitulo-radial joint, and reduced contact after prosthetic replacement of the radial head has been observed. The kinematics of the proximal radioulnar joint (PRUJ) are affected by radial head arthroplasty as well, but have not yet been investigated in this regard.METHODS: The elbow joints of 60 upper extremities of formalin-fixed body donors were disarticulated to obtain a good view of the PRUJ. Each specimen was mounted on the examining table and radial head position in the native PRUJ was assessed in neutral position, full pronation, and full supination. Measurements were repeated after implantation of mono- and bi-polar prostheses.RESULTS: Analysis of the distribution of the joint contacts in the compartments showed significant differences after radial head replacement. In comparison to the native joint, after bipolar and monopolar radial head replacement, the physiological shift of the proximal radius was altered.DISCUSSION: The physiological shift of the joint contact of the radial head from anterior to posterior during forearm rotation that was found in the native joint in our cadaver model was not observed after prosthetic replacement. With higher conformity and physiological kinematic of radial head prostheses, possibly lower shear forces and lower contact pressures would be generated.CLINICAL RELEVANCE: The tested radial head prostheses do not replicate the physiological kinematics of the radial head. Further development in the prosthesis design has to be made. The meticulous reconstruction of the annular ligament seems to be of importance to increase joint contact.

AB - PURPOSE: The fitting accuracy of radial head components has been investigated in the capitulo-radial joint, and reduced contact after prosthetic replacement of the radial head has been observed. The kinematics of the proximal radioulnar joint (PRUJ) are affected by radial head arthroplasty as well, but have not yet been investigated in this regard.METHODS: The elbow joints of 60 upper extremities of formalin-fixed body donors were disarticulated to obtain a good view of the PRUJ. Each specimen was mounted on the examining table and radial head position in the native PRUJ was assessed in neutral position, full pronation, and full supination. Measurements were repeated after implantation of mono- and bi-polar prostheses.RESULTS: Analysis of the distribution of the joint contacts in the compartments showed significant differences after radial head replacement. In comparison to the native joint, after bipolar and monopolar radial head replacement, the physiological shift of the proximal radius was altered.DISCUSSION: The physiological shift of the joint contact of the radial head from anterior to posterior during forearm rotation that was found in the native joint in our cadaver model was not observed after prosthetic replacement. With higher conformity and physiological kinematic of radial head prostheses, possibly lower shear forces and lower contact pressures would be generated.CLINICAL RELEVANCE: The tested radial head prostheses do not replicate the physiological kinematics of the radial head. Further development in the prosthesis design has to be made. The meticulous reconstruction of the annular ligament seems to be of importance to increase joint contact.

KW - Aged

KW - Aged, 80 and over

KW - Arthroplasty, Replacement, Elbow/methods

KW - Biomechanical Phenomena

KW - Cadaver

KW - Dissection

KW - Elbow Joint/anatomy & histology

KW - Elbow Prosthesis

KW - Female

KW - Humans

KW - Male

KW - Prosthesis Design

KW - Prosthesis Implantation/methods

KW - Radius/anatomy & histology

KW - Range of Motion, Articular/physiology

KW - Risk Factors

KW - Sensitivity and Specificity

U2 - 10.1007/s00276-014-1407-2

DO - 10.1007/s00276-014-1407-2

M3 - SCORING: Journal article

C2 - 25542245

VL - 37

SP - 743

EP - 747

JO - SURG RADIOL ANAT

JF - SURG RADIOL ANAT

SN - 0930-1038

IS - 7

ER -