Effect of Radial Head Implant Shape on Joint Contact Area and Location During Static Loading

Shannon, Hannah L.; Deluce, Simon; Lalone, Emily A.; Willing, Ryan; King, Graham J.W.; Johnson, James A.

doi:10.1016/j.jhsa.2014.12.017

Cited by 26 publications

(23 citation statements)

References 15 publications

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“…Shannon et al. () implied that the radial head implant design might not be important with respect to radiocapitellar joint contact mechanics. They noted that the stem positioning was the reason why contact area was decreased after performing radial head arthroplasty.…”

Section: Discussionmentioning

confidence: 99%

Beveled posteromedial corner of the radial head: a three‐dimensional micro‐computed tomography modeling study

et al. 2017

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The posteromedial quadrant of the radial head is known to be different from the other quadrants. However, the explanation of this unique anatomical feature remains elusive. Hence, this study was designed to address this unique anatomical variance using three-dimensional μCT (micro-computed tomography) analysis. Nine fresh cadaveric radial heads were scanned using μCT. Three-dimensional subchondral bone and cartilage models were rendered. Both models were separated into the four quadrants at both the periphery (rim) and the articulating dish (fovea): anteromedial (AM), posteromedial (PM), posterolateral (PL), and anterolateral (AL). Each quadrant was analyzed in terms of (1) subchondral bone porosity (SBP), (2) mean subchondral bone thickness (MSBT), and (3) mean cartilage thickness (MCT). There was a significant difference between the fovea and the rim in terms of its microarchitectural features. Although within the fovea, the PM quadrant did not differ significantly from the other quadrants, a significant difference was found within the rim. In terms of SBP, PM, AM, PL and AL were calculated as 33, 37, 36 and 35%, respectively. In terms of MSBT, PM, AM, PL and AL were calculated as 0.11, 0.10, 0.09, and 0.09 mm, respectively. In terms of MCT, PM, AM, PL and AL were calculated 1.09, 0.81, 0.84 and 0.83 mm, respectively. The PM corner of the radial head between the 8 and 9 o'clock positions, was beveled. This might explain why the PM quadrant of the rim differed significantly from the other quadrants in terms of its microarchitectural features.

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Section: Discussionmentioning

confidence: 99%

Beveled posteromedial corner of the radial head: a three‐dimensional micro‐computed tomography modeling study

et al. 2017

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“…The influence of radial head arthroplasty (RHA) design on the biomechanics of the radiocapitellar joint (RCJ) has been widely examined . Lanting et al concluded that the diameter of the radial head can differ ±2 mm from the native head, without influencing the contact area and pressure in the RCJ.…”

mentioning

confidence: 99%

“…5,7 The influence of radial head arthroplasty (RHA) design on the biomechanics of the radiocapitellar joint (RCJ) has been widely examined. [8][9][10][11][12][13][14][15][16] Lanting et al 13 concluded that the diameter of the radial head can differ ±2 mm from the native head, without influencing the contact area and pressure in the RCJ. On the contrary, Irish et al 11 showed that an increase in height from the edge to the center of a RHA increased the contact area in the RCJ compared with the native radial head.…”

mentioning

confidence: 99%

Elbow Biomechanics, Radiocapitellar Joint Pressure, and Interosseous Membrane Strain Before and After Radial Head Arthroplasty

Hemmingsen

Thillemann

Elmengaard

et al. 2019

Journal Orthopaedic Research

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Complex radial head fracture and elbow instability can be treated with radial head arthroplasty. Good clinical results have been described after this surgical treatment. However, the revision and complication rate reported in the literature is concerning. This might be due to altered kinematics after radial head arthroplasty. Eight human native elbows were examined with dynamic radiostereometric analysis and compared with a radial head arthroplasty. Translations of the radial head in the x‐, y‐, and z‐directions relative to the humerus and the ulna were measured. The radiocapitellar joint pressure was measured using a pressure sensor. The tension within the interosseous membrane was measured using a custom‐made strain gauge. After radial head arthroplasty, the radial head was displaced approximately 1.8 mm medially and 1.4 mm distally at the starting point. During unloaded flexion motion the difference in all translations between the native radial head and the radial head arthroplasty was less than 1 mm (95% confidence interval [CI] ± 0.5 mm) (p = 0.001). With loading the difference was less than 1.5 mm (95% CI ± 1.5 mm) (p = 0.001). The mean difference in radiocapitellar joint contact pressure was less than 0.30 MPa (95% CI ± 0.40 MPa) (p = 0.001) during unloaded flexion motion. There were only submillimetre kinematic changes and small changes in joint pressure and interosseous membrane tension after the insertion of a radial head arthroplasty in an experimental setting. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 38:510–522, 2020

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“…Folgerichtig reproduzieren die vorhandenen Radiuskopfprothesen die Kinematik des Ellenbogengelenks lediglich bedingt [12,19,20]. Dies führt nicht nur zu einer veränderten Biomechanik hinsichtlich der Stabilität, der Kontaktflä-chen und der Druckverteilung im Radiokapitellargelenk [12,19,20], sondern wirkt sich auch auf die Anatomie des proximalen Radioulnargelenks (PRUG) aus [21].…”

Section: Hintergrund Und Fragestellungunclassified

“…Dies führt nicht nur zu einer veränderten Biomechanik hinsichtlich der Stabilität, der Kontaktflä-chen und der Druckverteilung im Radiokapitellargelenk [12,19,20], sondern wirkt sich auch auf die Anatomie des proximalen Radioulnargelenks (PRUG) aus [21]. Im PRUG artikuliert der Radiuskopf mit der Incisura radialis der Ulna, um Umwendbewegungen im Unterarm zu ermöglichen.…”

Section: Hintergrund Und Fragestellungunclassified

Die Passgenauigkeit monopolarer Radiuskopfprothesen im proximalen Radioulnargelenk

et al. 2015

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Effect of Radial Head Implant Shape on Joint Contact Area and Location During Static Loading

Cited by 26 publications

References 15 publications

Beveled posteromedial corner of the radial head: a three‐dimensional micro‐computed tomography modeling study

Beveled posteromedial corner of the radial head: a three‐dimensional micro‐computed tomography modeling study

Elbow Biomechanics, Radiocapitellar Joint Pressure, and Interosseous Membrane Strain Before and After Radial Head Arthroplasty

Die Passgenauigkeit monopolarer Radiuskopfprothesen im proximalen Radioulnargelenk

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