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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Radial Head Prosthesis with Interconnected Porosity Showing Low Bone Resorption Around the Stem

by
Valeria Vismara
1,
Enrico Guerra
2,
Riccardo Accetta
3,
Carlo Cardile
4,
Emanuele Boero
5,
Alberto Aliprandi
6,
Marco Porta
6,
Carlo Zaolino
7,
Alessandro Marinelli
2,
Carlo Cazzaniga
4 and
Paolo Arrigoni
7,*
1
Scuola di Specializzazione in Ortopedia e Traumatologia, Università Degli Studi Di Milano, 20122 Milan, Italy
2
Shoulder and Elbow Unit, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
3
IRCCS Orthopaedic Institute Galeazzi, 20161 Milan, Italy
4
ASST-Rhodense Ospedale di Garbagnate Milanese, 20024 Garbagnate Milanese, Italy
5
Orthopaedic and Trauma Unit, Ospedale Camposampiero (Padova), AULSS 6 Euganea, 35012 Camposampiero, Italy
6
Radiology Unit, Zucchi Clinical Institutes Spa, 20900, Monza, Italy
7
Clinica Ortopedica, Azienda Socio Sanitaria Territoriale Centro Specialistico Ortopedico Traumatologico Gaetano Pini-CTO, 20122 Milan, Italy
*
Author to whom correspondence should be addressed.
J. Clin. Med. 2025, 14(15), 5439; https://doi.org/10.3390/jcm14155439 (registering DOI)
Submission received: 20 June 2025 / Revised: 18 July 2025 / Accepted: 27 July 2025 / Published: 1 August 2025
(This article belongs to the Special Issue Trends and Prospects in Shoulder and Elbow Surgery)
Versions Notes

Abstract

Background/Objectives: Radial head arthroplasty is a commonly preferred treatment for complex, unreconstructable radial head fractures. Recent studies have raised the question of whether factors such as bone resorption may be related to failure. This observational, retrospective, multicenter, spontaneous, and non-profit study aims to assess radiological outcomes, focusing on bone resorption around the stem, for radial head replacement using a modular, cementless radial head prosthesis with interconnected porosity. Methods: A series of 42 cases was available for review. Patients underwent radial head arthroplasty using a three-dimensional-printed radial head prosthesis. Patients were eligible for inclusion if they had undergone at least one follow-up between 6 and 15 months post-operatively. A scoring system to detect bone resorption was developed and administered by two independent evaluators. Results: Forty-two patients (14 males, 28 females), with an average age of 59 ± 11 years (range: 39–80 years), were analyzed with a minimum of six months’ and a maximum of 32 months’ follow-up. At follow-up, 50 radiological evaluations were collected, with 29 showing ≤3 mm and 12 showing 3–6 mm resorption around the stem. The average resorption was 3.5 mm ± 2.3. No correlation was found between the extent of resorption and the time of follow-up. The developed scoring system allowed for a high level of correlation between the evaluators’ measurements of bone resorption. Conclusions: Radial head prosthesis with interconnected porosity provided a low stem resorption rate for patients after a radial head fracture at short-to-mid-term follow-up after the definition of a reliable and easy-to-use radiological-based classification approach. (Level of Evidence: Level IV).
Keywords: radial head replacement; radial head trauma; radiological outcomes; bone resorption; 3D-printed radial head prosthesis radial head replacement; radial head trauma; radiological outcomes; bone resorption; 3D-printed radial head prosthesis

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MDPI and ACS Style

Vismara, V.; Guerra, E.; Accetta, R.; Cardile, C.; Boero, E.; Aliprandi, A.; Porta, M.; Zaolino, C.; Marinelli, A.; Cazzaniga, C.; et al. Radial Head Prosthesis with Interconnected Porosity Showing Low Bone Resorption Around the Stem. J. Clin. Med. 2025, 14, 5439. https://doi.org/10.3390/jcm14155439

AMA Style

Vismara V, Guerra E, Accetta R, Cardile C, Boero E, Aliprandi A, Porta M, Zaolino C, Marinelli A, Cazzaniga C, et al. Radial Head Prosthesis with Interconnected Porosity Showing Low Bone Resorption Around the Stem. Journal of Clinical Medicine. 2025; 14(15):5439. https://doi.org/10.3390/jcm14155439

Chicago/Turabian Style

Vismara, Valeria, Enrico Guerra, Riccardo Accetta, Carlo Cardile, Emanuele Boero, Alberto Aliprandi, Marco Porta, Carlo Zaolino, Alessandro Marinelli, Carlo Cazzaniga, and et al. 2025. "Radial Head Prosthesis with Interconnected Porosity Showing Low Bone Resorption Around the Stem" Journal of Clinical Medicine 14, no. 15: 5439. https://doi.org/10.3390/jcm14155439

APA Style

Vismara, V., Guerra, E., Accetta, R., Cardile, C., Boero, E., Aliprandi, A., Porta, M., Zaolino, C., Marinelli, A., Cazzaniga, C., & Arrigoni, P. (2025). Radial Head Prosthesis with Interconnected Porosity Showing Low Bone Resorption Around the Stem. Journal of Clinical Medicine, 14(15), 5439. https://doi.org/10.3390/jcm14155439

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