Search for other papers by Giuseppe Solarino in
Google Scholar
PubMed
Search for other papers by Giovanni Vicenti in
Google Scholar
PubMed
Search for other papers by Massimiliano Carrozzo in
Google Scholar
PubMed
Search for other papers by Guglielmo Ottaviani in
Google Scholar
PubMed
Search for other papers by Biagio Moretti in
Google Scholar
PubMed
Search for other papers by Luigi Zagra in
Google Scholar
PubMed
procedure is not entirely failure-free and new designs are continually developing. 2 , 3 In the late 20th century, a new design has been introduced: the modular neck (MN) femoral stem. It is intended to give the surgeon the possibility to improve
Search for other papers by Michael M. Morlock in
Google Scholar
PubMed
Search for other papers by Robert Hube in
Google Scholar
PubMed
Search for other papers by Georgi Wassilew in
Google Scholar
PubMed
Search for other papers by Felix Prange in
Google Scholar
PubMed
Search for other papers by Gerd Huber in
Google Scholar
PubMed
Search for other papers by Carsten Perka in
Google Scholar
PubMed
axis and poorly under bending loading (as in high offset stems, long heads, large heads, and especially for modular necks and revision stems). Fig. 1 Definition of the head-stem taper connection. The male stem taper geometry is defined by the
Search for other papers by Mattia Loppini in
Google Scholar
PubMed
Search for other papers by Guido Grappiolo in
Google Scholar
PubMed
and the mean rate of stress shielding was 26.9% (5.2% to 66%) in 556 hips. 16 , 22 , 26 , 28 , 31 Metaphyseal total hip arthroplasty (METHA) The METHA (Aesculap) is an uncemented neck-retaining monoblock or modular stem ( Fig. 2 ). It is
Division of Orthopaedics and Trauma Surgery, Cantonal Hospital Winterthur, Winterthur, Switzerland
Search for other papers by Hanna Wellauer in
Google Scholar
PubMed
Search for other papers by Roman Heuberger in
Google Scholar
PubMed
Search for other papers by Emanuel Gautier in
Google Scholar
PubMed
Search for other papers by Moritz Tannast in
Google Scholar
PubMed
Search for other papers by Hubert Steinke in
Google Scholar
PubMed
Faculty of Medicine, University of Berne, Berne, Switzerland
Search for other papers by Peter Wahl in
Google Scholar
PubMed
). The next major innovation came in 1968 by Weber, another Swiss surgeon, who designed a stem with a cylindrical connection for modular heads ( Fig. 3 ) ( 16 , 17 ). Adaptation of heads with different neck lengths provided more options for
IRCCS Humanitas Research Hospital, Via Manzoni 56, Rozzano, Milan, Italy
Fondazione Livio Sciutto Onlus, Campus Savona - Università degli Studi di Genova, Via Magliotto 2, Savona, Italy
Search for other papers by Mattia Loppini in
Google Scholar
PubMed
IRCCS Humanitas Research Hospital, Via Manzoni 56, Rozzano, Milan, Italy
Search for other papers by Francesco Manlio Gambaro in
Google Scholar
PubMed
Search for other papers by Marco di Maio in
Google Scholar
PubMed
Fondazione Livio Sciutto Onlus, Campus Savona - Università degli Studi di Genova, Via Magliotto 2, Savona, Italy
Search for other papers by Guido Grappiolo in
Google Scholar
PubMed
. Therefore, many different surgical strategies have been proposed such as stem with proximal press-fit or extended porous coating ( 6 ), monoblock or modular conical stem ( 7 , 8 ), stem combined with bone grafts ( 9 ), cemented stem, bone impaction grafting
Orthopedics and Traumatology Department, University Emergency Hospital Bucharest, Bucharest, Romania
Search for other papers by Catalin Cirstoiu in
Google Scholar
PubMed
Orthopedics and Traumatology Department, University Emergency Hospital Bucharest, Bucharest, Romania
Search for other papers by Bogdan Cretu in
Google Scholar
PubMed
Orthopedics and Traumatology Department, University Emergency Hospital Bucharest, Bucharest, Romania
Search for other papers by Sergiu Iordache in
Google Scholar
PubMed
Orthopedics and Traumatology Department, University Emergency Hospital Bucharest, Bucharest, Romania
Search for other papers by Mihnea Popa in
Google Scholar
PubMed
Orthopedics and Traumatology Department, University Emergency Hospital Bucharest, Bucharest, Romania
Search for other papers by Bogdan Serban in
Google Scholar
PubMed
Orthopedics and Traumatology Department, University Emergency Hospital Bucharest, Bucharest, Romania
Search for other papers by Adrian Cursaru in
Google Scholar
PubMed
secondary to resection and measurements for the final prosthesis. (C) Postoperative image of the resection reconstruction with a modular tapered, fluted stem. Figure 3 (A) Preoperative anterior-posterior image of the pelvis of a 68-year
Search for other papers by Luigi Zagra in
Google Scholar
PubMed
. Modularity became a major issue in the last few years. Metal-backed liners and stem-head modularity are considered a standard for implant and nowadays no one will go back to monoblock implants out of all-poly cemented cups. Exchangeable necks have been
Search for other papers by Ashoklal Ramavath in
Google Scholar
PubMed
University of Leeds, Leeds, UK
Search for other papers by Jonathan N. Lamb in
Google Scholar
PubMed
Search for other papers by Jeya Palan in
Google Scholar
PubMed
University of Leeds, Leeds, UK
Search for other papers by Hemant G. Pandit in
Google Scholar
PubMed
Search for other papers by Sameer Jain in
Google Scholar
PubMed
to bypass the fracture site by a minimum of 2.5 cortical diameters. These are increasingly available as tapered isthmic fitting stems with modular body, neck and head options to allow greater flexibility when balancing leg lengths and stability. These
Search for other papers by Khaled M. Sarraf in
Google Scholar
PubMed
Search for other papers by Ravi Popat in
Google Scholar
PubMed
Search for other papers by Kathryn L. Kneale in
Google Scholar
PubMed
Search for other papers by Rajarshi Bhattacharya in
Google Scholar
PubMed
Search for other papers by Manoj Ramachandran in
Google Scholar
PubMed
Search for other papers by Pramod Achan in
Google Scholar
PubMed
Search for other papers by Sammy A. Hanna in
Google Scholar
PubMed
trochanter fracture ( n = 1, 0.4%), modular neck fracture ( n = 1, 0.4%) and unexplained pain ( n = 1, 0.4%). Revision rate There were 32 failures in total necessitating revision surgery in the 268 cases (11.9%). Seven hip resurfacings failed
Service de Chirurgie Orthopédique, Clinique Maussins-Nollet, Paris, France
Clinique Nollet, Paris, France
Search for other papers by Alexis Nogier in
Google Scholar
PubMed
Clinique Nollet, Paris, France
Search for other papers by Idriss Tourabaly in
Google Scholar
PubMed
Search for other papers by Sonia Ramos-Pascual in
Google Scholar
PubMed
Search for other papers by Jacobus H. Müller in
Google Scholar
PubMed
Search for other papers by Mo Saffarini in
Google Scholar
PubMed
Search for other papers by Cyril Courtin in
Google Scholar
PubMed
versatility, as most designs are available in a range of sizes, neck lengths and offsets. Custom femoral stems were introduced for selected THA patients, notably those with major anatomical deformities, 2 , 3 for which off-the-shelf implants would not be