Article
Orthopedics
Nithin C. Reddy, Richard N. Chang, Heather A. Prentice, Elizabeth W. Paxton, Matthew P. Kelly, Monti Khatod
Summary: This study compared the effectiveness of two different geometric designs for total hip arthroplasty (THA). The results showed that compared to double-wedge designs, single-wedge designs were more prone to revision due to aseptic loosening. Therefore, femoral stem geometry should be considered when selecting a cementless femoral implant.
JOURNAL OF ARTHROPLASTY
(2023)
Article
Orthopedics
Rajkishen Narayanan, Ameer M. Elbuluk, Kevin K. Chen, Nima Eftekhary, Joseph D. Zuckerman, Ajit J. Deshmukh
Summary: This study examined the impact of proximal-femoral morphology and stem alignment on clinical outcomes after cementless THA. The majority of stems did not show subsidence, with only a small percentage requiring revision surgery. Alignment did not significantly affect outcomes, but CFI was associated with intraoperative calcar fractures. More research into femoral morphologies, such as GT overhang and FNS, is warranted to improve results related to cementless THA.
Article
Orthopedics
Satoshi Ikemura, Goro Motomura, Satoshi Hamai, Masanori Fujii, Shinya Kawahara, Taishi Sato, Daisuke Hara, Kyohei Shiomoto, Yasuharu Nakashima
Summary: This study compared the degree of stem subsidence between two different femoral component designs in Dorr type C femurs after cementless total hip arthroplasty. The results showed that the tapered wedge stem was more suitable than the fit-and-fill stem to avoid early postoperative subsidence in Dorr type C femurs.
JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH
(2022)
Article
Orthopedics
Vahdet Ucan, Volkan Ezici, Orkhan Aliyev, Gokcer Uzer, Ibrahim Tuncay, Fatih Yildiz
Summary: The study compared short and standard-length tapered-wedge femoral stems in single-stage bilateral total hip arthroplasty through a direct anterior approach. Results showed no significant differences between the two groups in terms of surgical outcomes, but the short-stem group had a significantly higher canal fill ratio at the level of the lesser trochanter compared to the standard-length-stem group.
INTERNATIONAL ORTHOPAEDICS
(2021)
Article
Orthopedics
Matthias Luger, Sandra Feldler, Lorenz Pisecky, Antonio Klasan, Tobias Gotterbarm, Clemens Schopper
Summary: Recent studies suggest that cementless short stem total hip arthroplasty (THA) is associated with a lower risk of periprosthetic femoral fractures (PFFs) compared to straight stems. However, the evidence is still inconclusive. Therefore, this retrospective study aimed to compare the rate of PFFs within the first year between cementless short and straight stem THA using propensity score matching.
JOURNAL OF ARTHROPLASTY
(2023)
Article
Orthopedics
Takuji Miyazaki, Tomohiro Shimizu, Hisanori Ohura, Naoyuki Katayama, Norimasa Iwasaki, Daisuke Takahashi
Summary: This study found that primary THA with femoral shortening osteotomy using both cemented and modular stems can provide satisfactory results. However, considering the occurrence of intraoperative fracture and radiographic analysis, the cement stem may have an advantage for patients with bone fragility and deterioration in bone quality.
ARCHIVES OF ORTHOPAEDIC AND TRAUMA SURGERY
(2023)
Article
Medicine, General & Internal
Takashi Maeda, Masaki Nakano, Yukio Nakamura, Takashige Momose, Atsushi Sobajima, Jun Takahashi, Katsuya Nakata, Masashi Nawata
Summary: This study aimed to determine the optimal femoral canal contact regions to reduce stress shielding in cementless short, tapered-wedge stem total hip arthroplasty (THA). Through radiographic and 3D computed tomography analysis, it was found that a mediolateral fit with the most proximedial calcar site restricted fitting was the best for reducing stress shielding.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Orthopedics
Kazuki Oishi, Ryo Inoue, Yuji Yamamoto, Yoshifumi Harada, Eiji Sasaki, Yasuyuki Ishibashi
Summary: This study compared radiographic and digital tomosynthesis assessments of early biological fixation of a cementless stem in primary total hip arthroplasty. It was found that digital tomosynthesis could detect biological fixation earlier than radiography, with fixation potentially occurring within 3 months postoperatively.
JOURNAL OF ARTHROPLASTY
(2021)
Article
Orthopedics
Philipp Kastner, Ivan Zderic, Boyko Gueorguiev, Geoff Richards, Bernhard Schauer, Guenter Hipmair, Tobias Gotterbarm, Clemens Schopper
Summary: This study biomechanically evaluated the effect of a proximal periprosthetic femoral medial wall defect on the stability of a diaphyseal anchored, cementless stem. The results showed that a medial wall defect significantly decreases the axial stability of the stem, but a safe zone remains at loosening rates of about 4 multiples of the body weight.
JOURNAL OF ORTHOPAEDIC RESEARCH
(2023)
Article
Orthopedics
Hope E. Skibicki, Zachary D. Post, Andrew B. Kay, Miranda M. Czymek, Alvin C. Ong, Fabio R. Orozco, Danielle Y. Ponzio
Summary: This study compared the outcomes of patients undergoing revision THA with different types of femoral stems. The results showed that there were no significant differences in clinical and radiographic outcomes, complications, stem subsidence, leg length discrepancy, and HOOS Jr score between the two groups.
JOURNAL OF ARTHROPLASTY
(2021)
Article
Orthopedics
Masanori Fujii, Kenji Kitamura, Satoshi Ikemura, Satoshi Hamai, Goro Motomura, Yasuharu Nakashima
Summary: Pneumatic femoral broaching in total hip arthroplasty has shown to reduce stem subsidence and improve canal fill ratio. Factors such as manual broaching and decreased canal fill ratio 60 mm below the lesser trochanter have been found to affect post-operative stem subsidence. At the latest follow-up, all stems showed stable fixation by bone ingrowth in both groups.
INTERNATIONAL ORTHOPAEDICS
(2022)
Article
Orthopedics
Remy Coulomb, Alexandre Laborde, Vincent Haignere, Francois Bauzou, Philippe Marchand, Pascal Kouyoumdjian
Summary: This study compared the long-term outcomes of anatomical cementless femoral stem positioning in varus versus neutral alignment and found that varus alignment did not affect survivorship, clinical outcomes, or complication rate after an average follow-up of 10 years, despite differences in stem size and filling rate.
ARCHIVES OF ORTHOPAEDIC AND TRAUMA SURGERY
(2023)
Article
Orthopedics
Sho Masuda, Kentaro Iwakiri, Yoichi Ohta, Yukihide Minoda, Akio Kobayashi, Hiroaki Nakamura
Summary: The aim of this study was to assess the relationship between the three-dimensional alignment of short tapered-wedge cementless stems and bone mineral density changes in patients followed up for 5 years after total hip arthroplasty. The results showed a significant negative correlation between varus insertion and a decrease in bone mineral density in zone 7, as well as between flexed insertion and decreases in bone mineral density in zones 2, 3, and 4. The findings highlight the importance of careful observation and treatment selection when using short tapered-wedge cementless stems in THA surgeries.
Article
Orthopedics
David Mevorach, Itay Perets, Alexander Greenberg, Leonid Kandel, Yoav Mattan, Meir Liebergall, Gurion Rivkin
Summary: The aim of this study was to assess the impact of Dorr femoral classification on the accuracy of pre-operative digital templating. The results showed low accuracy in templating for both femoral and acetabular components, and the use of Dorr femoral classification did not improve templating accuracy.
INTERNATIONAL ORTHOPAEDICS
(2022)
Article
Orthopedics
Matthew P. Kelly, Priscilla H. Chan, Heather A. Prentice, Elizabeth W. Paxton, Adrian D. Hinman, Monti Khatod
Summary: The study revealed differences in cause-specific revision risks between hybrid and cementless total hip arthroplasty, depending on patient age and gender. Hybrid THA had a higher risk of loosening revision in females but a lower risk of PPF revision in females over 75 years old. Therefore, hybrid fixation may be beneficial in reducing revision risk for specific patient populations under certain circumstances.
JOURNAL OF ARTHROPLASTY
(2022)
