Article
Orthopedics
Michitaka Kato, Hideki Warashina, Shingo Mitamura, Akito Kataoka
Summary: This study compared the clinical outcomes of medial-pivot-based and posterior-stabilised total knee arthroplasty based on anterior translation and clinical scores. The results showed that the medial-pivot group had a shorter anterior translation distance, lower pain scores, and better postoperative function compared to the posterior-stabilised group.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2022)
Article
Orthopedics
Justin S. Chang, Babar Kayani, Peter D. Moriarty, Jenni E. Tahmassebi, Fares S. Haddad
Summary: The study found that there was no significant difference in postoperative range of motion and patient-reported outcome measures between patients undergoing MP-TKA and PS-TKA. Both types of knee arthroplasty designs had excellent results with comparable functional outcomes at the 2-year follow-up. There were also no differences identified in postoperative limb alignment or complications.
JOURNAL OF ARTHROPLASTY
(2021)
Article
Orthopedics
Shigeru Takagi, J. David Blaha, Tomoharu Mochizuki
Summary: The study aimed to assess the clinical outcomes of revision total knee arthroplasty (TKA) using a medial-pivot implant, particularly in terms of stability and anterior knee pain. Results showed that revision TKA with the medial-pivot implant lowered the joint line and positioned the tibia anteriorly compared to primary TKA. Furthermore, medial pivot revision TKA significantly improved AP stability. Therefore, revision TKA using a medial-pivot design can improve stability and anterior knee pain.
JOURNAL OF ARTHROPLASTY
(2023)
Article
Medicine, General & Internal
Corrado Sosio, Nicolo Rossi, Paolo Sirtori, Ricardo Ciliberto, Michele Davide Maria Lombardo, Giuseppe Michele Peretti, Laura Mangiavini
Summary: The combination of kinematic alignment and a medial pivot TKA implant allows for fast recovery and good clinical and functional outcomes for at least 2 years of follow-up, independent of final limb alignment.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Biotechnology & Applied Microbiology
Jiaqi Tan, Diyang Zou, Xianlong Zhang, Nan Zheng, Yuqi Pan, Zhi Ling, Tsung-Yuan Tsai, Yunsu Chen
Summary: This study investigated the patient satisfaction and knee kinematics of MP and PS prostheses in Chinese patients during gait activity. It found comparable satisfaction levels between the two groups, with slight differences in knee kinematics during walking.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Orthopedics
Jean-Yves Jenny, Michel Bercovy, Alain Cazenave, Thierry Gaillard, Frederic Chatain, Brigitt e Jolles, Jean-Louis Rouvillain, Dominique Saragaglia
Summary: The study aimed to evaluate the long-term outcomes of mobile bearing total knee arthroplasty (TKA) and compare the survival rates of medial pivot axis (MPA) and central pivot axis (CPA) TKAs. The results indicated that there was no significant difference in clinical outcomes or survival rates between MPA and CPA TKAs over a 10 to 15-year period.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2021)
Article
Orthopedics
Sahil Batra, Rajesh Malhotra, Vijay Kumar, Deep Narayan Srivastava, David Backstein, Hemant Pandit
Summary: This study compared patient satisfaction between MP and PS TKA, finding that patients were more satisfied with MP TKA, likely due to its better replication of natural knee kinematics.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2021)
Article
Orthopedics
Shuai Xiang, Yingzhen Wang, Chengyu Lv, Changyao Wang, Haining Zhang
Summary: For the MP designs, the intermediate clinical outcomes are good to excellent, and the mid-term survivorship, related to reasons other than infection, is also satisfactory.
INTERNATIONAL ORTHOPAEDICS
(2021)
Article
Orthopedics
Antonio Klasan, Mei Lin Tay, Chris Frampton, Simon William Young
Summary: Surgeons with higher medial UKA usage have lower UKA revision rates but higher TKA revision rates. Overall, surgeons performing 1-5% UKA had the lowest TKA and combined UKA + TKA revision rates. However, there was no significant difference in OKS scores between different UKA usage groups.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2022)
Review
Medicine, General & Internal
Xuedong Sun, Xiaopeng Gao, Xiaohui Sun, Zheng Su
Summary: The meta-analysis showed no significant difference in clinical and radiographic outcomes between medial-pivot and posterior-stabilized total knee arthroplasties. Surgeons should be aware that the type of implant is not a decisive factor for successful operation.
Article
Orthopedics
Zhen Wang, Yu-qing Zhang, Chang-rong Ding, Ying-zhen Wang, Hao Xu
Summary: The study systematically evaluated the patellofemoral joint design of medial pivot prosthesis and found that it achieved better outcomes in terms of Kujala scores and range of motion compared to the conventional posterior-stabilized prosthesis. The medial pivot prosthesis also showed improvement in patellar tilt and shift, with a lower incidence of postoperative complications such as patellar clunk or crepitus.
ORTHOPAEDIC SURGERY
(2021)
Article
Orthopedics
Arata Nakajima, Masato Sonobe, Yorikazu Akatsu, Manabu Yamada, Keiichiro Yamamoto, Junya Saito, Masaki Norimoto, Keita Koyama, Shinji Taniguchi, Hiroshi Takahashi, Yasuchika Aoki, Toru Suguro, Koichi Nakagawa
Summary: This study found that the coronal positional relation between the femur and tibia is altered after mechanically aligned TKA using the medial pivot design, which may lead to ligament imbalance. The lateral shift of the femoral condyle is greater in males than females and is most strongly correlated with the medial proximal tibial angle (MPTA). Patients receiving larger component sizes are more likely to shift laterally compared to those receiving smaller component sizes.
JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH
(2022)
Article
Orthopedics
Hideki Ueyama, Narihiro Kanemoto, Yukihide Minoda, Nobuo Yamamoto, Yoshiki Taniguchi, Hiroaki Nakamura
Summary: This study aimed to compare clinical results of cruciate-substituting and cruciate-retaining medial pivot total knee arthroplasty over a 10-year follow-up, and found that there were no significant differences in joint awareness, survival rates, and other clinical outcomes between the two groups.
JOURNAL OF ARTHROPLASTY
(2022)
Review
Medicine, General & Internal
Wazzan Al Juhani, Mohammed S. Alwhaid, Alhanouf M. Almuqbel, Alanoud A. Alshathri, Salem D. Almatrafi, Mohammed Alsalman, Husam Altahan
Summary: MP-TKA has been shown to significantly improve pain, symptoms, and activities of daily living postoperatively, with relatively short time until ambulation and length of hospital stay, as well as a low incidence of postoperative and radiological complications.
CUREUS JOURNAL OF MEDICAL SCIENCE
(2021)
Article
Engineering, Biomedical
Ryota Yamagami, Hiroshi Inui, Shuji Taketomi, Kenichi Kono, Kohei Kawaguchi, Shin Sameshima, Tomofumi Kage, Takahiro Arakawa, Sakae Tanaka
Summary: This study aimed to investigate the rotational motion of medial-pivot type total knee arthroplasty in valgus knees. The results showed that both valgus and varus knees displayed external femoral rotation during knee flexion postoperatively. This finding has important implications for the clinical effectiveness of the surgery.
CLINICAL BIOMECHANICS
(2023)
Article
Orthopedics
C. Lowry Barnes, David DeBoer, R. Scott Corpe, Satya Nambu, Michael Carroll, Irina Timmerman
JOURNAL OF ARTHROPLASTY
(2008)
Proceedings Paper
Engineering, Biomedical
Satya Nambu, Irina Timmerman
BEYOND THE IMPLANT: RETRIEVAL ANALYSIS METHODS FOR IMPLANT SURVEILLANCE
(2018)
Article
Engineering, Biomedical
SN Nambu, G Lewis
BIO-MEDICAL MATERIALS AND ENGINEERING
(2004)
