Article
Orthopedics
Nathanael D. Heckmann, Joseph K. Antonios, Xiao T. Chen, Hyunwoo P. Kang, Brian C. Chung, Amit S. Piple, Alexander B. Christ, Paul K. Gilbert
Summary: This study evaluated the mid-term survivorship and patient-reported outcomes of robotic-assisted lateral unicompartmental knee arthroplasty (UKA). The results demonstrated high survivorship and excellent patient satisfaction with robotic-assisted lateral UKA, even in patients who did not meet classic indications.
JOURNAL OF ARTHROPLASTY
(2022)
Article
Health Care Sciences & Services
Jobe Shatrov, Constant Foissey, Moussa Kafelov, Cecile Batailler, Stanislas Gunst, Elvire Servien, Sebastien Lustig
Summary: Functional alignment (FA) is a novel philosophy in total knee arthroplasty (TKA) that respects individual bony and soft tissue phenotypes within defined limits. This paper focuses on describing the rationale and technique of FA in the valgus morphotype using an image-based robotic platform. The principles for valgus phenotype involve personalized pre-operative planning, restoration of native coronal alignment, dynamic sagittal alignment, matching implant sizing, and achieving defined soft tissue laxity through implant manipulation. FA aims to restore constitutional alignment and balance soft tissue laxity by considering individual anatomy and variations within predefined boundaries.
JOURNAL OF PERSONALIZED MEDICINE
(2023)
Article
Orthopedics
LiMing Liu, Kai Lei, Xin Chen, DeJie Fu, Pengfei Yang, Liu Yang, Lin Guo
Summary: This study investigated the relationship between femoral torsion angle (FTA) and femoral bowing angle (FBA) in a southern Chinese population. The results showed that increased FTA led to a greater lateral FBA. This finding has implications for orthopedic surgery, total knee arthroplasty, and patellofemoral pressure distribution.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2023)
Article
Orthopedics
Liming Liu, Kai Lei, Lin Guo, Xin Chen, Pengfei Yang, Dejie Fu, Ran Xiong, Liu Yang
Summary: This study aimed to investigate the relationship between the orientation of sTEA and femoral bowing angle and posterior condylar line using three-dimensional CT reconstruction models. It was found that as the lateral femoral bowing increases, the orientation of sTEA becomes more varus, regardless of whether the knee is varus or valgus.
ORTHOPAEDIC SURGERY
(2022)
Article
Health Care Sciences & Services
Yaron Bar-Ziv, Eran Beit Ner, Konstantin Lamykin, Ahmad Essa, Ron Gilat, Gilad Livshits, Noam Shohat, Yiftah Beer
Summary: This retrospective study analyzed the outcomes of kinematic alignment total knee arthroplasty (KA-TKA) in valgus knees and compared them to non-valgus knees. The results showed that KA-TKA was effective in relieving pain and improving function in both groups, with slightly better outcomes in the non-valgus group.
JOURNAL OF PERSONALIZED MEDICINE
(2022)
Review
Medicine, General & Internal
Eugenio Cammisa, Iacopo Sassoli, Matteo La Verde, Stefano Fratini, Vito Gaetano Rinaldi, Giada Lullini, Vittorio Vaccari, Stefano Zaffagnini, Giulio Maria Marcheggiani Muccioli
Summary: This review discusses the outcomes of bilateral knee arthroplasty in patients with windswept deformity (WSD). The results show that knee replacement surgery improves knee function and reduces axial deviation in both valgus and varus knees. Unicompartmental knee arthroplasty (UKA) allows for limited axial correction, while kinematic alignment (KA) provides similar results in both knees. The choice of implant is important for functional outcomes.
JOURNAL OF CLINICAL MEDICINE
(2022)
Article
Orthopedics
Julien Chapleau, Bradley S. Lambert, Thomas C. Sullivan, Terry A. Clyburn, Stephen J. Incavo
Summary: The study found that the nature and magnitude of alignment correction during primary total knee arthroplasty (TKA) may impact periarticular bone mineral density (BMD), especially in patients with alignment malfunctions, significant BMD changes can occur within 6 months postoperatively.
JOURNAL OF ARTHROPLASTY
(2021)
Article
Orthopedics
Yasuhiko Kokubu, Shinya Kawahara, Satoshi Hamai, Yukio Akasaki, Hidetoshi Tsushima, Kenta Momii, Yasuharu Nakashima
Summary: This study investigated the effects of whole-leg malrotation and knee flexion contracture on the distal femoral valgus angle, with a specific focus on the additional effect of coronal or sagittal femoral shaft bowing.
BMC MUSCULOSKELETAL DISORDERS
(2022)
Article
Orthopedics
Qianjin Wang, Xiaofeng Zhang, Tianshu Shi, Zhengyuan Bao, Bin Wang, Yao Yao, Dengxian Wu, Zheng Liu, Honggang Cai, Dongyang Chen, Jin Dai, Qing Jiang, Zhihong Xu
Summary: This retrospective study compared the accuracy of postoperative limb alignment using two femoral alignment techniques in patients with severe coronal femoral bowing. The study found that the IM femoral cutting system is imprecise for the coronal alignment in severe lateral bowing of the femur, while the EM cutting system can achieve accurate alignment.
JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH
(2022)
Article
Medicine, General & Internal
Ruei-Shyuan Chien, Cheng-Pang Yang, Chun-Ran Chaung, Chin-Shan Ho, Yi-Sheng Chan
Summary: The study evaluated the radiographic and functional outcomes of arthroscopy-assisted lateral open-wedge distal femur osteotomy (LOWDFO) for patients with lateral compartment osteoarthritis and valgus knees. The results show that this surgical procedure can significantly improve mechanical correction and patient function, with a good treatment outcome.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Orthopedics
Sammy Abdullah ALShammari, Keun Young Choi, In Jun Koh, Man Soo Kim, Yong In
Summary: This study compared the use of patient-specific instrumentation (PSI) and conventional intermedullary (IM) guides for primary total knee arthroplasty (TKA) in patients with severe femoral bowing. The results showed that PSI did not significantly differ from conventional guides in terms of postoperative alignment and rotational alignment of components.
BMC MUSCULOSKELETAL DISORDERS
(2021)
Article
Orthopedics
Ittai Shichman, Erel Ben-Ari, Ethan Sissman, Christian Oakley, Ran Schwarzkopf
Summary: This study aimed to evaluate postoperative changes in the coronal alignment of the ankle joint in patients undergoing total knee arthroplasty (TKA) for different degrees of knee deformity. The study found that there were significant changes in ankle alignment in the group with a valgus correction of 10 degrees or more. However, regardless of the degree of knee deformity correction, TKA did not result in significant changes in the tibiotalar tilt angle. These findings have important implications for assessing candidates for TKA and considering potential causes of postoperative ankle pain.
JOURNAL OF ARTHROPLASTY
(2022)
Article
Orthopedics
Indelli Pier Francesco, Spinello Paolo, Zepeda Karlos, Campi Stefano, Rossi Stefano Marco Paolo, Engl Michael, Papalia Rocco, Benazzo Francesco
Summary: This study evaluated the outcome of treating moderate valgus deformity using a surgical technique and a medially congruent TKA design. The results showed that the use of a medially congruent TKA design yielded good clinical outcomes at 2 years, with no postoperative instability.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2023)
Article
Orthopedics
Atsushi Sato, Hiroshi Takagi, Takayuki Koya, Alejandro A. Espinoza Orias, Koji Kanzaki, Nozomu Inoue
Summary: This study investigates the 3D sagittal femoral alignment in navigation-aided surgery. The measured proximal and distal femoral axis angles (PFA, DFA) provide valuable information for femoral flexion angle decision-making in total knee arthroplasty. The findings contribute to the understanding of femur morphology and its relevance in surgical procedures.
Article
Orthopedics
Tracy L. Kinsey, Christopher D. Melton, Ormonde M. Mahoney
Summary: The removal of posterior osteophytes in total knee arthroplasty (TKA) can help correct alignment deformities and reduce the need for soft-tissue releases or adjustments to planned bone resection. Studies on 57 TKAs showed that posterior osteophyte volume is correlated with the severity of deformity, and removal of osteophytes can restore functional alignment to a neutral position.
JOURNAL OF ARTHROPLASTY
(2023)