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
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)
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
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)
Article
Orthopedics
Zunhan Liu, Wei-Nan Zeng, Zhenyu Luo, Enze Zhao, Hao Li, Zongke Zhou
Summary: The study aimed to compare the outcomes of patients who underwent different sequences of ipsilateral total hip arthroplasty (THA) and total knee arthroplasty (TKA). Results showed that patients achieved similar favorable outcomes in clinical scores and survivorship regardless of the sequence of surgeries. Total joint arthroplasty can be performed safely with excellent outcomes in patients with a history of prior ipsilateral THA or TKA.
BMC MUSCULOSKELETAL DISORDERS
(2021)
Article
Orthopedics
Yanfeng Jia, Leilei Zhai, Shiqi Qin, Juncai Xu, Wei Gao, Boxuan Zhang, Xiaofeng Wang, Kezhen Zhou, Zhiwen Sun, Yingzhen Niu, Hongwei Bao, Ran Sun
Summary: This study aimed to investigate the relationship between lower limb alignment and soft tissue balance after total knee arthroplasty (TKA). The results showed that the relaxation of soft tissues around the knee joint changed over time after TKA, but this change did not significantly affect the alignment of the lower limbs.
BMC MUSCULOSKELETAL DISORDERS
(2023)
Article
Orthopedics
Chiara Suardi, Davide Stimolo, Luigi Zanna, Christian Carulli, Matassi Fabrizio, Roberto Civinini, Matteo Innocenti
Summary: The study aimed to determine the major factor contributing to varus osteoarthritic knee and its surgical implications in total knee arthroplasty. The results revealed that proximal tibia deformity was the major contributor to osteoarthritic varus knee alignment, suggesting that correction should primarily be made on the tibia during the surgery.
JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH
(2022)
Article
Health Care Sciences & Services
Yaron Bar Ziv, Ahmad Essa, Konstantin Lamykin, Najib Chacar, Gilad Livshits, Salah Khatib, Yoav Comaya, Noam Shohat
Summary: The study aimed to evaluate the safety and functional outcomes of excessive varus cuts in kinematic alignment total knee arthroplasty. The results showed that unrestricted tibial component cuts in kinematic alignment total knee arthroplasty were safe and efficient in relieving pain and restoring function for at least two years.
JOURNAL OF PERSONALIZED MEDICINE
(2022)
Article
Orthopedics
Naicheng Diao, Fei Yu, Bo Yang, Lifeng Ma, Heyong Yin, Ai Guo
Summary: This study investigated the relationship between changes in hip-knee-ankle (HKA) angle and hindfoot alignment after total knee arthroplasty (TKA) for varus knee osteoarthritis. The results showed that HFA was significantly adjusted by 3 months after TKA, and the change in HFA was weakly correlated with the change in HKA angle, with age impacting this correlation. In patients under 65 years old, there was a greater correlation between changes in HFA and HKA angle, while no correlation was observed in patients above 65 years old.
BMC MUSCULOSKELETAL DISORDERS
(2021)
Article
Orthopedics
Matthew A. Follett, Prerna Arora, William J. Maloney, Stuart B. Goodman, James Huddleston, Derek F. Amanatullah
Summary: The technical differences between simultaneous and staged total knee arthroplasties (TKAs) can affect the clinical and radiographic outcomes. The study found that the second knee in simultaneous TKAs had a higher risk of establishing the mechanical axis outside neutral compared to staged TKAs. Staged TKAs had an increased risk of deep venous thrombosis. There were no significant differences in perioperative complications and range of motion between the two procedures.
JOURNAL OF ARTHROPLASTY
(2022)
Article
Orthopedics
Theofilos Karasavvidis, Cale A. Pagan Moldenhauer, Fares S. Haddad, Michael T. Hirschmann, Mark W. Pagnano, Jonathan M. Vigdorchik
Summary: In an effort to increase patient satisfaction with total knee arthroplasty (TKA), surgeons are gradually moving away from traditional neutral mechanical alignment (MA) towards individualized alignment techniques. This review discusses the differences in alignment techniques for TKA, the concept of knee phenotypes, and comparative studies between MA and individualized alignment. It also provides guidance for surgeons on incorporating individualized alignment into their practice. Alignment and implant positioning are now central to TKA, and a more personalized approach is being explored by surgeons.
JOURNAL OF ARTHROPLASTY
(2023)
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
Kilian Rueckl, Armin Runer, Anna Jungwirth-Weinberger, Maximilian F. Kasparek, Martin Faschingbauer, Friedrich Boettner
Summary: The study found that the degree of valgus deformity and the grade of osteoarthritis do not predict the outcome of total knee arthroplasty in patients with advanced valgus osteoarthritis. Surgery appears to be justified in patients who failed nonoperative treatment, regardless of the degree of deformity.
ARCHIVES OF ORTHOPAEDIC AND TRAUMA SURGERY
(2021)
Article
Orthopedics
Tao Li, Yikai Liu, Chenkai Li, Haining Zhang
Summary: This study compared the clinical outcomes of different surgical approaches for patients with valgus knees. The subvastus with minimal oblique cut approach showed better early recovery and no increase in complications compared to the medial parapatellar approach.
JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH
(2022)