Review
Orthopedics
F. Matassi, F. Pettinari, F. Frascona, M. Innocenti, R. Civinini
Summary: Total knee arthroplasty (TKA) alignment is a popular topic in the orthopedics arthroplasty literature. Particularly, coronal plane alignment has gained attention as it is crucial for better clinical outcomes. Different alignment techniques have been described, but there is no consensus on the optimal alignment method. This narrative review aims to describe the different types of coronal alignments in TKA, accurately defining the principles and terms.
JOURNAL OF ORTHOPAEDICS AND TRAUMATOLOGY
(2023)
Article
Orthopedics
Jean-Yves Jenny, Florent Baldairon
Summary: The purpose of this study was to analyze and quantify the changes in native coronal alignment of TKA patients according to different alignment goals. The study found that, except for the kinematic alignment technique, the various alignment techniques induced significant changes in the pre-arthritic anatomy of the TKA patients. Surgeons should be aware of these modifications when performing TKA surgery.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2023)
Article
Biotechnology & Applied Microbiology
Jaehun Ro, Du Hyun Ro, Yeokyung Kang, Hyuk-Soo Han, Choongsoo S. Shin
Summary: The study developed and validated a musculoskeletal model of cruciate-retaining total knee arthroplasty, investigating the effects of varus/valgus alignment adjustment and unbalanced medial/lateral ligament laxity during gait. Results indicated that 2 degrees of valgus alignment adjustment or varus alignment with balanced ligament models did not increase contact force or ligament tension.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Medicine, General & Internal
Meagan E. Tibbo, Afton K. Limberg, Kevin I. Perry, Mark W. Pagnano, Michael J. Stuart, Arlen D. Hanssen, Matthew P. Abdel
Summary: Post-operative mechanical axis alignment within 3 degrees of neutral was not associated with improved implant durability, clinical outcomes, or radiographic results at 10 years following primary TKA in a single fixed-bearing TKA design.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Orthopedics
Filippo Migliorini, Joerg Eschweiler, Alice Baroncini, Markus Tingart, Nicola Maffulli
Summary: This meta-analysis compares minimally invasive surgery (MIS) and standard invasive surgery (SIS) for total knee arthroplasty (TKA), showing that MIS has advantages such as shorter hospital stays, less blood loss, faster recovery times, and better knee function scores. However, SIS allows for quicker surgical durations. The analysis concludes that while MIS is encouraged for TKA, it requires technical skill and a long learning curve.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2021)
Article
Medicine, General & Internal
Seong-Chan Kim, Han-Gyeol Choi, Joo-Sung Kim, Tae-Woo Kim, Yong-Seuk Lee
Summary: The study evaluated the effects of correcting lower limb alignment by total knee arthroplasty (TKA) on spinopelvic alignment and identified patients with differences in knee joint between passive motion and standing posture. TKA had a dominant effect on pelvic parameters with little impact on spinal alignment. Patients with anterior stooping or lumbar flat back showed differences between passive knee motion and standing posture, emphasizing the importance of evaluating spinopelvic alignment preoperatively for better prognosis.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Medicine, General & Internal
Ruibo Li, Peng Fu
Summary: The objective of this study was to investigate the effect of preoperative coronal tibiofemoral subluxation (CTFS) on postoperative mechanical alignment in patients undergoing total knee arthroplasty (TKA) for primary knee osteoarthritis (OA) and to investigate whether TKA can correct preoperative CTFS. The results showed that preoperative CTFS does not affect postoperative mechanical alignment, while excellent TKA can correct preoperative CTFS.
Article
Orthopedics
Florian Barbotte, Marc Delord, Nicolas Pujol
Summary: This study compared the hip-knee-ankle (HKA) angle values obtained on X-ray images (LSRs) before and after total knee arthroplasty (TKA) with those obtained during computer-assisted surgery (CAS). The results showed that LSRs overestimate deformity before TKA compared to CAS, and the two methods are not comparable after surgery.
ORTHOPAEDICS & TRAUMATOLOGY-SURGERY & RESEARCH
(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
Seyyed-Morteza Kazemi, Seyyed-Mohammad Qoreishi, Arash Maleki, Reza Minaei-Noshahr, Seyyed-Mohsen Hosseininejad
Summary: This study aimed to assess the correlation between short and full-length X-rays and true coronal alignment after TKA. The results showed a good correlation between short and full-length X-rays, but full-length X-rays could not replace short knee X-rays in evaluating true coronal alignment.
JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH
(2022)
Article
Orthopedics
Juncheng Ge, Philippe Hernigou, Wanshou Guo, Nianfei Zhang, Changquan Liu, Qidong Zhang
Summary: This study compared the early postoperative clinical outcomes and component alignment between the minimally invasive small incision (MISI) technique and conventional minimally invasive surgical (MIS) techniques in unicompartmental knee arthroplasty (UKA). The results showed that the MISI group had faster recovery, shorter hospital stays, and smaller incisions, but longer tourniquet usage time. There were no significant differences in range of motion, pain scores, and knee society scores between the two groups at six months postoperative follow-up, as well as no statistical differences in radiographic measurements.
INTERNATIONAL ORTHOPAEDICS
(2023)
Article
Orthopedics
Michel P. Bonnin, Lucas Beckers, Augustin Leon, Jules Chauveau, Jacobus H. Mueller, Carsten O. Tibesku, Tarik Ait-Si-Selmi
Summary: This study describes a strategy for coronal alignment using a CT-based custom TKA system, and evaluates the agreement between planned and postoperative HKA angle, FMA and TMA.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2022)
Article
Health Care Sciences & Services
Felix Wunderlich, Maheen Azad, Ruben Westphal, Thomas Klonschinski, Patrick Belikan, Philipp Drees, Lukas Eckhard
Summary: This study compared the reconstruction of the hip-knee-ankle angle in total knee arthroplasty using patient-specific cutting guides and implants to off-the-shelf knee replacement system, and found that the former resulted in equally satisfying restoration of the coronal leg alignment with less scattering.
JOURNAL OF PERSONALIZED MEDICINE
(2021)
Article
Orthopedics
Peter Savov, Lars-Rene Tuecking, Henning Windhagen, Jonathan Ehmig, Max Ettinger
Summary: The study aimed to determine the learning curve of robotic-assisted total knee arthroplasty (TKA) to minimize surgery time and evaluate implant alignment accuracy. Results showed that after completing the initial 11 cases, the surgery time for robotic TKA was similar to conventional TKA, with high precision in implant positioning.
ARCHIVES OF ORTHOPAEDIC AND TRAUMA SURGERY
(2021)
Article
Orthopedics
Christopher J. Betzle, Kariline E. Bringe, John Horberg, Joseph T. Moskal, John W. Mann
Summary: This study aimed to compare the coronal alignment changes under different posterior tibial slope using two methods of jig fixation. The results showed that with one pin fixation, the osteotomies shifted into varus, while with two pins fixation, the osteotomies shifted into valgus. There were significant differences in coronal alignment between the two fixation methods, and the slope changes affected the coronal alignment.
JOURNAL OF KNEE SURGERY
(2023)