caa a22 4500 605458537 CHVBK 20210128100229.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s00167-014-3306-9 doi (NATIONALLICENCE)springer-10.1007/s00167-014-3306-9 In vivo length change patterns of the medial and lateral collateral ligaments along the flexion path of the knee [Elektronische Daten] [Ali Hosseini, Wei Qi, Tsung-Yuan Tsai, Yujie Liu, Harry Rubash, Guoan Li] Purpose: The knowledge of the function of the collateral ligaments—i.e., superficial medial collateral ligament (sMCL), deep medial collateral ligament (dMCL) and lateral collateral ligament (LCL)—in the entire range of knee flexion is important for soft tissue balance during total knee arthroplasty (TKA). The objective of this study was to investigate the length changes of different portions (anterior, middle and posterior) of the sMCL, dMCL and LCL during in vivo weightbearing flexion from full extension to maximal knee flexion. Methods: Using a dual fluoroscopic imaging system, eight healthy knees were imaged while performing a lunge from full extension to maximal flexion. The length changes of each portion of the collateral ligaments were measured along the flexion path of the knee. Results: All anterior portions of the collateral ligaments were shown to have increasing length with flexion except that of the sMCL, which showed a reduction in length at high flexion. The middle portions showed minimal change in lengths except that of the sMCL, which showed a consistent reduction in length with flexion. All posterior portions showed reduction in lengths with flexion. Conclusions: These data indicated that every portion of the ligaments may play important roles in knee stability at different knee flexion range. The soft tissue releasing during TKA may need to consider the function of the ligament portions along the entire flexion path including maximum flexion. Level of evidence: III. European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA), 2014 In vivo length change pattern nationallicence Medial collateral ligament nationallicence Lateral collateral ligament nationallicence Lunge nationallicence Hosseini Ali Bioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, 55 Fruit Street, GRJ 1215, 02114, Boston, MA, USA aut Qi Wei Bioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, 55 Fruit Street, GRJ 1215, 02114, Boston, MA, USA aut Tsai Tsung-Yuan Bioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, 55 Fruit Street, GRJ 1215, 02114, Boston, MA, USA aut Liu Yujie Department of Orthopaedic Surgery, Chinese PLA General Hospital, 28 Fuxing Road, 100853, Beijing, China aut Rubash Harry Bioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, 55 Fruit Street, GRJ 1215, 02114, Boston, MA, USA aut Li Guoan Bioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, 55 Fruit Street, GRJ 1215, 02114, Boston, MA, USA aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/10(2015-10-01), 3055-3061 0942-2056 23:10<3055 2015 23 167 https://doi.org/10.1007/s00167-014-3306-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00167-014-3306-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hosseini Ali Bioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, 55 Fruit Street, GRJ 1215, 02114, Boston, MA, USA aut NATIONALLICENCE 700 1- Qi Wei Bioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, 55 Fruit Street, GRJ 1215, 02114, Boston, MA, USA aut NATIONALLICENCE 700 1- Tsai Tsung-Yuan Bioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, 55 Fruit Street, GRJ 1215, 02114, Boston, MA, USA aut NATIONALLICENCE 700 1- Liu Yujie Department of Orthopaedic Surgery, Chinese PLA General Hospital, 28 Fuxing Road, 100853, Beijing, China aut NATIONALLICENCE 700 1- Rubash Harry Bioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, 55 Fruit Street, GRJ 1215, 02114, Boston, MA, USA aut NATIONALLICENCE 700 1- Li Guoan Bioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, 55 Fruit Street, GRJ 1215, 02114, Boston, MA, USA aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/10(2015-10-01), 3055-3061 0942-2056 23:10<3055 2015 23 167