Volker Musahl1, Jeremy Burnham2, Jayson Lian2,3, Adam Popchak2, Eleonor Svantesson4,5, Ryosuke Kuroda6, Stefano Zaffagnini7, Kristian Samuelsson4,5. 1. UPMC Center for Sports Medicine, Department of Orthopaedic Surgery, University of Pittsburgh, 3200 S Water Street, Pittsburgh, PA, 15203, USA. musahlv@upmc.edu. 2. UPMC Center for Sports Medicine, Department of Orthopaedic Surgery, University of Pittsburgh, 3200 S Water Street, Pittsburgh, PA, 15203, USA. 3. Albert Einstein College of Medicine, Bronx, NY, 10461, USA. 4. Department of Orthopaedics, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden. 5. Department of Orthopedics, Sahlgrenska University Hospital, Mölndal, Sweden. 6. Department of Orthopaedic Surgery, Kobe University, Kobe, Japan. 7. Laboratorio di Biomeccanica e Innovazione Tecnologica, Istituto Ortopedico Rizzoli, Bologna, Italy.
Abstract
PURPOSE: Lateral compartment acceleration and translation have been used to quantify rotatory knee laxity in the setting of anterior cruciate ligament (ACL) injury; however, their relationship remains elusive. The purpose of this study was to examine the correlation between lateral compartment acceleration and translation during pivot shift testing. It was hypothesized that a correlation would exist in ACL-injured and uninjured knees, irrespective of sex, but would be greatest in knees with combined ACL and lateral meniscus tear. METHODS: Seventy-seven patients (34 females, 25.2 ± 9.0 years) undergoing primary single-bundle ACL reconstruction were prospectively enrolled in a 2-year study across four international centers. Patients underwent preoperative examination under anesthesia of the injured and uninjured knee using Image Analysis software and surface mounted accelerometer. RESULTS: A moderate correlation between lateral compartment acceleration and translation was observed in ACL-injured knees [ρ = 0.36, p < 0.05), but not in uninjured knees (ρ = 0.17, not significant (n.s.)]. A moderate correlation between acceleration and translation was demonstrated in ACL-injured knees with lateral meniscus tears (ρ = 0.53, p < 0.05), but not in knees with isolated ACL-injury (ρ = 0.32, n.s.), ACL and medial meniscus tears (ρ = 0.14, n.s.), or ACL and combined medial and lateral meniscus tears (ρ = 0.40, n.s.). A moderate correlation between acceleration and translation was seen in males (ρ = 0.51, p < 0.05), but not in females (ρ = 0.21, n.s.). Largest correlations were observed in males with ACL and lateral meniscus tears (ρ = 0.75, p < 0.05). CONCLUSION: Lateral compartment acceleration and translation were moderately correlated in ACL-injured knees, but largely correlated in males with combined ACL and lateral meniscus tears. ACL and lateral meniscus injury in males might, therefore, be suspected when both lateral compartment acceleration and translation are elevated. Surgeons should have a greater degree of suspicion for high-grade rotatory knee laxity in ACL-injured males with concomitant lateral meniscus tears. Future studies should investigate how these two distinct components of rotatory knee laxity-lateral compartment acceleration and translation-are correlated with patient outcomes and affected by ACL surgery. LEVEL OF EVIDENCE: Prospective cohort study; Level of evidence II.
PURPOSE: Lateral compartment acceleration and translation have been used to quantify rotatory knee laxity in the setting of anterior cruciate ligament (ACL) injury; however, their relationship remains elusive. The purpose of this study was to examine the correlation between lateral compartment acceleration and translation during pivot shift testing. It was hypothesized that a correlation would exist in ACL-injured and uninjured knees, irrespective of sex, but would be greatest in knees with combined ACL and lateral meniscus tear. METHODS: Seventy-seven patients (34 females, 25.2 ± 9.0 years) undergoing primary single-bundle ACL reconstruction were prospectively enrolled in a 2-year study across four international centers. Patients underwent preoperative examination under anesthesia of the injured and uninjured knee using Image Analysis software and surface mounted accelerometer. RESULTS: A moderate correlation between lateral compartment acceleration and translation was observed in ACL-injured knees [ρ = 0.36, p < 0.05), but not in uninjured knees (ρ = 0.17, not significant (n.s.)]. A moderate correlation between acceleration and translation was demonstrated in ACL-injured knees with lateral meniscus tears (ρ = 0.53, p < 0.05), but not in knees with isolated ACL-injury (ρ = 0.32, n.s.), ACL and medial meniscus tears (ρ = 0.14, n.s.), or ACL and combined medial and lateral meniscus tears (ρ = 0.40, n.s.). A moderate correlation between acceleration and translation was seen in males (ρ = 0.51, p < 0.05), but not in females (ρ = 0.21, n.s.). Largest correlations were observed in males with ACL and lateral meniscus tears (ρ = 0.75, p < 0.05). CONCLUSION: Lateral compartment acceleration and translation were moderately correlated in ACL-injured knees, but largely correlated in males with combined ACL and lateral meniscus tears. ACL and lateral meniscus injury in males might, therefore, be suspected when both lateral compartment acceleration and translation are elevated. Surgeons should have a greater degree of suspicion for high-grade rotatory knee laxity in ACL-injured males with concomitant lateral meniscus tears. Future studies should investigate how these two distinct components of rotatory knee laxity-lateral compartment acceleration and translation-are correlated with patient outcomes and affected by ACL surgery. LEVEL OF EVIDENCE: Prospective cohort study; Level of evidence II.
Authors: Ata A Rahnemai-Azar; Ermias S Abebe; Paul Johnson; Joseph Labrum; Freddie H Fu; James J Irrgang; Kristian Samuelsson; Volker Musahl Journal: Knee Surg Sports Traumatol Arthrosc Date: 2016-05-06 Impact factor: 4.342
Authors: Volker Musahl; Ata A Rahnemai-Azar; Joanna Costello; Justin W Arner; Freddie H Fu; Yuichi Hoshino; Nicola Lopomo; Kristian Samuelsson; James J Irrgang Journal: Am J Sports Med Date: 2016-08-09 Impact factor: 6.202
Authors: Volker Musahl; Chad Griffith; James J Irrgang; Yuichi Hoshino; Ryosuke Kuroda; Nicola Lopomo; Stefano Zaffagnini; Kristian Samuelsson; Jon Karlsson Journal: Am J Sports Med Date: 2016-07-01 Impact factor: 6.202
Authors: Theresa Diermeier; Sean J Meredith; James J Irrgang; Stefano Zaffagnini; Ryosuke Kuroda; Yuichi Hochino; Kristian Samuelsson; Clair Nicole Smith; Adam Popchak; Volker Musahl; Andrew Sheean; Jeremy M Burnham; Jayson Lian; Clair Smith; Adam Popchak; Elmar Herbst; Thomas Pfeiffer; Paulo Araujo; Alicia Oostdyk; Daniel Guenther; Bruno Ohashi; James J Irrgang; Freddie H Fu; Kouki Nagamune; Masahiro Kurosaka; Ryosuke Kuroda; Yuichi Hochino; Alberto Grassi; Giulio Maria Marcheggiani Muccioli; Nicola Lopomo; Cecilia Signorelli; Federico Raggi; Stefano Zaffagnini; Alexandra Horvath; Eleonor Svantesson; Eric Hamrin Senorski; David Sundemo; Haukur Bjoernsson; Mattias Ahlden; Neel Desai; Kristian Samuelsson; Jon Karlsson Journal: Orthop J Sports Med Date: 2020-07-07
Authors: Zeng Li; Mengyuan Li; Yan Du; Mo Zhang; Hai Jiang; Ruiying Zhang; Yuanchen Ma; Qiujian Zheng Journal: BMC Sports Sci Med Rehabil Date: 2022-04-13