Background: The pivot-shift (PS) examination is used to demonstrate knee instability and detect anterior cruciate ligament (ACL) injury. Prior studies using inertial sensors identified the ACL-deficient knee with reasonable accuracy, but none addressed the more difficult problem of using these sensors to determine whether a subject has an ACL deficiency and to correctly assign a PS grade to a patient's knee. Hypothesis: Inertial sensor data recorded during a PS examination can accurately predict ACL deficiency and the PS score assigned by the examining physician. Study Design: Cohort study (diagnosis); Level of evidence, 2. Methods: A total of 32 patients with unilateral ACL deficiency and 29 with intact ACLs in both knees had inertial sensor modules strapped to the tibia and femur of each limb for preoperative PS testing under anesthesia. Support vector machine (SVM) methods assessed PS grades on the basis of these data, with the examiner's clinical grading shift used as ground truth. A fusion of regression and SVM classification techniques diagnosed ACL deficiency. Results: The clinically determined PS grades of all 122 knees were as follows: 0 (n = 69), +1 (n = 23), +2 (n = 27), and +3 (n = 3). The SVM classification analysis was 77% accurate in correctly classifying these grades, with 98% of computed PS grades falling within 1 grade of the clinically determined value. The system fusion algorithm diagnosed ACL deficiency in an individual with an overall accuracy of 97%. This method yielded 6% false negatives and 0% false positives. Conclusion: This study used inertial sensor technology with SVM algorithms to accurately determine clinically assigned PS grades in ACL-intact and ACL-deficient knees. By extending the assessment to a separate group of patients without ACL injury, the inertial sensor data demonstrated highly accurate diagnosis of ACL deficiency.
机构:
Kobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Kuroda, Ryosuke
;
Kubo, Seiji
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Kubo, Seiji
;
Fujita, Norifumi
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Fujita, Norifumi
;
Tei, Katsumasa
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Tei, Katsumasa
;
Nishimoto, Koji
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Nishimoto, Koji
;
Hoshino, Yuichi
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Hoshino, Yuichi
;
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机构:
Matsushita, Takehiko
;
Matsumoto, Tomoyuki
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Matsumoto, Tomoyuki
;
Nagamune, Koki
论文数: 0引用数: 0
h-index: 0
机构:
Univ Fukui, Grad Sch Engn, Fukui 910, JapanKobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Nagamune, Koki
;
Kurosaka, Masahiro
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
机构:
Kobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Hoshino, Yuichi
;
Kuroda, Ryosuke
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Kuroda, Ryosuke
;
Nagamune, Kouki
论文数: 0引用数: 0
h-index: 0
机构:
Univ Fukui, Grad Sch Engn, Dept Human & Artificial Intelligent Syst, Fukui 910, JapanKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Nagamune, Kouki
;
Araki, Daisuke
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Araki, Daisuke
;
Kubo, Seiji
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Kubo, Seiji
;
Yamaguchi, Motoi
论文数: 0引用数: 0
h-index: 0
机构:
Meiwa Hosp, Dept Orthopaed Surg, Nishinomiya, Hyogo, JapanKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Yamaguchi, Motoi
;
Kurosaka, Masahiro
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
机构:
Kobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Univ Pittsburgh, Dept Orthopaed Surg, Pittsburgh, PA USAKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Hoshino, Yuichi
;
Araujo, Paulo
论文数: 0引用数: 0
h-index: 0
机构:
Univ Pittsburgh, Dept Orthopaed Surg, Pittsburgh, PA USAKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Araujo, Paulo
;
Ahlden, Mattias
论文数: 0引用数: 0
h-index: 0
机构:
Sahlgrenska Univ, Dept Orthopaed, Gothenburg, SwedenKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Ahlden, Mattias
;
Moore, Charity G.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Pittsburgh, Ctr Res Hlth Care, Pittsburgh, PA USAKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Moore, Charity G.
;
Kuroda, Ryosuke
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Kuroda, Ryosuke
;
Zaffagnini, Stefano
论文数: 0引用数: 0
h-index: 0
机构:
Ist Ortoped Rizzoli, Lab Biomeccan & Innovaz Tecnol, Bologna, ItalyKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Zaffagnini, Stefano
;
Karlsson, Jon
论文数: 0引用数: 0
h-index: 0
机构:
Sahlgrenska Univ, Dept Orthopaed, Gothenburg, SwedenKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Karlsson, Jon
;
Fu, Freddie H.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Pittsburgh, Dept Orthopaed Surg, Pittsburgh, PA USAKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Fu, Freddie H.
;
Musahl, Volker
论文数: 0引用数: 0
h-index: 0
机构:
Univ Pittsburgh, Dept Orthopaed Surg, Pittsburgh, PA USAKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
机构:
Kobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Kuroda, Ryosuke
;
Kubo, Seiji
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Kubo, Seiji
;
Fujita, Norifumi
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Fujita, Norifumi
;
Tei, Katsumasa
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Tei, Katsumasa
;
Nishimoto, Koji
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Nishimoto, Koji
;
Hoshino, Yuichi
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Hoshino, Yuichi
;
论文数: 引用数:
h-index:
机构:
Matsushita, Takehiko
;
Matsumoto, Tomoyuki
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Matsumoto, Tomoyuki
;
Nagamune, Koki
论文数: 0引用数: 0
h-index: 0
机构:
Univ Fukui, Grad Sch Engn, Fukui 910, JapanKobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Nagamune, Koki
;
Kurosaka, Masahiro
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Grad Sch Med, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
机构:
Kobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Hoshino, Yuichi
;
Kuroda, Ryosuke
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Kuroda, Ryosuke
;
Nagamune, Kouki
论文数: 0引用数: 0
h-index: 0
机构:
Univ Fukui, Grad Sch Engn, Dept Human & Artificial Intelligent Syst, Fukui 910, JapanKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Nagamune, Kouki
;
Araki, Daisuke
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Araki, Daisuke
;
Kubo, Seiji
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Kubo, Seiji
;
Yamaguchi, Motoi
论文数: 0引用数: 0
h-index: 0
机构:
Meiwa Hosp, Dept Orthopaed Surg, Nishinomiya, Hyogo, JapanKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Yamaguchi, Motoi
;
Kurosaka, Masahiro
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
机构:
Kobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Univ Pittsburgh, Dept Orthopaed Surg, Pittsburgh, PA USAKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Hoshino, Yuichi
;
Araujo, Paulo
论文数: 0引用数: 0
h-index: 0
机构:
Univ Pittsburgh, Dept Orthopaed Surg, Pittsburgh, PA USAKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Araujo, Paulo
;
Ahlden, Mattias
论文数: 0引用数: 0
h-index: 0
机构:
Sahlgrenska Univ, Dept Orthopaed, Gothenburg, SwedenKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Ahlden, Mattias
;
Moore, Charity G.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Pittsburgh, Ctr Res Hlth Care, Pittsburgh, PA USAKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Moore, Charity G.
;
Kuroda, Ryosuke
论文数: 0引用数: 0
h-index: 0
机构:
Kobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, JapanKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Kuroda, Ryosuke
;
Zaffagnini, Stefano
论文数: 0引用数: 0
h-index: 0
机构:
Ist Ortoped Rizzoli, Lab Biomeccan & Innovaz Tecnol, Bologna, ItalyKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Zaffagnini, Stefano
;
Karlsson, Jon
论文数: 0引用数: 0
h-index: 0
机构:
Sahlgrenska Univ, Dept Orthopaed, Gothenburg, SwedenKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Karlsson, Jon
;
Fu, Freddie H.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Pittsburgh, Dept Orthopaed Surg, Pittsburgh, PA USAKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan
Fu, Freddie H.
;
Musahl, Volker
论文数: 0引用数: 0
h-index: 0
机构:
Univ Pittsburgh, Dept Orthopaed Surg, Pittsburgh, PA USAKobe Univ, Dept Orthopaed Surg, Chuo Ku, Kobe, Hyogo 6500017, Japan