Anterolateral ligament injuries on magnetic resonance imaging and pivot-shift testing for rotational laxity

Carlos M. Barrera, Azael Arizpe, Ross Wodicka, Bryson P. Lesniak, Michael Baraga, Lee Kaplan, Jean Jose

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Maintaining anterolateral rotational stability of the knee requires a complex set of structures, most notably the anterior cruciate ligament. However, lateral knee structures such as the anterolateral ligament (ALL) also play an important role. There has been controversy over the role the ALL plays in an ACL deficient knee to maintain rotational stability. In this study, we examined ACL deficient knees with and without intact ALLs, for rotatory laxity using a pivot shift examination. This was graded using International Knee Document Committee (IKDC) criteria. MRI was used to view the ALL and its status. We found no statistically significant difference in rotational stability of ACL deficient knees, with or without intact ALLs. We did however find a statistically significant association between injury to the ALL and other concomitant lateral structures such as the lateral collateral ligament, biceps femoris tendon, and iliotibial band. This supports that the ALL works in concert with the other lateral structures in the knee and the ACL, to provide rotational stability. This suggests that as an isolated structure, the ALL's contribution to clinical rotational stability is not significant, even in the presence of an ACL tear.

Original languageEnglish (US)
JournalJournal of Clinical Orthopaedics and Trauma
DOIs
StateAccepted/In press - 2017

Fingerprint

Ligaments
Knee
Magnetic Resonance Imaging
Wounds and Injuries
Ankle Lateral Ligament
Anterior Cruciate Ligament

Keywords

  • Anterolateral ligament
  • Anterolateral rotational stability
  • Knee MRI
  • Pivot shift

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

Cite this

Anterolateral ligament injuries on magnetic resonance imaging and pivot-shift testing for rotational laxity. / Barrera, Carlos M.; Arizpe, Azael; Wodicka, Ross; Lesniak, Bryson P.; Baraga, Michael; Kaplan, Lee; Jose, Jean.

In: Journal of Clinical Orthopaedics and Trauma, 2017.

Research output: Contribution to journalArticle

@article{eef4141b1f44428e8204d61007459fce,
title = "Anterolateral ligament injuries on magnetic resonance imaging and pivot-shift testing for rotational laxity",
abstract = "Maintaining anterolateral rotational stability of the knee requires a complex set of structures, most notably the anterior cruciate ligament. However, lateral knee structures such as the anterolateral ligament (ALL) also play an important role. There has been controversy over the role the ALL plays in an ACL deficient knee to maintain rotational stability. In this study, we examined ACL deficient knees with and without intact ALLs, for rotatory laxity using a pivot shift examination. This was graded using International Knee Document Committee (IKDC) criteria. MRI was used to view the ALL and its status. We found no statistically significant difference in rotational stability of ACL deficient knees, with or without intact ALLs. We did however find a statistically significant association between injury to the ALL and other concomitant lateral structures such as the lateral collateral ligament, biceps femoris tendon, and iliotibial band. This supports that the ALL works in concert with the other lateral structures in the knee and the ACL, to provide rotational stability. This suggests that as an isolated structure, the ALL's contribution to clinical rotational stability is not significant, even in the presence of an ACL tear.",
keywords = "Anterolateral ligament, Anterolateral rotational stability, Knee MRI, Pivot shift",
author = "Barrera, {Carlos M.} and Azael Arizpe and Ross Wodicka and Lesniak, {Bryson P.} and Michael Baraga and Lee Kaplan and Jean Jose",
year = "2017",
doi = "10.1016/j.jcot.2017.10.004",
language = "English (US)",
journal = "Journal of Clinical Orthopaedics and Trauma",
issn = "0976-5662",
publisher = "Elsevier",

}

TY - JOUR

T1 - Anterolateral ligament injuries on magnetic resonance imaging and pivot-shift testing for rotational laxity

AU - Barrera, Carlos M.

AU - Arizpe, Azael

AU - Wodicka, Ross

AU - Lesniak, Bryson P.

AU - Baraga, Michael

AU - Kaplan, Lee

AU - Jose, Jean

PY - 2017

Y1 - 2017

N2 - Maintaining anterolateral rotational stability of the knee requires a complex set of structures, most notably the anterior cruciate ligament. However, lateral knee structures such as the anterolateral ligament (ALL) also play an important role. There has been controversy over the role the ALL plays in an ACL deficient knee to maintain rotational stability. In this study, we examined ACL deficient knees with and without intact ALLs, for rotatory laxity using a pivot shift examination. This was graded using International Knee Document Committee (IKDC) criteria. MRI was used to view the ALL and its status. We found no statistically significant difference in rotational stability of ACL deficient knees, with or without intact ALLs. We did however find a statistically significant association between injury to the ALL and other concomitant lateral structures such as the lateral collateral ligament, biceps femoris tendon, and iliotibial band. This supports that the ALL works in concert with the other lateral structures in the knee and the ACL, to provide rotational stability. This suggests that as an isolated structure, the ALL's contribution to clinical rotational stability is not significant, even in the presence of an ACL tear.

AB - Maintaining anterolateral rotational stability of the knee requires a complex set of structures, most notably the anterior cruciate ligament. However, lateral knee structures such as the anterolateral ligament (ALL) also play an important role. There has been controversy over the role the ALL plays in an ACL deficient knee to maintain rotational stability. In this study, we examined ACL deficient knees with and without intact ALLs, for rotatory laxity using a pivot shift examination. This was graded using International Knee Document Committee (IKDC) criteria. MRI was used to view the ALL and its status. We found no statistically significant difference in rotational stability of ACL deficient knees, with or without intact ALLs. We did however find a statistically significant association between injury to the ALL and other concomitant lateral structures such as the lateral collateral ligament, biceps femoris tendon, and iliotibial band. This supports that the ALL works in concert with the other lateral structures in the knee and the ACL, to provide rotational stability. This suggests that as an isolated structure, the ALL's contribution to clinical rotational stability is not significant, even in the presence of an ACL tear.

KW - Anterolateral ligament

KW - Anterolateral rotational stability

KW - Knee MRI

KW - Pivot shift

UR - http://www.scopus.com/inward/record.url?scp=85030853775&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85030853775&partnerID=8YFLogxK

U2 - 10.1016/j.jcot.2017.10.004

DO - 10.1016/j.jcot.2017.10.004

M3 - Article

AN - SCOPUS:85030853775

JO - Journal of Clinical Orthopaedics and Trauma

JF - Journal of Clinical Orthopaedics and Trauma

SN - 0976-5662

ER -