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 language | English (US) |
|---|---|
| Journal | Journal of Clinical Orthopaedics and Trauma |
| DOIs | |
| State | Accepted/In press - 2017 |
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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 journal › Article
}
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 -