Computed tomographic evaluation of the canine intercondylar notch in normal and cruciate deficient stifles

B. A. Lewis, D. A. Allen, T. D. Henrikson, Terry W Lehenbauer

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

In the human and veterinary orthopaedic literature it has been implied that intercondylar notch stenosis is a mechanical factor in cranial cruciate ligament rupture and intraarticular graft failure. The patients in this study were classified as normal (32), unilateral cruciate rupture (23), or bilateral cruciate rupture (17). The dogs were placed under general anaesthesia and both stifles were scanned via computed tomography (CT) as previously described. Three CT slices at predetermined levels were evaluated within the notch. Measurements included opening notch angle, notch width and height, condyle width, and notch width index (notch width/condyle width) at two different heights within the notch. Intercondylar notch measurements at the most cranial extent were significantly more narrow in unilateral and bilaterally affected stifles when compared to the normal population. Significant differences were noted in the opening notch angle (ONA), notch width index (NWI), NWI at two thirds notch height (NWI2/3), and tibial slope index (TSI). No significant differences were noted between unilateral and bilateral affected stifles. Increased mechanical contact of the cranial cruciate ligament with a stenotic intercondylar notch may predispose the ligament to mechanical wear and structural weakening. Intercondylar notch measurements have been used as a tool to predict the risk of anterior cruciate ligament injury in young human athletes, and to assess the risk factors for intra-articular graft replacements. Our findings may be useful in developing similar predictive models using stifle CT scans.

Original languageEnglish (US)
Pages (from-to)119-124
Number of pages6
JournalVeterinary and Comparative Orthopaedics and Traumatology
Volume21
Issue number2
DOIs
StatePublished - 2008
Externally publishedYes

Fingerprint

Stifle
Canidae
Rupture
dogs
Anterior Cruciate Ligament
Tomography
computed tomography
cranial cruciate ligament
Transplants
Bone and Bones
Ligaments
Athletes
General Anesthesia
Orthopedics
anterior cruciate ligament
Pathologic Constriction
Joints
Dogs
athletes
orthopedics

Keywords

  • Canine
  • Computed tomography
  • Cruciate ligament
  • Intercondylar notch

ASJC Scopus subject areas

  • Animal Science and Zoology
  • veterinary(all)

Cite this

Computed tomographic evaluation of the canine intercondylar notch in normal and cruciate deficient stifles. / Lewis, B. A.; Allen, D. A.; Henrikson, T. D.; Lehenbauer, Terry W.

In: Veterinary and Comparative Orthopaedics and Traumatology, Vol. 21, No. 2, 2008, p. 119-124.

Research output: Contribution to journalArticle

@article{6a70078038f7438e8da6576c0c3e04e8,
title = "Computed tomographic evaluation of the canine intercondylar notch in normal and cruciate deficient stifles",
abstract = "In the human and veterinary orthopaedic literature it has been implied that intercondylar notch stenosis is a mechanical factor in cranial cruciate ligament rupture and intraarticular graft failure. The patients in this study were classified as normal (32), unilateral cruciate rupture (23), or bilateral cruciate rupture (17). The dogs were placed under general anaesthesia and both stifles were scanned via computed tomography (CT) as previously described. Three CT slices at predetermined levels were evaluated within the notch. Measurements included opening notch angle, notch width and height, condyle width, and notch width index (notch width/condyle width) at two different heights within the notch. Intercondylar notch measurements at the most cranial extent were significantly more narrow in unilateral and bilaterally affected stifles when compared to the normal population. Significant differences were noted in the opening notch angle (ONA), notch width index (NWI), NWI at two thirds notch height (NWI2/3), and tibial slope index (TSI). No significant differences were noted between unilateral and bilateral affected stifles. Increased mechanical contact of the cranial cruciate ligament with a stenotic intercondylar notch may predispose the ligament to mechanical wear and structural weakening. Intercondylar notch measurements have been used as a tool to predict the risk of anterior cruciate ligament injury in young human athletes, and to assess the risk factors for intra-articular graft replacements. Our findings may be useful in developing similar predictive models using stifle CT scans.",
keywords = "Canine, Computed tomography, Cruciate ligament, Intercondylar notch",
author = "Lewis, {B. A.} and Allen, {D. A.} and Henrikson, {T. D.} and Lehenbauer, {Terry W}",
year = "2008",
doi = "10.3415/VCOT-07-04-0032",
language = "English (US)",
volume = "21",
pages = "119--124",
journal = "Veterinary and Comparative Orthopaedics and Traumatology",
issn = "0932-0814",
publisher = "Schattauer GmbH",
number = "2",

}

TY - JOUR

T1 - Computed tomographic evaluation of the canine intercondylar notch in normal and cruciate deficient stifles

AU - Lewis, B. A.

AU - Allen, D. A.

AU - Henrikson, T. D.

AU - Lehenbauer, Terry W

PY - 2008

Y1 - 2008

N2 - In the human and veterinary orthopaedic literature it has been implied that intercondylar notch stenosis is a mechanical factor in cranial cruciate ligament rupture and intraarticular graft failure. The patients in this study were classified as normal (32), unilateral cruciate rupture (23), or bilateral cruciate rupture (17). The dogs were placed under general anaesthesia and both stifles were scanned via computed tomography (CT) as previously described. Three CT slices at predetermined levels were evaluated within the notch. Measurements included opening notch angle, notch width and height, condyle width, and notch width index (notch width/condyle width) at two different heights within the notch. Intercondylar notch measurements at the most cranial extent were significantly more narrow in unilateral and bilaterally affected stifles when compared to the normal population. Significant differences were noted in the opening notch angle (ONA), notch width index (NWI), NWI at two thirds notch height (NWI2/3), and tibial slope index (TSI). No significant differences were noted between unilateral and bilateral affected stifles. Increased mechanical contact of the cranial cruciate ligament with a stenotic intercondylar notch may predispose the ligament to mechanical wear and structural weakening. Intercondylar notch measurements have been used as a tool to predict the risk of anterior cruciate ligament injury in young human athletes, and to assess the risk factors for intra-articular graft replacements. Our findings may be useful in developing similar predictive models using stifle CT scans.

AB - In the human and veterinary orthopaedic literature it has been implied that intercondylar notch stenosis is a mechanical factor in cranial cruciate ligament rupture and intraarticular graft failure. The patients in this study were classified as normal (32), unilateral cruciate rupture (23), or bilateral cruciate rupture (17). The dogs were placed under general anaesthesia and both stifles were scanned via computed tomography (CT) as previously described. Three CT slices at predetermined levels were evaluated within the notch. Measurements included opening notch angle, notch width and height, condyle width, and notch width index (notch width/condyle width) at two different heights within the notch. Intercondylar notch measurements at the most cranial extent were significantly more narrow in unilateral and bilaterally affected stifles when compared to the normal population. Significant differences were noted in the opening notch angle (ONA), notch width index (NWI), NWI at two thirds notch height (NWI2/3), and tibial slope index (TSI). No significant differences were noted between unilateral and bilateral affected stifles. Increased mechanical contact of the cranial cruciate ligament with a stenotic intercondylar notch may predispose the ligament to mechanical wear and structural weakening. Intercondylar notch measurements have been used as a tool to predict the risk of anterior cruciate ligament injury in young human athletes, and to assess the risk factors for intra-articular graft replacements. Our findings may be useful in developing similar predictive models using stifle CT scans.

KW - Canine

KW - Computed tomography

KW - Cruciate ligament

KW - Intercondylar notch

UR - http://www.scopus.com/inward/record.url?scp=42549109527&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=42549109527&partnerID=8YFLogxK

U2 - 10.3415/VCOT-07-04-0032

DO - 10.3415/VCOT-07-04-0032

M3 - Article

VL - 21

SP - 119

EP - 124

JO - Veterinary and Comparative Orthopaedics and Traumatology

JF - Veterinary and Comparative Orthopaedics and Traumatology

SN - 0932-0814

IS - 2

ER -