TY - JOUR
T1 - Combined anterior and rotational laxity measurements allow characterizing personal knee laxity profiles in healthy individuals
AU - Mouton, Caroline
AU - Seil, Romain
AU - Meyer, Tim
AU - Agostinis, Hélène
AU - Theisen, Daniel
N1 - Funding Information:
The present project has been supported by the National Research Fund, Luxembourg (1084312) and by the Oeuvre Nationale de Secours Grande-Duchesse Charlotte.
Publisher Copyright:
© 2014, European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA).
PY - 2015/12/1
Y1 - 2015/12/1
N2 - Purpose: The aim of this study was to quantify sagittal and rotational knee laxity profiles taking into account individual influencing factors. Methods: Linear regression models were used to determine which individual characteristics (age, height, body mass and sex) influenced the outcome in a group of 104 healthy subjects. The standardized residuals were used as individualized (corrected) laxity scores and were combined to determine knee laxity profiles. Results: Anterior knee laxity was not influenced by individual characteristics. Rotational knee laxity was higher in females and inversely related to body mass. The correlation between anterior laxity and internal rotation scores was weak (r = 0.24, p = 0.02). The proportion of knees concerned by increased laxity scores (scores >1) was similar for anterior displacement, internal and external rotation (15 %). Only 32 % of the tested subjects showed a normal profile (score >−1 and <1) for all three directions, 33 % were concerned by hyperlaxity, 40 % by hypolaxity and 5 % by both. Conclusions: The diversity of laxity profiles found here highlights that the interpretation of multidirectional knee laxity is complex and suggests the necessity for individualized care of knee diseases and injuries. These results contribute to the understanding of knee laxity and throw the basis for prevention strategies and improvement of treatment outcomes in injuries and diseases. Level of evidence: Case series with no comparison groups, Level IV.
AB - Purpose: The aim of this study was to quantify sagittal and rotational knee laxity profiles taking into account individual influencing factors. Methods: Linear regression models were used to determine which individual characteristics (age, height, body mass and sex) influenced the outcome in a group of 104 healthy subjects. The standardized residuals were used as individualized (corrected) laxity scores and were combined to determine knee laxity profiles. Results: Anterior knee laxity was not influenced by individual characteristics. Rotational knee laxity was higher in females and inversely related to body mass. The correlation between anterior laxity and internal rotation scores was weak (r = 0.24, p = 0.02). The proportion of knees concerned by increased laxity scores (scores >1) was similar for anterior displacement, internal and external rotation (15 %). Only 32 % of the tested subjects showed a normal profile (score >−1 and <1) for all three directions, 33 % were concerned by hyperlaxity, 40 % by hypolaxity and 5 % by both. Conclusions: The diversity of laxity profiles found here highlights that the interpretation of multidirectional knee laxity is complex and suggests the necessity for individualized care of knee diseases and injuries. These results contribute to the understanding of knee laxity and throw the basis for prevention strategies and improvement of treatment outcomes in injuries and diseases. Level of evidence: Case series with no comparison groups, Level IV.
KW - Anterior knee laxity
KW - Knee laxity profiles
KW - Rotational knee laxity
UR - http://www.scopus.com/inward/record.url?scp=84948419048&partnerID=8YFLogxK
UR - https://www.ncbi.nlm.nih.gov/pubmed/25155050
U2 - 10.1007/s00167-014-3244-6
DO - 10.1007/s00167-014-3244-6
M3 - Article
C2 - 25155050
AN - SCOPUS:84948419048
SN - 0942-2056
VL - 23
SP - 3571
EP - 3577
JO - Knee Surgery, Sports Traumatology, Arthroscopy
JF - Knee Surgery, Sports Traumatology, Arthroscopy
IS - 12
ER -