Higher body mass index adversely affect the recovery of the knee function after ACL reconstruction
Author(s):
Harput Gulcan (Turkey)
,
Harput Gulcan (Turkey)
Affiliations:
GUNEY-DENIZ HANDE
,
GUNEY-DENIZ HANDE
Affiliations:
Ozer H.
,
Ozer H.
Affiliations:
BALTACI GUL
BALTACI GUL
Affiliations:
ESSKA Academy. HARPUT G. 05/09/18; 209503; P07-805 Topic: Arthroscopic Surgery
Dr. GULCAN HARPUT
Dr. GULCAN HARPUT
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Abstract
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Objectives: The aim of this study was to investigate the differences between the high and normal BMI levels on hamstring and quadriceps isometric strength at the 1-, 3-, and 6-month time points and functional outcomes at 6 months after anterior cruciate ligament reconstruction (ACLR) with hamstring tendon autograft (HTG).

Methods: A total of 120 participants who had undergone ACLR with HTG were included in this study. The participants were divided into two groups according to their body mass index (BMI). The participants whose BMI were between 17.0 to 24.9 kg/m2 included in Group 1 (n=61), those whose BMI>24.9 kg/m2 included in Group 2 (n=59). Isometric strength of the quadriceps and hamstring muscles were measured at 1st, 3rd and 6th months after surgery. Concentric and eccentric knee strength, one leg hop for distance, vertical jump, star excursion balance test and IKDC score were also evaluated at 6 months post-surgery. Repeated measures of ANOVA and student t test were used for statistical analysis.

Results: Quadriceps isometric strength changes from 1st month to 6th months were significant. Group 2 showed lower quadriceps strength recovery compared to Group 1. Group 2 also demonstrated lower scores in concentric and eccentric quadriceps and hamstring strength, hop, jump and balance performance, and IKDC score at 6 months post-surgery (p<0.05).

Conclusions: Higher BMI levels adversely affect quadriceps and hamstring strength recovery, hop performance, the dynamic balance and self-reported knee function in patients who undergone ACLR with HTG. The clinicians should consider that the patients who had undergone ACLR and have higher BMI are likely to be late to return their preinjury activity level.

Keywords:
anterior cruciate ligament, body mass, muscle strength, return to sport
Objectives: The aim of this study was to investigate the differences between the high and normal BMI levels on hamstring and quadriceps isometric strength at the 1-, 3-, and 6-month time points and functional outcomes at 6 months after anterior cruciate ligament reconstruction (ACLR) with hamstring tendon autograft (HTG).

Methods: A total of 120 participants who had undergone ACLR with HTG were included in this study. The participants were divided into two groups according to their body mass index (BMI). The participants whose BMI were between 17.0 to 24.9 kg/m2 included in Group 1 (n=61), those whose BMI>24.9 kg/m2 included in Group 2 (n=59). Isometric strength of the quadriceps and hamstring muscles were measured at 1st, 3rd and 6th months after surgery. Concentric and eccentric knee strength, one leg hop for distance, vertical jump, star excursion balance test and IKDC score were also evaluated at 6 months post-surgery. Repeated measures of ANOVA and student t test were used for statistical analysis.

Results: Quadriceps isometric strength changes from 1st month to 6th months were significant. Group 2 showed lower quadriceps strength recovery compared to Group 1. Group 2 also demonstrated lower scores in concentric and eccentric quadriceps and hamstring strength, hop, jump and balance performance, and IKDC score at 6 months post-surgery (p<0.05).

Conclusions: Higher BMI levels adversely affect quadriceps and hamstring strength recovery, hop performance, the dynamic balance and self-reported knee function in patients who undergone ACLR with HTG. The clinicians should consider that the patients who had undergone ACLR and have higher BMI are likely to be late to return their preinjury activity level.

Keywords:
anterior cruciate ligament, body mass, muscle strength, return to sport
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