Effect of high body mass index on knee muscle strength and function after anterior cruciate ligament reconstruction using hamstring tendon autografts.
BMC Musculoskelet Disord
; 19(1): 363, 2018 Oct 10.
Article
in En
| MEDLINE
| ID: mdl-30305072
ABSTRACT
BACKGROUND:
Increased body mass index (BMI) has been associated with poorer function in patients who have undergone anterior cruciate ligament (ACL) reconstruction. However, the effect of high BMI on muscle strength in these patients remained unclear. The current study aimed to compare knee muscle strength and Knee injury and Osteoarthritis Outcome Score (KOOS) in ACL-reconstructed patients with a variety of different BMIs.METHODS:
From November 2013 to March 2016, we prospectively enrolled 30 patients who underwent ACL reconstruction (18-60 years of age). Anthropometric parameters, body compositions, isokinetic muscle strength and KOOS were assessed preoperatively, and at post-operative 16th week and 28th week. The patients were stratified into two groups by BMI, i.e. normal BMI (18.5-24.9 kg/m2) and high BMI (≥25.0 kg/m2).RESULTS:
Twelve patients in the normal BMI group completed the follow-up, while sixteen patients did so in the high BMI group. In comparison of muscle strength between baseline and 28th week follow-up, the normal BMI group had significant increases in overall knee muscle strength, while the high BMI group only had increases in extensors of uninjured knee and flexors of the injured knee. However, there were significant increases in all KOOS subscales for the high BMI group. The high BMI patients reported increased KOOS, which may reflect the contribution of ligament stability in the presence of inadequate muscle strength.CONCLUSIONS:
The normal BMI patients had improvement in all knee muscle strength following ACL reconstruction, while high BMI patients only had increases in certain knee muscles. High BMI patients had a decreased quadriceps muscle symmetry index, as compared to their normal BMI counterparts. Increases in quadriceps muscle strength of the uninjured knee and ACL reconstruction were associated with improvements in KOOS in high BMI patients.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Tendon Transfer
/
Body Mass Index
/
Quadriceps Muscle
/
Muscle Strength
/
Anterior Cruciate Ligament Reconstruction
/
Hamstring Tendons
/
Anterior Cruciate Ligament Injuries
/
Knee Joint
Type of study:
Etiology_studies
/
Observational_studies
/
Risk_factors_studies
Limits:
Adolescent
/
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
BMC Musculoskelet Disord
Journal subject:
FISIOLOGIA
/
ORTOPEDIA
Year:
2018
Document type:
Article
Affiliation country:
Taiwan