Save
Knee Extension Deficit negatively affects return to sport criteria after ACL reconstruction
Author(s):
Harput Gulcan (Turkey)
,
Harput Gulcan (Turkey)
Affiliations:
Eraslan Leyla
,
Eraslan Leyla
Affiliations:
Yildiz T.
,
Yildiz T.
Affiliations:
ULUSOY B.
,
ULUSOY B.
Affiliations:
DEMIRCI S.
,
DEMIRCI S.
Affiliations:
BAYRAKCI TUNAY Volga
BAYRAKCI TUNAY Volga
Affiliations:
ESSKA Academy. HARPUT G. May 9, 2018; 209462; P06-1689
Dr. GULCAN HARPUT
Dr. GULCAN HARPUT
This content is reserved for ESSKA members. Login or become a member here

You can access free non-premium educational content on the ESSKA Academy Portal by registering for free as 'ESSKA Academy User' here
Abstract
Discussion Forum (0)
Rate & Comment (0)
Objectives: Quadriceps strength recovery and functional performance are commonly evaluated prior to return to sport after anterior cruciate ligament reconstruction (ACLR). However, few studies have documented potential knee extension range of motion (ROM) deficit after ACLR, or ascertained the relative contribution of knee extension ROM deficit to quadriceps strength and functional performance. The aim of this study was to determine the relationship between knee ROM at 4 weeks post-surgery and return to sport criteria evaluated by concentric and eccentric quadriceps strength, hop performance limb symmetry indices and self-reported knee function in patients with ACL reconstruction.

Methods: Forty patients (mean age: 28.25 ± 8 years, BMI: 25.7 ± 3.6 kg/m2) who had undergone ACL reconstruction with hamstring tendon autograft were included in the study. All patients followed the same rehabilitation program. Demographic characteristics of patients and knee extension ROM deficit were recorded at 4 weeks post-surgery. When they reached return to sport phase after surgery concentric and eccentric quadriceps strength was measured. Functional performance was evaluated by one leg hop test (OLHT), Vertical Jump Test (VJT) and International Knee Documentary Committee (IKDC). The ability of knee extension ROM at 4th weeks after surgery in relation with quadriceps strength and hop performance symmetry index at RTS phase was analyzed using Pearson Correlation Test.

Results: Sixty-six percent of patients had a knee extension ROM deficit at 4th weeks after surgery. Limb symmetry indexes of patients, concentric quadriceps index at 1800/s was found 80.6%, at 600/s was found 80%, eccentric quadriceps index at 600/s was found 75%, self reported knee function was found 75% and hop performance was found 86%. Knee extension ROM deficit is negatively correlated with concentric quadriceps strength ratio at 1800/s (p= 0.006, r= -0.477, r2=0.228), at 600/s (p= 0.022, r= -0.403, r2=0.163), eccentric quadriceps strength ratio at 600/s (p= 0.002, r= -0.554, r2=0.307), IKDC (p= 0.035, r= -0.400, r2=0.160) and VJT (p= 0.027, r= -0.425, r2=0.181).

Conclusions: This study shows that knee ROM extension deficit negatively affect the concentric and eccentric quadriceps strength recovery in ACL reconstructed patients. Based on these findings, to resolve between limb strength deficits and functional performance clinicians should take into consideration knee extension ROM deficit early phase of rehabilitation.

Keywords:
Limb symmetry index, quadriceps, extension deficit, anterior cruciate ligament
Code of conduct/disclaimer available in General Terms & Conditions
Anonymous User Privacy Preferences

Strictly Necessary Cookies (Always Active)

MULTILEARNING platforms and tools hereinafter referred as “MLG SOFTWARE” are provided to you as pure educational platforms/services requiring cookies to operate. In the case of the MLG SOFTWARE, cookies are essential for the Platform to function properly for the provision of education. If these cookies are disabled, a large subset of the functionality provided by the Platform will either be unavailable or cease to work as expected. The MLG SOFTWARE do not capture non-essential activities such as menu items and listings you click on or pages viewed.


Performance Cookies

Performance cookies are used to analyse how visitors use a website in order to provide a better user experience.



Google Analytics is used for user behavior tracking/reporting. Google Analytics works in parallel and independently from MLG’s features. Google Analytics relies on cookies and these cookies can be used by Google to track users across different platforms/services.


Save Settings