Document Detail

Open versus closed kinetic chain exercises for patellar chondromalacia.
MedLine Citation:
PMID:  17615174     Owner:  NLM     Status:  MEDLINE    
SUBJECT: Conservative treatment of patellar chondromalacia has been the subject of several studies. One recommended treatment is a strengthening exercise of the quadriceps muscle, which may be performed in closed or open kinetic chains. This study was designed to compare the effect of straight leg raise (SLR) and semi-squat exercises on the treatment of patellar chondromalacia, which has not been done to date. MATERIAL AND METHODS: 32 female university students with a diagnosis of patellar chondromalacia were randomly assigned to two experimental groups: SLR and semi-squat exercise. Before starting exercise protocols, Q angle, maximal isometric voluntary contraction force (MIVCF) of quadriceps, crepitation, circumference of thigh 5 and 10 cm above the patella and patellofemoral pain according to the visual analogue scale (VAS) were assessed. Both groups then followed a 3-week programme of quadriceps muscle strengthening exercises (SLR or semi-squat) starting with 20 exercises twice a day and increasing each session by 5 exercises every 2 days. All measurements were repeated at the end of each week and then again 2 weeks after the 3-week exercise programme. RESULTS: Reduced Q angle (mean differences (SD) 0.8 (0.3), p = 0.016) and crepitation (19.9 (8.5), p = 0.04), and an increase in the MIVCF of the quadriceps (15.8 (5.6), p = 0.01) and thigh circumference (1.5 (0.3), p = 0.001) were found in semi-squat group compared with SLR group. However, patellofemoral pain was decreased significantly in both groups. CONCLUSION: The results of this study indicate that semi-squat exercises (closed kinetic chain) are more effective than SLR exercise (open kinetic chain) in the treatment of patellar chondromalacia. More studies are needed to investigate the long-term effect of these types of exercise.
A H Bakhtiary; E Fatemi
Related Documents :
15701604 - Effects of administration of exogenous growth factors on biomechanical properties of th...
25179464 - Estimating equations for cardiopulmonary exercise testing variables in fontan patients:...
25187244 - Post-activation potentiation of sprint acceleration performance using plyometric exercise.
25398794 - Cardiopulmonary exercise testing (cpet) as preoperative test before lung resection.
3597244 - Training effects on regional blood flow response to maximal exercise in foxhounds.
17141634 - Respiratory muscle training in restrictive thoracic disease: a randomized controlled tr...
Publication Detail:
Type:  Comparative Study; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't     Date:  2007-07-05
Journal Detail:
Title:  British journal of sports medicine     Volume:  42     ISSN:  1473-0480     ISO Abbreviation:  Br J Sports Med     Publication Date:  2008 Feb 
Date Detail:
Created Date:  2008-02-07     Completed Date:  2008-05-09     Revised Date:  2009-04-16    
Medline Journal Info:
Nlm Unique ID:  0432520     Medline TA:  Br J Sports Med     Country:  England    
Other Details:
Languages:  eng     Pagination:  99-102; discussion 102     Citation Subset:  IM    
Physiotherapy Department, Rehabilitation Faculty, Semnan University of Medical Sciences, Semnan, Iran.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Chondromalacia Patellae / rehabilitation*
Exercise Therapy / methods*
Muscle Strength / physiology*
Treatment Outcome
Comment In:
Clin J Sport Med. 2009 Jan;19(1):76-7   [PMID:  19124993 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  The effect of protective headgear on head injuries and concussions in adolescent football (soccer) p...
Next Document:  Effects of laxative and N-acetylcysteine on mucus accumulation, bacterial load, transit, and inflamm...