scholarly journals An Investigation of Knee Injury Profiles among Iranian Elite Karatekas: Observations from a Cross-Sectional Study

2021 ◽  
Vol 18 (13) ◽  
pp. 6888
Author(s):  
Hamidreza Naserpour ◽  
Julien S. Baker ◽  
Amir Letafatkar ◽  
Giacomo Rossettini ◽  
Frédéric Dutheil
Keyword(s):  
Knee Injury ◽  
Cruciate Ligament ◽  
Knee Injuries ◽  
Cross Sectional Study ◽  
Lower Extremity Injury ◽  
Sectional Study ◽  
Positive Health ◽  
Sports Activity ◽  
Cross Sectional ◽  
National Team

Karate training, despite the many positive health benefits, carries a risk of injury for participants. The current cross-sectional study aimed to investigate knee injury profiles among Iranian elite karatekas. Participants who attended the national team qualifiers, which included 390 male Kumite karatekas (age 24 ± 3 years old and weight 63 ± 12 kg), participated in this study. Information on knee injuries (injury history, type of injury mechanisms, and effects of knee symptoms on the ability to perform daily activities and recreational activities) were obtained using the Knee Outcome Survey (KOS). Using Pearson’s correlation coefficient, the study examined the relationships between different variables, including KOS subscales and levels of self-reported knee joint function. Our findings indicated that 287 karatekas (73.6%) experienced knee injuries. The anterior cruciate ligament (ACL) rupture (6.9%), articular cartilage (5.4%), and meniscus damage (3.8%) were the main typology of injury. In addition, there were no differences in knee injuries between the non-dominant and dominant legs. Most injuries occurred during the preparatory period (n = 162, 50%), especially during training periods. The KOS subscales scores (Mean ± Sd) for activities of daily living (ADL) and sports activity (SAS) were, respectively, 89 ± 11 and 91 ± 9. The self-reported scores for both the ADL and SAS subscales were, respectively, 89 ± 11 and 90 ± 10. Pearson coefficients of ADL and SAS subscales with their self-reported score were r = 0.761 (p < 0.0001) and r = 0.782 and (p < 0.0001), respectively. The profile of knee injuries in the current investigation is similar to previous surveys that reported lower extremity injury patterns. The findings of this study could be adopted to inform practice aimed at planning interventions for the reduction and prevention of knee injuries among karatekas.

scholarly journals Pattern of Knee Injury Cases Attending Combined Military Hospital, Dhaka

2020 ◽  
Vol 15 (1) ◽  
pp. 98-101
Author(s):  
Md Mashiur Rahman ◽  
Md Fashiur Rahman ◽  
Zulfiquer Ahmed Amin ◽  
Zakia Hossain Faiza ◽  
Zahidul Islam ◽  
...  
Keyword(s):  
Knee Injury ◽  
Cruciate Ligament ◽  
Knee Injuries ◽  
Armed Forces ◽  
Cross Sectional Study ◽  
Left Knee ◽  
Military Hospital ◽  
Age Group ◽  
Cross Sectional ◽  
Increased Risk

Introduction: Knee injury one of the most common injuries among soldiers accounts for losses in efficient combat power as well as increase burden of disability placed to the different units of Armed Forces. Objectives: To find out the pattern of knee injury of patients attending at a tertiary military hospital. Materials and Methods: This descriptive cross-sectional study carried out during January 2017 to December 2017 at Orthopedic Center of CMH, Dhaka. A total of 153 knee injuries patients were selected purposively as per selection criteria and data were collected by face to face interview and record review. Results: Total 153 respondents’ mean age was 31.03±10.19 years, most of them (41.8%) were from age group 25-34 years and were male (90.8%). Anterior Cruciate Ligament (ACL) injury was predominant (37.9%) and main precipitating physical event was football (20.3%) followed by jumping 9 feet ditch (16.3%). Right knee was more involved (49.7%) than left knee (46.4%). Most of injuries occurred in the exercise ground (40.5%) then sports ground (35.3%). ACL injuries (19%) were common in the age group 25-34 years and 9.8% were in 15-24 years. Morbidity duration of knee injuries was <1 year for 49% and 1-5 years for 36.6% of the respondents. Conclusion: Training-related injuries negatively impact the capabilities of any Armed Forces. Low fitness levels among soldiers are associated with increased risk for injury and attrition. Knee injury may be considered as one of the major occupational health problems of Armed Forces. Journal of Armed Forces Medical College Bangladesh Vol.15 (1) 2019: 98-101

Rate of Force Development Remains Reduced in the Knee Flexors 3 to 9 Months After Anterior Cruciate Ligament Reconstruction Using Medial Hamstring Autografts: A Cross-Sectional Study

2020 ◽  
Vol 48 (13) ◽  
pp. 3214-3223
Author(s):  
Jakob Lindberg Nielsen ◽  
Kamilla Arp ◽  
Mette Lysemose Villadsen ◽  
Stine Sommer Christensen ◽  
Per Aagaard
Keyword(s):  
Functional Capacity ◽  
Cruciate Ligament ◽  
Knee Extensor ◽  
Cross Sectional Study ◽  
Healthy Controls ◽  
Sectional Study ◽  
Cross Sectional ◽  
Force Development ◽  
Anterior Cruciate ◽  
Maximal Muscle Strength

Background: Anterior cruciate ligament (ACL) rupture is a serious injury with a high prevalence worldwide, and subsequent ACL reconstructions (ACLR) appear to be most commonly performed using hamstring-derived (semitendinosus tendon) autografts. Recovery of maximal muscle strength to ≥90% of the healthy contralateral limb is considered an important criterion for safe return to sports. However, the speed of developing muscular force (ie, the rate of force development [RFD]) is also important for the performance of many types of activities in sports and daily living, yet RFD of the knee extensor and flexor muscles has apparently never been examined in patients who undergo ACLR with hamstring autograft (HA). Purpose: To examine potential deficits in RFD, maximal muscle strength (ie, maximal voluntary isometric contraction [MVIC]), and functional capacity of ACLR-HA limbs in comparison with the healthy contralateral leg and matched healthy controls 3 to 9 months after surgery. Study Design: Cross-sectional study; Level of evidence: 3. Methods: A total of 23 young patients who had undergone ACLR-HA 3 to 9 months earlier were matched by age to 14 healthy controls; both groups underwent neuromuscular screening. Knee extensor and flexor MVIC and RFD, as well as functional capacity (single-leg hop for distance [SLHD] test, timed single-leg sit-to-stand [STS] test), were assessed on both limbs. Furthermore, patient-reported knee function (Knee injury and Osteoarthritis Outcome Score) was assessed. Results: Knee extensor and flexor MVIC and RFD were markedly compromised in ACLR-HA limbs compared with healthy contralateral limbs (MVIC for extensor and flexor, 13% and 26%, respectively; RFD, 14%-17% and 32%-39%) and controls (MVIC, 16% and 31%; RFD, 14%-19% and 30%-41%) ( P < .05-.001). Further, ACLR-HA limbs showed reduced functional capacity (reduced SLHD and STS performance) compared with contralateral limbs (SLHD, 11%; STS, 14%) and controls (SLHD, 20%; STS, 31%) ( P < .01-.001). Strength (MVIC) and functional (SLHD) parameters were positively related to the duration of time after surgery ( P < .05), although this relationship was not observed for RFD and STS. Conclusion: Knee extensor and flexor RFD and maximal strength, as well as functional single-leg performance, remained substantially reduced in ACLR-HA limbs compared with noninjured contralateral limbs and healthy controls 3 to 9 months after reconstructive surgery.

History of knee injury and MRI-assessed knee structures in middle- and older-aged adults: a cross-sectional study

2014 ◽  
Vol 34 (8) ◽  
pp. 1463-1472 ◽  
Author(s):  
Hussain Ijaz Khan ◽  
Dawn Aitken ◽  
Leigh Blizzard ◽  
Changhai Ding ◽  
Jean-Pierre Pelletier ◽  
...  
Keyword(s):  
Knee Injury ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
History Of
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