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Chapter 14 knee injuries quizlet
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Weight bearing joints, specifically the knee, are at risk of developing osteoarthritis after injury, especially in relation to participation of a high impact sport. Results from this study suggest that knee osteoarthritis increases in prevalence an athlete who has sustained traumatic knee injury. Trauma of the knee joint can lead to a series of lesions and damage to the articular cartilage. Damage to the articular cartilage is primarily associated with intraarticular bleeding which leads to (posttraumatic) joint inflammation. Once the joint experiences trauma, chronic remodeling of cartilage and other tissues of the joint initiates and progresses to osteoarthritis in most cases. The most effective forms of evaluation and diagnosis of knee osteoarthritis is physical examination and plain radiography. Prevention and self-management strategies for osteoarthritis should be targeted to athletes with a history of knee injury. Health care professionals should target knee-injured individuals for primary prevention with respect to education, activity modification, and the role of re-establishing neuromuscular function and exercise in surgical decision-making and rehabilitation.
The Development of Knee Osteoarthritis in Athletes
Osteoarthritis, also known as degenerative joint disease, is an endemic condition that affects about 20 million people in the United States alone (Britton, 2009, p.1). Osteoarthritis is the most common type of arthritis and is defined as a gradual process of destruction and degeneration or wearing away of the joint cartilage that typically occurs in the older individual age 50 and over (Lozada, 2014). Although this disease is well known for its association with the natural aging process, it is also prevalent in at...
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...ury-related knee osteoarthritis: opportunities for the primary and secondary prevention of knee osteoarthritis. Arthritis Research & Therapy, 1-28. Retrieved from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2945059/#__ffn_sectitle.
Lotz, M. K. (June 28, 2010). New developments in osteoarthritis. Posttraumatic osteoarthritis: pathogenesis and pharmacological treatment options. Arthritis Research & Therapy, 1-9. Retrieved from http://www.biomedcentral.com/content/pdf/ar3046.pdf.
Lozada, MD, C. J. (2014, April 3). Osteoarthritis. Osteoarthritis. Retrieved May 21, 2014, from http://emedicine.medscape.com/article/330487-overview#a0101.
Vincent, H. K., Vincent, K. R., Conrad, B., & Fregly, B. J. (May 1, 2013). The Pathophysiology of Osteoarthritis: A Mechanical Perspective on the Knee Joint. PM&R, S3-S9. Retrieved from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3635670/.
Nisell R. (1985) Mechanics of the knee: A study of joint and muscle load with clinical applications. Acta Orthop Scand 216; 1-42.
The incidence and prevalence rate of anterior cruciate ligament (ACL) injuries in female athletes continues to increase over time (Prodromos, Han, Rogowski, Joyce, & Shi, 2007). With the growing rate in the amount of young women participating in sports, data has shown that the rate of ACL injury increases linearly with this participation ("The Relationship Between Static Posture and ACL Injury in Female Athletes," 1996). This epidemic of ACL injuries in female athletes, young or old, continues to be problematic in the athletic world. This problem not only affects the athlete themselves, but also the coaches and the sports medicine community.
Tearing the ACL is now considered an epidemic in the United States over 100,000 recorded incidences are reported each year (Moeller). While such a finding may be good for orthopedic doctors and surgeons, this is not good for millions of athletes’ competing these days in high intensity sports. This is especially a problem for female athletes who are two to four times more likely to tear their ACL than men (Moeller). This is one of the biggest mysteries about ACL tears is the difference between the number of injuries seen in women and men. Women tend to tear there ACL far more frequently then men. While not everyone agrees that gender itself is the source of the problem, evidence is growing that females are learning too late that participating in sports can also become the first step to ruining an active lifestyle.
The most common knee injury in sports is damage to the anterior cruciate ligament (ACL) through tears or sprains. “They occur in high demand sports that involve planting and cutting, jumping with a poor landing, and stopping immediately or changing directions” (University of Colorado Hospital). The ACL is a ligament that runs diagonally in the middle of the knee and found at the front of the patellar bone. Its function involves controlling the back and forth motion of the knee, preventing the tibia from sliding out in front of the femur, and providing rational stability to the knee. Interestingly, women are more prone to ACL injuries than men. The occurrence is four to six times greater in female athletes.
Ytterberg, S.R., Mahowald, M.L. & Krug, H.E.(1994) “Exercise for arthritis”, BailliOre' s Clinical Rheumatology, 8(1), pp. 161-189. ScienceDirect [Online]. Available at: http://www.sciencedirect.com/science/article/pii/S0950357905802304 (Accessed: 13th May 2014).
Osteonecrosis has become a subject of interest amongst orthopaedic surgeons predominantly during the last four to five decades.
There are many injuries in general, but sports injuries? Sprains and Strains are the most common injuries in sports. “Sprains are injuries to ligaments, the tough bands connecting in a joint. Suddenly stretching ligaments past their limits deforms or tears them” (Hoffman 1). Ligaments are like springs in a sense that when you stretch a spring, it will return to it’s normal state unless they are
The majority of ACL injuries suffered during athletic participation are of the noncontact variety. Three main noncontact mechanisms have been identified planting and cutting, straight-knee landing and one-step stop landing with the knee hyperextended. Pivoting and sudden deceleration are also common mechanisms of noncontact ACL injury. Basketball, soccer, and volleyball consistently produce some of the highest ACL injury rates across various age groups. Other activities with a high rate of injury are gymnastics, martial arts, and running. In most sports, injuries occur more often in games than in practice. Many injuries have occurred during the first 30 minutes of play. One-reason physicians are seeing more ACL injuries in female patients that more women play sports, and they play more intensely. But as they continued to do more studies, they are finding that women's higher rate of ACL is probably due ...
In order to understand how the menisci can be injured, you must understand the basic anatomy of the menisci and why they are important. The menisci are two oval (semilunar) fibrocartilages that deepen the articular facets of the tibia and cushion any stresses placed on the knee joint. They enhance the total stability of the knee, assist in the control of normal knee motion, and provide shock absorption against compression forces between the tibia and the femur (Booher, 2000). Articular cartilage covers the ends of the bones that make up the joint. The articular cartilage surface is a tough, very slick material that allows the surfaces to slide against one another without damage to either surface. This ability of the meniscus to spread out the force on the joint surfaces as we walk is important because it protects the articular cartilage from excessive forces occurring in any one area on the joint surface, leading to degeneration over time (Sutton, 1999).
These types of injuries could take upwards to eighteen months to return to playing condition, and in this time an athlete will often fall behind in the sport that they love. This often causes the athlete to quit the sport they once loved because they can no longer truly compete amongst their peers. I know that there has to be a way to accelerate this process of recovery and get those athletes back on the field. This is where my passion for orthopaedics
A 16 year old, female high school soccer player, Lindsey Robinson tore her anterior cruciate ligament (ACL) from a soccer game. Interestingly, she was not the only one in her team who injured her ACL, but also several of her teammates have torn the same ligament as well during the soccer season. Lephart (2002) found that women involved in physical activity are more susceptible to acquire the ACL injuries than men who are involved in the same physical activity (as cited in Ogden, 2002). According to “ACL Injury Prevention” (2004), the numbers on female ACL ruptures have been increased for the past ten year. Over 1.4 million women have been suffered from the ACL rupture which is twice the rate of the previous decade. Therefore, female ACL injuries are now a growing problem in the nation (Anonymous, 2004). Back in 1950s and 1960s, female participation in sports was rare; therefore, the rate of injuries was very low. However, according to “ACL Injuries and Female Athletes” (n.d), as Title IX was implemented in 1972, female participation in numerous sports has dramatically increased. Moreover, the rate of acquiring injuries to the ACL also has dramatically increased (Anonymous, n.d). In terms of comparing the rate of acquiring ACL injuries between two genders, females have higher rate than males do. According to the “Physical Therapy Corner” (2007), “women suffered anterior cruciate ligament injuries more often than men, nearly 4 times as often in basketball, 3 times as often in gymnastics, and nearly 2 and a half times as often in soccer” (Knee Injuries section, para.1). There are various risk factors that contribute to the high rate of acquiring injuries to the ACL for female athletes. External factors such as improper sh...
Mayo Clinic Staff. (2011, May 2). Treatments and drugs. Retrieved Febuary 1, 2012, from Mayclinic: http://www.mayoclinic.com/health/rheumatoid-arthritis/DS00020/DSECTION=treatments-and-drugs
Almost everyone develops osteoarthrits as they age, some get it while in their fifties and in others it does not appear until their eighties. Osteoarthritis is the most common form that affects older people; this form of the disease wears down the cartilage mostly through overuse and injury but there are other causes. This specific form of the disease causes the cartilage to break down and the bones to rub against each other. Deformity and swelling occurs because knobs of hardened bits of cartilage develop in the joint. It forms especially if a joint has been injured many times.
Anterior knee pain plagues the athletic community, the most common being runner’s knee or patellofemoral pain syndrome (PFPS). One point or another in an athlete’s career they have experienced this kind of pain. When comparing between male and female athletes and who has the higher chance of knee pain, female athletes have a higher prevalence than male athletes (Dolak KL). There are several different mechanisms of patellofemoral pain a few being: pes planus,an increased Q angle, weak, tight or an imbalance in the quadriceps or hip muscles. Recently in my clinic site as the spring sports such as, baseball, soccer and track and field the athlete’s perform a lot of squatting, running, and kneeling which load the patellofemoral joint. We are now starting to see several and treat several athletes with patellofemoral knee pain. Each of them experiencing the pain from a different mechanism. As an athletic trainer we want to treat not only the symptoms, but the mechanism of injury to prevent further injuries down the road. If patellofemoral pain syndrome is not properly treated it can develop into chronic diseases such as chondromalacia or arthritis, maybe eventually leading to a total knee plan. (Lee SE) Treatment while the athletes are young and symptoms aren’t severe is key to preventing further injury.
An estimated 50 million Americans have suffered or are suffering knee pain or injuries. Most of these pains, sprains, and strains could probably have been avoided with proper conditioning (Fox, 147). I have had knee pain since my freshmen year of high school and have finally taken the initiative to find some exercises that will help ease this pain, and build muscle strength in the surrounding areas to avoid another possible injury.