Hamstring Strainenteenshttps://kidshealth.org/EN/images/headers/T-hamstringStrain-enHD-AR1.jpgA hamstring strain happens when one or more of the muscles in the back of the leg gets stretched too far and starts to tear. Find out how to treat hamstring strains in this article for teens.tear a muscle, torn muscle, hurt muscle, muscles, leg pain, thigh pain, hamstring, ham string, thigh muscles, back of the thigh, pain in ack of the thigh, back thigh, strains, sprains, hamstring sprains, biceps femoris, semitendinosus, semimembranosus, pop, popping muscle, leg pain, sore leg, hurt leg, thigh hurts, limp, limping, swell, swelling, swollen, bruise, bruising, grade 1, grade 2, grade 3, crutches, stretch, stretching, muscle tears, tear grades, injuries, leg injuries, sports injuries, nsaids, compress, cold pack, splint, warmup, exercise, running technique, sport, sports, running, runners, running injuries, sports center03/09/201106/04/201809/02/2019Timothy Duer, PT, CSCS, SCS06/04/2016916a5522-34cb-41b2-bfa0-79128d0b135chttps://kidshealth.org/ws/RadyChildrens/en/teens/hamstring-strain.html/<p>Frank was trying to beat an opposing player to a loose ball during a soccer game when he felt a sharp pain at the back of his left leg. He dropped to the ground, but when he tried to get up and walk, he fell down again and had to be helped off the field.</p> <p>The next day, Frank went to see a doctor. The doctor asked him a few questions, examined his leg, and told him he had a grade 2 strain — a partial tear — of one of the muscles in his hamstring.</p> <h3>What Is a Hamstring Strain?</h3> <p>Three muscles run down the back of your leg, from your thigh to your knee — the <strong>biceps femoris</strong>, <strong>semitendinosus</strong>, and <strong>semimembranosus</strong> — and help you bend your knee and extend your hip. As a group, they are known as the hamstring. A hamstring strain, sometimes called a pulled hamstring, happens when one or more of these muscles gets stretched too far and starts to tear.</p> <p>Hamstring strains can be mild, with little pain and a short recovery time. Or, they can be severe and need surgery and crutches for weeks.</p> <p><img class="right" title="hamstring_strain_illustration" src="https://kidshealth.org/EN/images/illustrations/hamstringSprain-400x400-rd1-enIL.gif" alt="hamstring_strain_illustration" name="2563-01102011_HAMSTRINGSTRAIN_R7.GIF" /></p> <h3>What Are the Symptoms of a Hamstring Strain?</h3> <p>Chances are that if you strain your hamstring while running, you'll know it immediately. You'll feel a sharp pain and possibly a popping sensation at the back of your leg. You won't be able to keep running and you may fall.</p> <p>Other symptoms of a hamstring strain include:</p> <ul> <li>pain in the back of your thigh when you bend or straighten your leg</li> <li>tenderness, swelling, and bruising in the back of the thigh</li> <li>weakness in your leg that lasts for a long time after the injury</li> </ul> <h3>How Is a Hamstring Strain Diagnosed?</h3> <p>A hamstring strain might be diagnosed on the sidelines by a trainer or when you see a physical therapist. Often, you'll also see the doctor for a hamstring strain. The doctor will examine your leg and ask you questions about how the injury happened and how much pain you have.</p> <p>The examination will help figure out what grade of strain you have:</p> <ul class="kh_longline_list"> <li><strong>Grade 1; this is a mild strain.</strong> You may experience some pain when you use your leg, but it will be minor and there will be minimal swelling.</li> <li><strong>Grade 2; this is a partial tear of one or more of the hamstring muscles.</strong> This may cause you to limp when you walk and feel some pain during activity. You might see some swelling and bruising, and you might not be able to straighten your leg all the way.</li> <li><strong>Grade 3; this is a complete tear of one or more of the hamstring muscles.</strong> You'll feel pain and not be able to straighten your leg all the way, and you'll notice swelling right away. Walking will be very difficult and may require crutches.</li> </ul> <h3>What Causes a Hamstring Strain?</h3> <p>A hamstring strain generally occurs as a result of muscle overload, such as when you are running and your leg is fully stretched out just before your foot strikes the ground. When your foot strikes the ground and all your weight is on it, the muscles can get stretched too far and they may start to tear.</p> <p>People who take part in certain activities that involve sprinting or jumping (like track and field, soccer, football, lacrosse, basketball, and dance) are more at risk of getting hamstring strains. These kinds of injuries are also more common in teens who are going through growth spurts. That's because the leg bones may grow faster than a person's muscles, pulling the muscles tight and leaving them more susceptible to getting stretched too far.</p> <p>Some of the more common things that can contribute to a hamstring strain include:</p> <ul class="kh_longline_list"> <li><strong>Not warming up properly before exercising.</strong> Tight muscles are much more likely to strain than muscles that are kept strong and flexible.</li> <li><strong>Being out of shape or overdoing it.</strong> Weak muscles are less able to handle the stress of exercise, and muscles that are tired lose some of their ability to absorb energy, making them more likely to get injured.</li> <li><strong>An imbalance in the size of your leg muscles.</strong> The quadriceps, the muscles at the front of your legs, is often larger and more powerful than your hamstring muscles. When you do an activity that involves running, the hamstring muscles can get tired more quickly than the quadriceps, putting them at greater risk of a strain.</li> <li><strong>Poor technique.</strong> If you don't have a good running technique, it can increase the stress on your hamstring muscles.</li> <li><strong>Returning to activities too quickly after an injury.</strong> Hamstring strains need plenty of time and rest to heal completely. Trying to come back from a strain too soon will make you more likely to injure your hamstring again.</li> </ul> <h3>How Can You Prevent a Hamstring Strain?</h3> <p>Keeping your muscles in good shape is the best way to prevent hamstring injuries. Here are some ways to help protect yourself against them (and other sports injuries!):</p> <ul class="kh_longline_list"> <li><strong>Warm up properly before exercise or intense physical activity.</strong> Jog&nbsp;in place for a minute or two, or do some jumping jacks to get your muscles going. Then do some dynamic stretching — ask your coach or an athletic trainer to show you how. After you play, do some static stretches where you gently stretch your muscles, holding each stretch for 30 seconds or more.&nbsp;</li> <li><strong>Keep your muscles strong and flexible year-round.</strong> Get regular exercise and adopt a good stretching program so your muscles don't get a shock when you do an intense workout.</li> <li><strong>Increase the duration and intensity of your exercise slowly.</strong> A good rule of thumb is to make sure you add no more than 10% each week to the miles you run or the time you spend playing a sport.</li> <li><strong>If you feel pain in your thigh, stop your activity immediately.</strong> If you're worried that you might have strained your hamstring, give it time to rest and don't go back to your activity until your leg feels strong, you have no pain, and you can move your injured leg as freely as the other one.</li> </ul> <h3>What's the Treatment for a Hamstring Strain?</h3> <p>The good news is that only the most severe muscle tears require surgery. Most hamstring strains will heal on their own or with some physical therapy.</p> <p>To treat a hamstring strain, follow these tips:</p> <ul class="kh_longline_list"> <li><strong>Use the RICE formula as soon as possible after the injury:</strong> <ul class="kh_longline_list"> <li><em><strong>R</strong>est.</em> Limit the amount of walking you do, and try to avoid putting weight on your leg if your doctor recommends this.</li> <li><em><strong>I</strong>ce.</em> Use a bag of ice or a cold compress to help reduce swelling for the first 48 hours after the injury. This should begin as soon as possible after the injury and then every 3 to 4 hours for 20 to 30 minutes at a time until the swelling is gone.&nbsp;Wrap the ice or ice pack in a towel. Don't put ice or ice packs directly on the skin because it can cause tissue damage.</li> <li><em><strong>C</strong>ompress.</em> Use elastic bandages or sports wraps to help support your leg and keep the swelling down if your doctor recommends doing so.&nbsp;Doctors recommend using elastic compression bandages instead of compression shorts because you can adjust the bandages as needed.</li> <li><em><strong>E</strong>levate.</em> When you are sitting or lying down, keep your leg elevated.</li> </ul> </li> <li><strong>Take pain medicine.</strong> Ibuprofen and other non-steroidal anti-inflammatory drugs (NSAIDs) can help relieve pain and reduce swelling in the leg.&nbsp;Some doctors prefer other medicines like acetaminophen. Talk with your doctor about what you should take.</li> <li><strong>Do stretching and strengthening exercises.</strong> Slowly adding some exercises can help to improve your leg's strength and flexibility (and, perhaps, prevent the injury from happening again). A doctor, athletic trainer, or <a href="https://kidshealth.org/ws/RadyChildrens/en/teens/pt.html/">physical therapist</a> can help determine when your hamstring is ready for these exercises.</li> </ul> <p>If you have a complete tear of one of your hamstring muscles or tendons, your doctor might want you to have surgery to reattach the tendon to the bone or fix the tendon.</p> <p>Not overdoing things is key when it comes to this type of injury. Many people have a hamstring strain come back because they returned to play too quickly. So follow your doctor's advice and don't push yourself or feel pressure to get back into sports or other activities too soon.</p>Distensión de isquiotibialesHay tres músculos que discurren por la parte posterior de la pierna, desde el muslo hasta la rodilla que ayudan flexionar la rodilla y a extender la cadera. Conjuntamente, reciben el nombre de músculos isquiotibiales. 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