All you need to know: Cortisone.

In orthopedic offices cortisone shots are offered to patients every day. What exactly is a cortisone shot and who needs it? What are the risks and benefits? 

Let’s start at the beginning.  Cortisone is the name used to describe a group of steroid medications we inject into the body. In orthopedics a cortisone shot is given into your knee, shoulder, finger etc… basically any joint space or area. Other names you may hear are methylprednisolone (Depo-Medrol), Triamcinolone (Kenalog) and betamethasone (Celestone). 

I describe these injections to my patients as strong anti-inflammatory medications that are injected into (as one example) your knee.  They work similar to anti-inflammatory medicines you take by mouth (like Advil or ibuprofen) by decreasing inflammation.  However, the mechanism of how it works is different. Also, since we are directly injecting them into the area sometimes they are more effective. 

What does the cortisone actually do? I want to make this super clear- a cortisone injection does one thing only- decrease pain. Cortisone does not fix the injury, repair the joint it is injected into, grow back cartilage or any other magic. Just pain relief. 

How is the shot usually given? Most often cortisone is mixed with a standard numbing medication and injected using a syringe and needle. The numbing medication helps short-term with the pain (just like going to the dentist and getting numb before they pull a tooth) and it also helps distribute the cortisone evenly. My standard recipe is 40 mg of Kenalog and 4 mL of 1% lidocaine in the knee.  Another doctor’s recipes may differ based on their preferences and experience. 

When are cortisone shots needed? That is a difficult question without knowing the specifics of your injury or problem.  That said, the most common thing injected with cortisone are the things that cause us pain. Makes sense, right?  But also keep in mind all things that cause pain do not get a cortisone shot.  One very common use for cortisone is in the treatment of osteoarthritis. Osteoarthritis is the degenerative breakdown of cartilage (a whole topic we will discuss another day) but simply put it is wear and tear on a joint surface.   When someone has pain from osteoarthritis cortisone is often the first go-to for relief. Cortisone also can help with pain associated with meniscal tears, labral tears, bursitis, and several other conditions. Be mindful that there are certain areas of the body, such as tendons, ligaments or soft tissues spaces that either should not have cortisone injected at all or it is at best questionable to do so. 

Who needs one? That is a great discussion for you to have with your doctor!  I would ask the following: What are the goals of the injection? How can I optimize the pain relief to make it better long term?  What are the risks, side effects or alternatives? Remember although very well tolerated any medication we give isn’t a free pass and has risks and side effects. You need to know these ahead of time.  

Here are some of the ways I answer the above. First, how to optimize the pain relief?  I optimize the pain relief after giving a cortisone shot by focusing on the overall function of the body.  If you have a shoulder problem, I want your shoulder to be functioning as close to a normal shoulder as possible.  This is often hard to do! Your shoulder moves differently when you have pain.  Without guidance it is nearly impossible to fix.  Also, with a shoulder problem you are limited in your ability to use that arm normally which can affect other body parts.  This is called compensation.  It can include how you hold your arm, the alignment of your neck or back, and even how you move the other arm. We need to break this cycle for your pain to go away for good!  Cortisone can help with the pain but if the movement pattern is not improved it isn’t a long-term solution. Why? Your body has gotten accustomed to moving the injured way.  If you get cortisone and are having less pain, this is a great time to try to optimize the shoulder movement to keep the pain away. I often recommend physical therapy for this.  Also please note- physical therapy can be fantastic even without a cortisone shot. 

Next, what are the risks? Every medication has risk. I always remind patients every needle stick has a risk of bleeding and infection. The skin is your safety barrier and sticking a hole in it means breaking that barrier.  When sticking a needle into the skin there are structures below the surface.  Depending on where the needle is headed (more for certain injections than others) we need to be aware of blood vessels to avoid bleeding.  These are both very small risks but depending on the person getting the injection.  Another important risk I always discuss applies to patients with diabetes.  We know cortisone injections can transiently increase blood sugar for about two weeks after the injection.  If you are a well-controlled diabetic you can likely still have the injection, but your physician should have you monitor your sugars closely and report any issues. Unfortunately, if your sugars are out of control before the injection it may not be safe to proceed.

How long does the pain relief last?  That is highly variable.  I tell my patients the medication effect lasts a few months. That is how long the medication itself is altering the insides of joint.  However, if you do more (refer back to the above about PT and shoulder pain), then it may last much longer.   Another possible and important ‘risk’ to be clear on is sometimes cortisone does not provide any pain relief at all. 

What if I need to get several cortisone injections to maintain pain relief? This again is variable but could be a concern.  Let’s revisit the knee example for osteoarthritis.  You as my patient have had one the injection every few years and otherwise have done well!  You are able maintain your exercise program, stay at a healthy weight and are maintaining cardiovascular fitness… to me, this is great! Those benefits clearly outweigh the occasional injection.  However, if you notice that you are having repeat injections and the time between them is getting shorter to maintain pain control this may not be the best solution any longer.  There is some data that suggests repeated cortisone injections may advance breakdown of the tissue faster than normal.  So, we must proceed with caution.  

Overall injections of cortisone are safe and well-tolerated in many and can be extremely helpful in alleviating pain. If you have questions about cortisone or whether you are a candidate for one it may be time for an educated discussion with your orthopedic physician.

The ACL Tear.

As we approach the end of football season, there is one injury that we have heard of several times throughout the year (and past years as well). The ACL tear.  Most sports fans have seen this listed on the injury report and heard the announcers talk about concerns for this when a player goes down on the field, but what is it? Why is it a big deal, how does it happen, and what is typically done about it?  

First, knowing a little anatomy of the knee is important. The ACL – or anterior cruciate ligament – is an important structure inside your knee joint.  We have 4 ligaments in and around that area, named for where they are located. Anterior (front) and posterior (back) cruciate ligaments, and medial (inside) and lateral (outside) collateral ligaments.  Today we focus on the ACL because it is usually the most ‘tragic’ when injured in sports. By tragic, I mean the one that is the most worrisome for an athlete because of the long treatment and recovery process that often alters one’s career short and long term. 

The ACL connects the bottom bone in the knee (tibia) to the top bone of the knee (femur) from front to back.  It plays a key role in stabilizing the knee. In medicine we would say it “resists anterior translation of the tibia on the femur.”  Stick with me here… this means in regular language that it stops the bottom bone of the knee from sliding forward in relation to the top bone during normal movement, aka inside the knee joint where it bends.  This bending is what allows us normal knee motion needed for walking, running, jumping, playing.  But we need something to help keep the bones attached to one another or else the knee may feel unstable (jelly-like) when we put stress on it.  [Think of the knee as a door hinge where the ACL is the pin that connects the two pieces of the “hinge”; without this the door can swing open and closed gently, but if it’s pushed too hard the hinge may not line up properly and may become damaged].  Not an ideal situation if one is interested in getting back to doing higher impact activities like playing football. 

If the ACL is torn the knee becomes unstable because the bottom bone can shift away from the top bone.  The cool thing the human body is that there are often redundant systems.  For the most part (although not always for every person) normal walking and low-impact day-to-day life can still be achieved without the ACL because the other ligaments and muscles around the knee can pick up the slack to provide stability.  This means even without an ACL, for daily life activities, many people move about fine.  The problem is with any sudden or shifty movements, such as cutting in sports or in high-impact jobs like law-enforcement or firefighting where folks are required to do movements that aren’t straight forward or backwards. These types of movements are more complex and require more stabilization, so without an ACL the knee can feel unstable and even give out.  For football and other sport athletes, one also would not get the control or explosive power she or he needs to play.   

An ACL tear most likely occurs when the leg is forced in a way that stretches the ligament too far.  Remember, the ACL blocks forward movement of the bottom part of the knee.  Consider a  a football player whose foot is planted to the ground when his knee gets pushed backwards, pushing the top bone away from the bottom bone. Pop!  The ACL is overstretched and gives way.  This is just one example, and there are of course other ways this happens.  Sometimes it involves a collision with another player (as described above) and sometimes it involves getting the leg in an awkward position when a person is running or jumping with the knee buckling inwards/backwards due to the force of the jump or a bad landing.  In this case, it is simply the lack of control and force of the jump landing or cut that causes the tear.  We tend to think of these “non-contact” tears occurring most frequently in young female athletes (maybe a teenage basketball player) that hasn’t developed full hip/knee control. 

The tearing of an ACL is an abrupt injury and not usually subtle.  Sometimes people hear a pop (but not always), feel a pop, have sudden onset of significant pain, and usually fall to the ground.  Most of the time the injured can’t walk easily (if at all) and don’t usually keep playing the game after.  The knee swells up from the inside due to the trauma (effusion).  I usually ask patients if it swelled up like a water balloon as an analogy.  A former mentor of mine taught me when I was learning about knee injuries that a young person running or cutting during sports with a sudden burst of pain with a pop in the knee and large swelling is an ACL injury until you prove otherwise.  This still rings true for my patients today.  #mentor

To diagnose the ACL tear we first talk about what happened when the injury occurred in great detail.  Then, we do an office examination of the knee, as well as the hips and lower legs.   Looking at the other nearby joints is important! Just because it seems that it might be an ACL tear it doesn’t always mean that is our answer.  We complete a few special maneuvers that help clue us in to what possible problem could be happening inside your knee. These maneuvers are helpful to distinguish other injuries that present in the office like an ACL tear.  This exam also helps us determine what next steps to take or if there is concern for other associated injuries (ACL tears often occur with other injures such as MCL tears, meniscus problems, and bone or cartilage injuries).

So you tore your ACL, what now?  Since it is such a crucial ligament for knee stability, most highly active people or athletes should discuss surgery to repair or reconstruct the ligament in the knee.  It does not grow back. It does not scar into place or heal. That said, it is important to note that older patients or people who are less involved in side-to-side/cutting sports or activities may not need surgery.  Be sure you have a discussion with your doctor about what the benefits of surgery are for you, the associated risks of the procedure, as well as the expected long term outcomes.  We practice medicine using the guide of high quality research, and if the studies show that you may do just as well without surgery, that may be the best way to treat your specific injury. Most important is to have these discussions with an orthopedic sports trained surgeon.  They will discuss options, the optimal timing to have surgery if it is thought to be best for you, and also very importantly your rehabilitation and expectations for recovery.  

Whether one has surgery or is treated without operation, he or she will need extensive physical therapy/rehab.  It takes many months for one to get back on the field!  One has to be patient.  For professional athletes that have dedicated athletic trainers and rehab specialists, these are season ending injuries. Often with great rehab, they can return in 6 months (at the earliest) though it can take 1 or more years to reach the prior level of sport.  But these are gifted individuals with many many resources.  For the average injury, it will be at least 1 year before one may feel 100%. And keep in mind, once a person has had an injury, and then had surgery, it is quite possible the knee will never feel 100%.  [Stay tuned for my article discussing preventing injuries like ACL tears.]

Stay healthy-