There is certainly no shortage of pregnancy aches and pains, and sometimes it can be difficult to determine what exactly it is you are feeling and how to address it. One of the most common pains people experience is sacroiliac (SI) joint pain, but often we may not know that’s what it is, and in turn, could try to do things to remedy the pain that could actually make it worse. Here are some tips to help you identify if you might have SI joint pain, as well as what to focus on (and avoid) to help mitigate it.
What SI Joint Pain Feels Like
SI joint pain is felt in the backside of your pelvis (around your buttocks), and a tell tale sign is that it’s often felt on one side only. The pain is typically worsened by weight bearing activity, especially on one leg (like stair climbing, doing the elliptical machine, taking an exercise class, or even long periods walking). The pain can range from chronic and dull to sharp and shooting, sometimes radiating down your leg a bit. If you think you may have SI joint pain, speak with your doctor to get a diagnosis.
What Causes SI Joint Pain
The human body has two SI joints (a left and a right) located in the posterior pelvic region between the sacrum and the ilium bones (hence the name sacroiliac joint). The SI joints help to resist anterior pelvic tilt.
During pregnancy, the following factors can place added stress on these joints, which can lead to pain:
- Pregnancy Alignment Shifts: Pregnancy tends to pull the body out of neutral alignment. Specifically, the growing belly tends to tip the pelvis forward into an anterior pelvic tilt. It also shifts the body’s center of gravity (COG) up and out. Together, the tipped pelvis and shifted COG can cause the two bones intersecting at the SI joint to rub up against one another.
- Hormonal Changes: During pregnancy, hormonal changes – including the increase in the hormone relaxin – soften the joints, ligaments, and connective tissue to allow the body to adapt to carry a growing baby and to provide laxity and mobility needed to push a baby out. A consequence of this soft tissue laxity is that it often increases mobility and decreases stability, which can make the SI joint become hypermobile, which leads to pain.
- Increased body weight: The increased weight as pregnancy progresses elevates the forces going through the pelvis, which accentuates the two issues above.
Since some hormonal changes from pregnancy — including the impact of relaxin — continue into the postpartum period, the increased mobility and decreased stability could still be present after giving birth (there is debate as to how long this period lasts), so that is why SI joint pain can also occur in the postpartum period.
Moves to manage (or prevent) SI Joint Pain
Many people ask what stretches they can do to manage the pain. If this was muscle pain, there could be stretches that could alleviate it. However, we are talking about pain in a joint that is likely caused by hypermobility in that joint. Therefore, the keys to addressing it are to 1) decrease stress on the joint and 2) strengthen the muscles surrounding the joint to provide greater pelvic stability. You can accomplish this by getting your body into neutral alignment and strengthening your glutes, core canister, and lats. Here are some moves to help you do that:
- Get in neutral: Before we get into specific moves, it’s important to mention one critical concept that you should be mindful of throughout your day, and that’s your alignment. Pregnancy tends to pull your body into an “anterior pelvic tilt” (or excessive lower back arch) like you see below, which places added stress on the SI joint. Therefore, it’s important to train your body to stand and move in neutral alignment.
- 360° Breathing: Once you’re in neutral alignment, this is the first and most fundamental move to master to appropriately activate your Core Canister muscles. Master 360° Breathing, then incorporate it into every single movement from here on out.
- Pelvic Floor Activations (PFAs): One of the key responsibilities of the pelvic floor muscles is to assist in stabilizing the pelvis. Therefore, it’s important to target these critical deep core muscles with exercises we refer to as PFAs.
- Bridges: This is a great movement to target your glutes in a safe and effective way because it keeps your pelvis in a stable position. You can add challenge by placing a load on your hips.
- Clamshells: These are also great at targeting the glutes in a safe non-weight bearing way. Be sure to follow the technique pointers in this video to ensure you get the most out of the movement.
- Ground Pickup (or Deadlift): The Ground Pickup is essentially a Deadlift, but we refer to it this way because we want you to associate this action with how you pick things up off the ground in your daily life. If you can train yourself to naturally bend over properly (by hinging at your hips and maintaining a neutral spine), each time you do this, you’ll be strengthening your glutes and protecting your lower back and abdominal wall. Once you’ve mastered, increase the challenge by lifting heavier objects.
- Straight Arm Pull-Downs: This move targets your lats, which help stabilize your pelvis. You will need a resistance band for it. We recommend this Theraband variety pack, which includes three bands so you have a few different resistance levels to work with. You can tie it to something or use this very simple and inexpensive door anchor.
- Single-Arm Bent Over Row: This is also a great movement to target the lats to help stabilize your pelvis. It uses the same resistance band as above. If you need more support for your lower back, try this single arm supported row.
- Incline Plank: A plank targets the core muscles at the front of your body, training these muscles to help you resist that excessive lower back arch we showed at the beginning. During pregnancy, however, we must be very careful about managing intra-abdominal pressure and full planks performed with a larger belly will create too much intra-abdominal pressure. Therefore, beginning in the second trimester, we regress these by performing them at an incline. Get more guidance on planks by trimester in this post on planks during pregnancy.
Moves to Avoid
Because we are trying to stabilize the pelvis, you should limit single-leg weight bearing activity as much as possible when experiencing symptoms of SI joint pain. This includes things like the following:
- Lunges or step-ups: Single-leg lower body moves like lunges of any kind or step-ups/downs place your pevis in a less stable position. In general, you want to keep your weight evenly distributed over two feet (think squats, deadlifts, floor bridges, etc).
- Impact: Impact moves like running, jumping, or other ballistic moves will likely aggravate pain given the hypermobility in your pelvis. Your body will likely tell you these moves are not appropriate.
- Traditional cardio machines: Machines like the elliptical, Stairmaster, and treadmill all promote single-leg activities, so it is best to avoid these.
- Crossing your legs when seated: Again, we want to keep your weight evenly distributed, which includes when you sit. Try to sit tall with both feet flat on the floor. Also avoid any deep single-leg hip stretches like pigeon pose or figure four.
- Any move that triggers pain: Sometimes the pain triggers are different for every individual, so try to pay attention to the activities that trigger pain for you. This can sometimes be tricky because you may not feel the pain until the next day, so you may have to think back to what you did the day prior.
- (Use caution with) single-leg daily activities: Activities like walking, stair climbing, and getting up and down from the ground are single-leg activities. Of course, it’s not possible to completely avoid these activities, and we wouldn’t want you to either. It’s important to keep moving. You may just want to limit extended periods of walking or stair climbing when pain is severe. Also, when getting up off the ground, step up on the side that does not hurt.
If pain becomes too bothersome, it’s best to work with a personal trainer or physical therapist who has knowledge of this condition and can design a specific program for your needs, like our PROnatal Personal Trainers who specialize in working with conditions like SI joint pain.
“I discovered PROnatal Fitness Personal Training when I was suffering from sacroiliac joint pain in my second trimester. My trainer brought extraordinary expertise and heart into our work together. Not only did I solve my SI joint pain, but I grew even stronger than I was BEFORE my pregnancy!” Natasha M, First-Time Mom
Download a FREE Guide
For more evidence-based information to help you exercise safely and effectively during pregnancy and postpartum recovery, download our FREE Movements to Avoid Guide. You’ll learn the movements to avoid or regress by trimester (or postpartum stage) to mitigate pregnancy pains & injuries and expedite your postpartum recovery. Then, you’ll receive education on what to start doing instead for a safe and truly effective workout.
Health & Fitness Professional Education
Are you a fitness or health professional interested in learning more about managing (or preventing) common pregnancy-induced pains and injuries, like SI Joint Pain? Our Pre/Postnatal Performance Training Specialist Course covers this topic in detail — helping you understand the underlying causes and how to manage or prevent a host of issues — from SI joint pain, to low back pain, diastasis recti, pelvic floor dysfunction, and many more.