Friday, September 13, 2013

Science Friday: Diagnoses and Discoveries About Hips

Note: This is not a typical Science Friday, but Part 2 in the unexpected series identifying what is wrong with RunnerTeal.  (Let’s hope for no Part 3 anytime soon.) 

Last week I told you about my not-so-hip hip and my upcoming doctor’s appointment.  Everyone’s well wishes and thoughts paid off, as I do not have a surgery-requiring labral tear, but tendonitis in my hip flexor instead. (Yippee!!) Tendonitis means no running for a few more weeks, being forced to confront my hatred for biking, and no fall marathon. (The Philadelphia Marathon has now stolen my money for the last two years. I’ll get you back some day, Philly…) But, it isn’t surgery, and that is a huge relief that indisputably makes a few run-less weeks and hours of boring biking seem like a blessing.

Given the crash course I’ve had the last few weeks, I thought it might be nice to share some of the things I’ve learned about hips, both their tears and tendons.*

The hip is a ball and socket joint, like the shoulder, where the head of the femur (the ball) sits in the pocket (called the acetabulum, the socket) of the pelvic bone. This allows for motion in almost all directions and allows us to walk, jump, and of course, run. It absorbs a lot of forces; when we run, the forces are many times our body weight. The hip is the superstar of joints.

The acetabular labrum is the cartilage that surrounds the socket, helping to keep the femur securely in place. Running repeatedly over years and years (as marathoners are wont to do) can cause the labrum to wear thin and tear. (This can also occur more instantaneously in contact sports or accidents.) The pain occurs on the inside of the hip and it may present as stiffness and tightness or it may feel like it’s clicking or catching. The latter is the symptom that had me (and Dr. #1) convinced I had a tear. If the tear is bad enough, arthroscopic surgery may be required, where the torn portion is cut out. After seeing my x-ray and hearing my description—when the pain was worst, what time of day it hurt, etc.—my doctor was less than convinced that I had a labral tear, and did an ultrasound to check. If I had a tear big enough to need surgery, he’d see it on the ultrasound. Fortunately, he found a healthy looking labrum! He diagnosed me with tendonitis of the hip flexor instead.

The hip flexors are a collection of muscles that mainly function to pull the leg and knee upward, towards the body. Two of these muscles, the iliacus and the psoas major (together referred to as the iliopsoas), are the most susceptible to hip flexor injuries, and tendonitis can occur in the tendons associated with these muscles. (Tendons attach muscles to bones.) When under repeated stress, tendons can degenerate and become inflamed. (The suffix “-itis” means inflammation.) The stress could come from doing too much too soon or from overuse, pushing too hard for too long—again as marathoners are wont to do. If the tendons are inflamed or aggravated, most likely the surrounding muscles are as well. During my appointment, the tightness and stress on these muscles was obvious. The psoas major connects the lumbar part of the spine (the lower back) to the front of the pelvis. When my doctor pressed on my lower back, I could feel pain in the front of my hip—a strange sensation that convinced me he knew what he was talking about. (An interesting side note: only about 50% of people have a psoas minor. It seems not to matter whether you do or do not have this weak muscle.)

Treatment for tendonitis includes anti-inflammatories, physical therapy, massage, and, of course, the most hated treatment: a break from running. The tendon is able to heal itself; the purpose of the initial inflammatory process is to promote healing. As with all injuries, the trick is patience: let your body work its magic (and have a really good PT to help coax it along.)

Here’s a quick run down of other hip issues that affect runners:

Bursae are lubricating sacs that cushion areas where muscles and tendons slide against bone; bursitis is an inflammation of these sacs. Trochanteric bursitis will cause a dull ache or rubbing on the outside of the hip. Again, the treatment includes rest and ice/anti-inflammatories.

Stress fracture:
In the hip region, the most common place for a stress fracture is the neck of the femur. A stress fracture causes a throbbing pain that gets worse with more running and will probably leave you limping. If you can’t hop on the affected leg, a stress fracture is probably the issue, and you should immediately stop hopping and stop running. Here the treatment is 6-8 weeks of no running.

Iliotibial (IT) band syndrome:
This can present as a jabbing pain on the outside of the knee, but it starts up in the hips. IT band syndrome is from irritation of the ligament that runs along the outside of the thigh from the hip to the shin. You can get it from doing too much too soon (always trouble!) or even from running the same direction on the track (too many left turns!) IT band syndrome can be helped with rest, ice/anti-inflammatories, and massage before starting a program that strengthens the surrounding muscles.

Piriformis syndrome:
This is literally a pain in the butt, as pain shoots from the butt down the back of the leg. It can be treated with massage and physical therapy.

Staring at images of skeletons, muscles, and joints and learning all the things that can go wrong makes me appreciate how amazing it is that, most of the time, things work smoothly to allow us to move around. And, someday soon, to run again.

*Note: I am not a doctor, just a scientist who likes to teach herself things. You should see an actual doctor if you’re having hip trouble.

Dream big, 

Thursday, September 5, 2013


I have never been injured. 

When I admit this to someone, it is not to brag. Rather, I confess it sheepishly, full of guilt, fully aware that I don't deserve to be an injury-free runner, fully aware of all those runners who have been frustrated by injury for years. (My sister, who will always be a far superior runner to myself in my eyes, has been hit with one too many injuries. Why can I run and she can't? It isn’t fair.) 

In high school I had a problem in my foot that flared up a few years later while training for my first marathon. Before my first Boston, my Achilles started acting up. In these cases, the remedy was a few days off and then carefully resuming running. I've never been to the doctor for these minor glitches. 

When asked how I remain injury free, I list the usual reasons: I watch my mileage and have built it up slowly over years. I take careful inventory of what hurts and stretch/ice/rest when anything feels off. I know what works for me and what my body can handle. But honestly, I'm just lucky. I've broken the ten percent rule. I've gone weeks without a day off and felt a sense of pride about it. Busy mornings mean skipped stretching and icing. The injured runners reading this now hate me. Don't worry. Karma will get me soon. Maybe it already has. 

While training for this spring's Boston, my hip acted up a bit. Some days it would feel tight and go away, some days it would be a quick pang of pain, and then disappear. Looking over my log, there is one day it bothered me enough to cut a workout short. Instead of logging 15, I cut it to 9. Still, I ran 9 miles; I wasn’t debilitated. I worried about it a bit, but it wasn't serious enough to slow me too much. 

After Boston, I took off more time than usual. I did a short test run; the hip was still tight, so I took some more days off, and repeated this process a few times. By June, I was aching to run and getting out of shape. I started slowly and built back my mileage. My hip made its presence known a few times, but nothing to sideline me. I religiously did hip exercises and iced it. It seemed to be going away. Three weeks ago, I did a tempo run that wasn't a complete disaster. I was coming back. 

The next day, while visiting Brother in Philly, he took me on a run along the river, following the same course the marathon would. It was a gorgeous day, the kind of beautiful morning that makes you glad to be a runner. My hip was tight in the beginning, but loosened up. I hit a pretty decent pace, and felt happy with it. Afterwards, I did my stretches, grabbed some ice and hopped in the car for a wedding in the Hamptons. 

On the drive the hip stiffened and throbbed. But after we got out of the car, it felt fine. We danced and celebrated, all fine. The next day, Husband and I tried to go for an easy run. It tightened immediately. “Maybe it will loosen up like it usually does,” Husband said. But I couldn't even make it two steps to try and see. I was hurt.

I took a few days off before testing it again with an easy jog. After five minutes of pain-free running, it tightened. I could have pushed it to see if it would stretch out like I have in the past. But remembering not being able to take two strides a few days before made me realize it wasn't worth it. At that moment I switched from someone who defied injury to someone who was injured, and accepted it. Time to see the doctor.

I called the best hip doctor around, as recommended by a teammate. I couldn’t get an appointment for three weeks. Three weeks? That seemed like an eternity. I am supposed to be training, what the heck do I do with myself?

After the aborted test run, I cross-trained to maintain sanity. On Friday (day 7 of no running), I saw my doctor to get a referral to Dr. Hip Specialist. She thinks it may be a labral tear, to be confirmed by the specialist with an MRI. She warned me a tear could require surgery, although it may be possible to rehab it with physical therapy. She also said I can run in the meantime, provided I decrease mileage and avoid hills. I can run? This happy news clouded the rest of the appointment. But as I walked away, the reality of what else she said dawned on me. Possible surgery!?

I was able to run for five pain-free, glorious days before the tightness was back and I was sidelined again. Tomorrow I have my appointment; the three weeks of waiting are over. I’m eager to get a real diagnosis: will I need surgery? Is cross-training aggravating it? When and how can I get back to running? I’ve come to accept my immediate goals may need to change, but I want to get started fixing this as soon as possible, so my long term ones don’t need to.

Dream big,