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February 21, 2011

Collateral Damage

The Injury Beat Goes On

by Corey Dawkins and Marc Normandin

Welcome to Collateral Damage, the new home for BP's injury beat. As you’ve probably gathered from the byline above, my name is Corey Dawkins. I’ve trained in sports medicine and have served as an Athletic Trainer at Division I and Division III schools (Division II has been holding out on me), as well as one of the leading sports medicine clinics in the nation. In this column, which I will be co-authoring with BP stalwart Marc Normandin, we hope not only to help you keep up to date with the latest injury news, but also to help you understand the nature of each ailment, what each rehab process is like, and how debilitating each injury may be to the performance of the player in question.

In the coming weeks, Marc and I will also be presenting revamped Team Injury Projections. These will focus more on team analysis—i.e., a review of 2010’s injuries and the impact of potential injuries on the current squad—and we will complement them with player listings separated by position. We will start rolling these out soon and will complete the series before Opening Day. With that out of the way, it’s time to get to the injuries.

Justin Morneau (Concussion)

Justin Morneau has been dealing with the effects of post-concussion syndrome since July 2010. He was recently cleared to participate in all spring training drills, which is one of the few high points on what has been a long journey for Morneau—one that was concerning at times given the duration of the symptoms. The effects of concussions and sub-concussive events have been gaining ground in the media over the last several years. This trend peaked during football season after a rash of concussions suffered by current players followed complaints from retired players regarding head injuries and associated long-lasting damage. Baseball’s concussion issues haven’t garnered the same level of media attention, but the sport still carries a risk of concussion with every play.

Morneau found this out the hard way last July 7, after taking a knee to the head while sliding into second base. There is no telling what causes the length or severity of the symptoms, but anecdotal evidence suggests that the forces that produce a rotation of the head along with movement in the two planes (imagine whiplash, but with a rotational component) increase the possibility of severe symptoms. That's exactly what happened with Morneau: his head was bent forward, towards his left shoulder, and it rotated to the left as he was hit by John McDonald’s knee.

The brain is like any other body part in that when it gets injured, it needs rest and time to recover. In the case of something as simple as a mild ankle sprain, some people recover in four days, while others might require 13—it varies from person to person. Now imagine how complex the brain is, and it becomes apparent why recovery time from concussions can be even more individualized. Research is being done concerning possible direct treatments for concussions, but the majority of treatments involve treating the symptoms. Post-concussion syndrome symptoms can range from headaches and difficulty with cognitive functions such as concentration and memory (different from amnesia) to emotional and behavioral symptoms. These are usually addressed through a combination of medications, cognitive rest, physical therapy, behavioral therapy, and even very light exercise.

In order to return to the playing field following a concussion, a player must clear a succession of regimented hurdles while remaining symptom-free at every step along the way, to ensure that it’s safe to resume participation in practice and games. The process begins after the player has been symptom-free (including headaches) for a period of time, followed by light cardiovascular exercise, usually on a stationary bike. The next step involves a combination of very light weightlifting and jogging on a treadmill, which progresses to heavier weights, sprinting, and eventually baseball activities. This timeline, like the symptoms themselves, is highly individualized and must be monitored closely.

It's a good sign to see Morneau resuming baseball activities, even if he is not cleared for games yet. That will obviously be the final step, but at least he appears to be inching closer with each passing day. Any setbacks will cause a change in this timetable, but for now, he appears to be on track to return to the Twins’ lineup.

David Aardsma (Labrum surgery, left hip)

After continued discomfort in his lower left oblique and hip in the offseason, David Aardsma underwent surgery earlier this winter to repair the labral tear in his left hip. Healthy pitchers usually have a decreased range of motion (compared to their dominant hip) in the non-dominant hip. In the right-handed Aardsma's case, the left hip with the labral tear was his non-dominant one. This hip helped to provide the power during his delivery. When the hip rotation decreases from either bone-related or soft-tissue restrictions, ball velocity takes a hit as the pitcher compensates by throwing across his body.

There are a limited number of pitchers who have undergone surgeries on their non-dominant hip, but the Baseball Injury Tool database does include a few, including Jason Isringhausen in 2004 and Jason Vargas in 2008. Aardsma is expected back in approximately one month, but it’s tough to gauge just how effective he will be based on those comps: Isringhausen required a second hip surgery in 2006 and the strides he had made in improving his control seemed to vanish, while Vargas has been both healthy and effective since returning from his procedure. In the meantime, Brandon League (3.41 ERA, 7.2 K/9, 2.3 K/BB projected by PECOTA) will fill in for Aardsma as the team’s closer.

Jeff Keppinger (Sesamoid removal, left foot)

Sesamoiditis can be an extremely painful condition. It is an inflammatory condition of the sesamoid bones and the surrounding soft tissues near the base of the big toe. The sesamoid bones impact the ground with every step, and therefore the inflammation can be quite painful, but it rarely leads to surgery. Even though sesamoiditis can be caused from fractures to these bones, it is typically more closely related to impact and overuse activities, with a higher prevalence in ballet dancers and people with elevated arches. Clearly, Keppinger is not a ballet dancer (at least not during the regular season—the Astros’ lack of postseason play gives him plenty of time for extracurricular activities), but his foot type may lead to undo stresses to the area.

Sesamoiditis usually responds to a combination of physical therapy and activity and footwear modification, but rarely leads to surgery except in severe, chronic cases. There were reports of a stress reaction in the sesamoids, which is a pre-cursor to stress fracture, but the treatments remain the same. Keppinger's symptoms did not respond to these conservative treatments, which started last fall after he was placed on the disabled list in August. He subsequently underwent a relatively simple procedure in January, which involved removing the bone, debriding the affected area, and then suturing both the tendon and the skin.

Keppinger will likely be out for the first month of the season to allow the area to heal and retrain his foot to handle the newly distributed forces. Once he returns, there shouldn't be any concerns for re-injury. That’s good news for the Astros, who don’t have the infield depth to cover Keppinger’s absence for very long.

Rich Harden (Latissimus soreness)

Rich Harden has an injury history a mile long, and he is already in the news for unfortunate reasons this spring after experiencing soreness in his latissimus dorsi below the shoulder blade. He altered his mechanics after a strain of the gluteal muscle and shoulder soreness in 2010, but there is a very fine line to tread with such corrections. Harden is expected to miss at least a few weeks in order to keep this from progressing into something much worse that will keep him out even longer—for instance, in 2010, Jake Peavy had his latissimus dorsi muscle detach from the bone—and effectively flush Oakland’s $1.5 million down the drain. Having dealt Vin Mazzaro to the Royals and let Justin Duchscherer walk, the A’s don’t have as many options to spot start as they did in 2010, so the health of Harden is important to this club.

Omar Beltre (Spine surgery)

Beltre underwent surgery to repair a condition of the spinal cord called spinal stenosis. This is a narrowing of the spinal canal to the point that it compresses the cord itself. It can result from multiple causes, ranging from infection to herniated discs to congenital conditions, and can affect any level of the spine, though it is most often seen in the cervical and lumbar regions. We hear about spinal stenosis more often in football, where it can be a disqualifying condition due to its association with traumatic spinal cord injuries. In baseball, however, there doesn't appear to be any record for surgical intervention to correct the condition in an active player, so the return-to-play timeline is more of an estimate than empirically based. Beltre is expected to resume baseball activities in roughly six to eight weeks, but he will likely require another four to six weeks on top of that before being seen in any games.

Dana Eveland (Left Hamstring Strain)

Scott Olsen (Left Hamstring Strain)

The first week of camp often produces several strains, and this year is no different. After pulling up lame while running sprints this week, Eveland is expected to miss a few weeks with a mild-to-moderate left hamstring strain. Hamstring strain injuries come with a straightforward rehabilitation and recovery process, but they still have a propensity for re-injury for physiologic reasons. While Eveland’s recovery is expected to last a few weeks, Olsen is expected back in about one week after stopping workouts on Thursday. His rehabilitation should be quick, and he'll be ready to go in Grapefruit League games.

Flesh Wounds

Jeremy Sowers underwent the first season-ending surgery of the year to repair his left rotator cuff. He won’t be back for 9-12 months, which keeps the disappointing former first-round pick from reaching his former promise once again… The shoulder MRI on Jake Peavy came back clean, and he has been throwing well while recovering from his own latissimus injury... Brandon Webb reports “normal soreness” in his arm after throwing recently—we’ll have to see how it corresponds to his velocity and sinker movement to tell how he's really doing… Dustin Pedroia has been on the field taking part in drills without any limitations and appears to have recovered from surgery on his left foot… Adrian Gonzalez isn't quite ready for full participation in camp but is progressing well from surgery on his right shoulder… An MRI on Francisco Liriano came back clean. The southpaw’s sore left shoulder will be handled very carefully—no one on the Twins wants to lose the magic he recaptured in 2010, and the pitching staff can’t afford to take a hit like that... Derrek Lee is about 7-10 days away from taking batting practice following surgery on his right thumb in November… Chipper Jones, recovering from an ACL injury that ended his 2010 campaign, has been taking grounders and batting practice and recently starting running the bases at full speed. The Braves will likely take it slowly at first, but he should be ready for Opening Day… Eli Whiteside underwent an MRI on his elbow and was found to have only inflammation... Jim Edmonds announced his retirement on Thursday after a comeback attempt following Achilles surgery. Jay Jaffe, please start the Hall of Fame campaign good and early for Mr. Edmonds, so he gets the enshrinement he deserves.

Corey Dawkins is an author of Baseball Prospectus. 
Click here to see Corey's other articles. You can contact Corey by clicking here

45 comments have been left for this article. (Click to hide comments)

BP Comment Quick Links


Welcome aboard, Corey! Really looking forward to more of your work.

Be prepared for the onslaught of WATG (What About That Guy) questions that drove Will to the brink of insanity.

Feb 21, 2011 02:54 AM
rating: 9

How about Jake Peavy?

Feb 21, 2011 05:30 AM
rating: -1

For some reason, his name didn't highlight: "The shoulder MRI on Jake Peavy came back clean, and he has been throwing well while recovering from his own latissimus injury."

Feb 21, 2011 05:34 AM
rating: 0
Marc Normandin

He should be highlighted now. Just jump from ellipse to ellipse in the Flesh Wounds section! :-)

Feb 21, 2011 06:29 AM
rating: 0

How worried should the Phillies be about Cliff Lee's sore side?

Feb 21, 2011 06:36 AM
rating: 0
BP staff member Corey Dawkins
BP staff

Thanks for the welcome. Regarding Cliff Lee, you shouldn't be too concerned. By all accounts it was minor and he is throwing in camp, just a little less than the others.

Feb 21, 2011 06:53 AM
Rick Lopez

"Flesh Wounds." +++

Feb 21, 2011 06:47 AM
rating: 4

Good to have you on board. I wonder if you might want to do a few more general articles on topics like the impact of wrist injuries on hitters and elbow and shoulder injuries on pitchers. I know I would find this useful and interesting - almost to have some sort of reference on the impact of the different types of injuries that players frequently suffer.

Feb 21, 2011 06:59 AM
rating: 3
BP staff member Corey Dawkins
BP staff

We do plan on putting together articles on specific injuries at some point in the future. Right now we're working feverishly to get the Team Injury Projections finished.

Feb 21, 2011 11:46 AM
BP staff member Mike Petriello
BP staff

Great start, guys - very much look forward to this. Always like an article that teaches me something, and until today, I had no idea that a 'sesamoid' was a real thing.

Feb 21, 2011 08:06 AM
BP staff member Kevin Goldstein
BP staff

Absolutely. I thought Sesamoid was a twitter client.

Feb 21, 2011 08:35 AM

I suffer from chronic sesamoiditis, due to congenital bunions (my feet scared all the other kids at the pool, and continue to do so to this day).

The best way I can describe the feeling of the inflammation is that it's as if you're walking on a bruise with each step you take.

Orthotic inserts alleviate much of the problem, most of the time, but on days featuring a lot of walking (and I'm an urbanite without a car, so that's fairly frequent) the dogs can really start to bark.

I can see that an athlete, if the situation doesn't respond to treatment, would elect surgery.

Feb 21, 2011 10:42 AM
rating: 0
BP staff member Michael Jong
BP staff

I honestly feel like one of the best parts about this is that I get to apply some of the knowledge I'm learning in medical school right now to the things I'll be reading here from Corey and Marc. When I read "sesamoid," I immediately remember recognizing the term and I quickly associated it with the big toe, and reading the blurb about it just enhanced my understanding about the injury and medicine in general. Quietly awesome moment for me.

Really looking forward to all the work debuting here soon, can't wait. Injury analysis is one of the frontiers of sabermetrics and is of course also important for the proper treatment and analysis of players.

Feb 21, 2011 18:34 PM

Re: concussions. It seems like baseball takes its concussions seriously, and we see players like Cuddyer, Morneau and Bay take months to return to play. In football, we see players come back the next week. Is there something particular about baseball as an activity or the training that medical staffs get that can explain this (beyond football not caring about head injuries until a little attention this year)?

Feb 21, 2011 08:22 AM
rating: 0
BP staff member Corey Dawkins
BP staff

From a medical standpoint there isn't any differences in training or attention since everything is individualized. The difference lies in the culture of the different sports. Football players often would hide symptoms (headaches, light-headed, etc) while baseball players would be more likely to report them for many different reasons.

Feb 21, 2011 12:47 PM
BP staff member Corey Dawkins
BP staff

When I say individualized I'm talking about the players symptoms and treatment, not the medical staffs. All the medical staffs receive the proper training so there wouldn't be any differences there.

Feb 21, 2011 12:49 PM
BP staff member Neil deMause
BP staff

My sense, just from reading Malcolm Gladwell in the New Yorker, is that concussions are taken less seriously in the NFL because if you pulled a player every time you thought he was concussed, you'd run out of linemen by halftime.

Would love to hear Corey's thoughts someday on the "Should football be legal?" question, but that's probably outside the scope of this discussion thread.

Feb 21, 2011 16:36 PM
BP staff member Michael Street
BP staff

Welcome, Corey! Loved this article and your responses in the comments area.

My .02 on the Football vs. Baseball concussion difference also has to do with the nature of the sport itself. While some football players (e.g., linebackers) need to focus on fine-grained things (like the QB's eyes), it's a bit easier to play football with wonky vision.

Distinguishing pitches, on the other hand, is hard enough to do with good eyesight and requires extremely fine-grained vision. I can't imagine doing it with blurry vision, vertigo, or any of the other things that come with concussions.

So not only might training staffs hold out a ballplayer longer, any problems he might be having with balance or vision are much more accentuated, and much more obvious in a sport (as DeNiro/Capone reminds us) that unites individual effort at the plate with team play. Hard to hide your struggles when the entire stadium's watching you perform solo.

Feb 22, 2011 12:41 PM

In terms of feature articles, I'd love to see a series of article about myths vs. reality of what puts young pitchers at risk. For instance, is the Verducci Effect substantiated by data?

How about a feature on the current debate about why so young pitchers (who don't suffer any obvious injuries) lose velocity (e.g. Bumgarner, Lincecum, maybe Porcello)? I'm particularly interested in any views you might have about the "Long Toss" (e.g. Rangers) vs. ""120 program" (e.g., Pirates) approaches to maintaining arm strength in young pitchers.

Feb 21, 2011 08:39 AM
rating: 2
BP staff member Corey Dawkins
BP staff

Once the injury database is fully integrated we will certainly be creating more feature articles like what you propose. We're working on that almost non-stop trying to get that finalized. I think you will be very impressed.

Feb 21, 2011 12:54 PM

I'm not sure what data exactly you want to see, but I'm pretty sure Tom Verducci based his idea on looking at data, and then Will Carroll also looked at his own data and came to the same conclusion, so the "Verducci Effect", as suggested by the glossary definition one can see when mousing-over the name here, is not just some random hypothesis, but a tested theory.

Feb 21, 2011 14:14 PM
rating: 0
BP staff member Mike Fast
BP staff

Looking at data is not the same thing as doing a well-designed study of a falsifiable hypothesis.

Jeremy Greenhouse took a look at the Verducci Effect here:

David Gassko also looked at it several years ago:

Feb 21, 2011 15:07 PM

Thanks, guys! Injury analysis was the original reason I subscribed to BP years ago and I'm looking forward to reading your stuff.

Feb 21, 2011 16:09 PM
rating: 0
Lloyd Cole

Welcome, Corey! You and Mark are off to a great start. Look forward to your work.

Feb 21, 2011 08:47 AM
rating: 0
Lloyd Cole

Sorry, Marc not Mark. I knew better:)

Feb 21, 2011 08:48 AM
rating: 0

Didn't Lenny Dykstra retire because of spinal stenosis, would it be less of a problem for a pitcher ?

Feb 21, 2011 09:07 AM
rating: 0
BP staff member Corey Dawkins
BP staff

Yes he retire in part because of the spinal stenosis. In terms of pitching versus positional player, hard to tell because there aren't very many comparisons. If the stenosis is in the low back, pain is often produced from arching the back into extension. I would venture that the repeated extension necessary during the pitching motion would be more problematic than for hitters.

Feb 21, 2011 12:38 PM

Purely based on a hunch, but I'd bet Morneau misses at least 50 games to start the season.

Feb 21, 2011 10:26 AM
rating: -1

Nice to see an athletic trainer working for BP. This column is already the best news update on sports injuries I've read since BP started its website and I look forward to future entries.

Feb 21, 2011 13:27 PM
rating: 5

Thanks for saying that respectfully and constructively, and I agree 100%.

Feb 21, 2011 21:26 PM
rating: 0
Matt Kory

Here here!

Feb 21, 2011 23:33 PM
rating: 0
Matt Kory

Welcome, Corey. Great work, I look forward to reading more from you and Marc.

Feb 21, 2011 13:39 PM
rating: 0

Welcome aboard .... I too am looking forward to what you guys will bring to the (operating) table.

Feb 21, 2011 16:59 PM
rating: 0

Not sure how important Harden is to the A's; potential 5th starters include McCarthy, Ross, Cramer, Moscoso--any of those guys could probably give the A's what Harden would. I'm sure the A's are more worried about keeping Brett Anderson healthy . . .

Feb 21, 2011 17:46 PM
rating: 0

What do you know about Grady Sizemore's situation? I know he is eyeing a return on opening day. What is the latest?

Feb 21, 2011 20:37 PM
rating: 0
BP staff member Corey Dawkins
BP staff

Going to address that in detail with tomorrow's piece

Feb 22, 2011 09:26 AM
Michael Bodell

Not sure if it is your bet, but think it might be, but a suggestion for article that I have is describe how the baseball players train and exercise. Both in the off season away from the team, in spring training getting ready for the season, and during the grueling season.

I know if I lift weights I'm often sore after or the next day, and I know rest is an important part of weight training. How do the players manage to be ripped and healthy and also play baseball a dozen consecutive days with no off days?

Feb 21, 2011 23:51 PM
rating: 1

Welcome, and great first article! Adding to the ton of questions about future articles...BP used to produce a spreadsheet going into the season listing every team's starters and ranking their injury risk (simple green/yellow/red). Not not that you have to do everything the same as Will did, but are you planning on coming out with anything of the sort when you role out the team injury reports?

Keep up the good analysis.

Feb 22, 2011 00:15 AM
rating: 0
BP staff member Corey Dawkins
BP staff

That is something I am looking into. Keep checking back.

Feb 22, 2011 09:28 AM

Cool, thanks for the reply.

Feb 23, 2011 12:46 PM
rating: 0
Brian Cartwright

One request - could you let us know which teams the players are on? Chipper Jones isn't a problem, but Eli Whiteside?

Feb 22, 2011 00:26 AM
rating: 0
Marc Normandin

No problem, Brian.

Feb 22, 2011 06:56 AM
rating: 0

Not to push it, but position would be great too. I don't see the problem with Eli Whiteside, as everybody knows he plays quarterback for the Giants, but I have no idea what position Chipper Jones plays.

Feb 23, 2011 12:48 PM
rating: 0

Vincente Padilla headed for MRI with pain in same elbow that sidelined him previously ... argh.

Feb 22, 2011 07:13 AM
rating: 0

Re: Aardsma ... Vargas actually took a full year to come back from the surgery. NY Daily News, 3/6/09:

Expected to be out for three months, Vargas ended up missing the entire season. He wasn't available until October, when he pitched in the Arizona Fall League.

"It's a really big joint and you have to let it heal," Vargas said Friday afternoon in a telephone interview. "We use our hips so much in our sport . . . it's just a difficult thing to come back from really quick without damaging it."

Feb 22, 2011 07:49 AM
rating: 1
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