With Trey Sermon landing with the San Francisco 49ers, many fantasy managers are drooling over the possibility to grab the fourth overall RB selected in the NFL draft. But with a rather weak RB class, I can’t help but wonder, is Sermon’s third-round draft capital more of a concern? Could his injury history be a reason he slipped? I think there are some flags, which I outline below.
Injury History
- 2019 Left LCL tear against Iowa State; missed the rest of the season
- 2020 Left shoulder injury (SC Joint separation) in the national championship game
LCL Injuries
Sermon’s Injury
Below is the video of Sermon’s knee injury. His left knee hyperextends as he’s being tackled. The blue arrows highlight and outline the hyperextension of Sermon’s knee.
It’s unclear if Sermon had surgery, however an interview before 2020 makes it seem like he did. “I’m feeling pretty good right now,” Sermon said. “I’ve made a lot of progress, and I met with the doctor last week and he said I’ll be cleared in a month instead of late May.”
For a grade II LCL injury, a player could return in about eight weeks if surgery was avoided. The fact that he had to meet with a doctor and discuss a return-to-play timeline around six months suggests surgery.
After an injury like this, I wanted to see if there were any alternated biomechanics due to changes in knee stability, especially with cutting. Varus (pushing inside of the knee outward) forces could be an issue in addition to knee hyperextension.
Pre-Injury
Post-Injury
This is something that stood out to me from Sermon’s Instagram post-injury. The blue circle shows toe out and external rotation in the right lower leg. The green circle shows a different pattern on the left. Without seeing him run pre-injury, it’s impossible to say if this matters.
Given his injury, I wonder if he’s avoiding stress to his LCL with an altered gait pattern. This information was more for me and something I will monitor going forward.
Shoulder Injury
Finally, here is Sermon’s right sternoclavicular (SC) joint injury from the National Championship. Another rare injury. Luckily Sermon did not have to have surgery. I don’t see this as an issue moving forward.
Sermon had to go to the hospital, which indicates there was concern the clavicle shifted posterior (backward). This can be a medical emergency due to the possibility of the clavicle pressing into the trachea. Sermon was okay and did not suffer any serious complications.
Summary
The LCL injury was interesting. Although I didn’t see any major complications, it’s something to monitor. If Sermon has knee hyperextension or hamstring injuries moving forward, it might be an issue. An altered gait pattern could cause foot/ankle issues as well.