NFL Injury Analysis: RB Trouble for the 49ers
NFL Injury Analysis: RB Trouble for the 49ers

This article is part of our Injury Analysis series.

Jerick McKinnon and Matt Breida

The 49ers starting running back Jerick McKinnon made an early exit from practice on Sunday with what appeared to be a knee injury. McKinnon was seen grabbing the back of his right knee and would later undergo a MRI on the area. The medical imaging revealed a low-grade calf strain that will keep him sidelined for at least a week.

The results of the MRI may surprise people that don't normally associate the calf muscle complex with the knee. However, the calf is a two-joint muscle, meaning it's active in two different areas. Most people know the calf attaches to the heel via the Achilles' tendon, but they tend to overlook that it originates above the knee joint.

You've reached the end of our free article preview.

Want to Read More?
Subscribe to RotoWire to see the full article.

We reserve some of our best content for our paid subscribers. Plus, if you choose to subscribe you can discuss this article with the author and the rest of the RotoWire community.

Get Instant Access To This Article Get Access To This Article
Slack Community
Join Our Subscriber-Only NFL Chat on Slack
Chat with our writers and other RotoWire NFL fans on Slack for all the pre-game info and in-game banter. Send an email to support@rotowire.com for exclusive access.
ABOUT THE AUTHOR
Jeff Stotts
Jeff Stotts works as a Certified Athletic Trainer (MAT, ATC, PES, CES). He won the 2011 Best Fantasy Football Article in Print from the Fantasy Sports Trade Association.
DFS Tournament Guide: Week 3
DFS Tournament Guide: Week 3
DraftKings NFL: Week 3 Picks
DraftKings NFL: Week 3 Picks
FanDuel Fantasy Football: Week 3 Value Picks
FanDuel Fantasy Football: Week 3 Value Picks
SXM Highlights: Are Matthew Stafford's Lions Set To Conquer Patriots' D?
SXM Highlights: Are Matthew Stafford's Lions Set To Conquer Patriots' D?