SANTA CLARA -- Defensive tackle Justin Smith had a bone spur attached to a piece of his triceps tendon that became detached in his left elbow, the 49ers clarified Thursday morning.
[NEWS: Torn triceps for Smith]
Smith has been out of action since early in the second half of the 49ers' game Dec. 16 against the New England Patriots when he sustained an injury while battling through a double-team block. He was not active for the 49ers' 42-13 loss to the Seattle Seahawks on Sunday night. But the team believes there is still a chance he can return to action this season.
The four-time Pro Bowl defensive tackle was absent for the entirety of the Patriots’ 31-point, second-half explosion. On Sunday, the Seahawks scored 35 points on the 49ers’ defense without Smith on the field.
The Sacramento Bee accurately reported Thursday that Smith has a partially torn triceps. The partial tear is to the tendon, not the muscle.
The day after Smith's injury, CSNBayArea.com asked Harbaugh if it was feared Smith sustained a long-term injury similar to Parys Haralson, who is out with a torn triceps, Harbaugh said, "No, it seems to be two different things."
Haralson's injury was a complete tear of the triceps tendon, which required season-ending surgery. Smith is likely to undergo offseason surgery to remove the floating bone spur. The playoff-bound 49ers conclude the regular season Sunday against the Arizona Cardinals at Candlestick Park. Smith would be able to return when he rebuilds the strength in his left arm.
When asked Wednesday about Smith’s status, Harbaugh said, he will “continue to rehab.”
First-year coach Kyle Shanahan is close to completing his 49ers coaching staff.
Shanahan will handle the duties of the offensive coordinator, the position he held with Houston, Washington and Atlanta over the past nine NFL seasons.
Robert Saleh is the 49ers' new defensive coordinator, while Richard Hightower has been hired as the special-teams coordiator.
Here's a look at the 49ers' coaching staffs under Shanahan and last season under Chip Kelly:
2017 49ERS COACHING STAFF
Position: Coach (2016 job)
Head coach: Kyle Shanahan (Falcons, offensive coordinator)
Defensive coordinator: Robert Saleh (Jaguars, linebackers coach)
Special teams coordinator: Richard Hightower (Bears, assistant special teams)
Assistant head coach/tight ends: Jon Embree (Buccaneers, tight ends)
Run game specialist: Mike McDaniel (Falcons, offensive assistant)
Quarterbacks: Rich Scangarello (Wagner, offensive coordinator)
Running backs: Bobby Turner (Falcons, running backs)
Wide receivers: Mike LaFleur (Falcons, offensive assistant)
Offensive line: Vacant
Offensive assistant: T.C. McCartney (LSU, offensive assistant)
Senior defensive assistant: Jason Tarver (49ers, outside linebackers)
Defensive line: Jeff Zgonina (N.Y. Giants, assistant defensive line)
Linebackers: Johnny Holland (Browns, inside linebackers)
Defensive backs: Jeff Hafley (49ers, defensive backs)
Offensive quality control: Taylor Embree (Chiefs, defensive assistant)
Defensive quality control: Bobby Slowik
Head strength and conditioning: Ray Wright
* * *
2016 49ERS COACHING STAFF
Position: Coach (current status)
Head coach: Chip Kelly
Offensive coordinator: Curtis Modkins (Bears, running backs)
Defensive coordinator: Jim O’Neil
Special teams coordinator: Derius Swinton
Quarterbacks: Ryan Day (Ohio State, quarterbacks)
Running backs: Tom Rathman
Wide receivers: Bob Bicknell
Tight ends: Jeff Nixon (Baylor, co-offensive coordinator/running backs)
Offensive line: Pat Flaherty (Jaguars, offensive line)
Assistant offensive line: Eric Wolford (South Carolina, offensive line)
Defensive line: Jerry Azzinaro (Cal, defensive line)
Assistant defensive line: Vince Oghobaase
Outside linebackers: Jason Tarver (49ers, senior defensive assistant)
Inside linebacker: Joe Bowden
Defensive backs: Jeff Hafley (49ers, defensive backs)
Assistant defensive backs: Roy Anderson (Bears, assistant secondary)
Assistant special teams: Michael Clay
Offensive quality control: Mick Lombardi (Jets, offensive assistant/assistant QBs coach)
Defensive quality control: Tem Lukabu
Senior analyst: Dana Bible
Director of human performance: Mark Uyeyama
John Benton, who coached on the same staff during Kyle Shanahan’s four seasons with the Houston Texans, has reportedly received permission from the Denver Broncos to interview with the 49ers.
The Broncos hired Benton on Jan. 15 to work as the team’s assistant offensive line coach under line coach Jeff Davidson.
But Denver coach Vance Joseph and general manager John Elway provided Benton permission to interview with the 49ers, Denver’s 9News reported. The Sacramento Bee was first to report the 49ers were looking at Benton.
The offensive line coach is the last major position that remains vacant on Shanahan’s staff.
Benton worked last season as Jacksonville’s assistant offensive line coach. He worked the previous 13 seasons as offensive line coach with the St. Louis Rams (2003-05), Houston (2006-2013) and Miami (2014-15).
Shanahan’s first NFL coaching job was with Houston in 2006, when he coached wide receivers. Shanahan became the quarterbacks coach with the Texans in 2007 before spending the next two seasons as offensive coordinator under then-coach Gary Kubiak.
The 49ers announced nine additions to the coaching staff on Friday.
Also, the 49ers are expected to hire Daniel Bullocks as assistant defensive backs coach, according to The Sporting News. Bullocks worked in the same role with the Jacksonville Jaguars last season. The Jaguars' linebackers coach last season, Robert Saleh, is the 49ers' new defensive coodinator. Bullocks appeared in 31 games in three NFL seasons with the Detroit Lions in 2006 and '08.