Surgery effectively ends Dinwiddie’s season

Nets guard Spencer Dinwiddie had reconstruction surgery on his partially torn anterior cruciate ligament Monday morning. The team announced the surgery, which was performed by Dr. Riley Williams III at the Hospital for Special Surgery.

The Nets didn’t offer a timetable for recovery, but experts who spoke with The Post said the nature of the surgery would make it season-ending. Dinwiddie’s ACL was only partially torn, but getting a reconstruction instead of a repair all but eliminated any hopes of a return for 2020-21.

“Not if an ACL reconstruction is being done,” Manhattan Orthopedic Care founder Dr. Armin Tehrany told The Post. “There are situations where a partial ACL tear could be kept intact and sometimes if it was say a repair if the ACL is reparable as opposed to a reconstruction. The risk there is there is up to a 20 percent failure rate with a repair as opposed to reconstruction.

“[A reconstruction] is the right thing. To me, that’s usually what is going to get done in 2020. Repairing an ACL is now an option [but] very unlikely.

“If anything, the way to describe expectations for high-level athletes for reconstruction — it’d be better for him to wait nine or 12 months to get back to a high-functional level than six-to-nine [months]. It’s almost 100 percent that it’s a season-ending injury.”

The Nets announced that Dinwiddie will begin rehabilitation next week and is expected to make a full recovery. The guard posted a picture Sunday on Instagram of himself already working out, presumably at HSS Training Center.

Dinwiddie had started the first three games of the season in the backcourt alongside Kyrie Irving. He averaged 6.7 points, 4.3 rebounds and three assists in 21.4 minutes. His injury forced Timothe LuwawuCabarrot into the unfamiliar role as a starter and has robbed the Nets of their most versatile player.