Show HN: A deterministic rehab engine for BJJ injuries

BJJRehab launched a tool it calls a "deterministic rehab engine" for Brazilian jiu-jitsu injuries, according to a Show HN post submitted by user osamet67 on August 19, 2026. The project is live at bjjrehab.com.

The product appears to offer structured, protocol-driven rehabilitation pathways specific to BJJ-related injuries, positioning itself as a systematic alternative to generic physical therapy guides. The "deterministic" framing suggests the engine maps injury types to fixed recovery sequences rather than adaptive or AI-generated plans, though the HN listing provides no further technical detail on the underlying methodology.

No funding, team size, founding date, or pricing information was disclosed in the source material. The post received one point and no comments at the time of indexing, per Hacker News.

BJJ is a contact sport with a high incidence of joint and soft-tissue injuries — shoulders, knees, and the spine are commonly cited problem areas among practitioners. Sport-specific rehab tools have grown as a niche within the broader sports medicine and digital health space, though no direct competitors are named in the available source material.

What happens next is unclear from the submission. No roadmap, expansion plans, or commercial details were shared in the Show HN post.