I can’t quantify the veracity of this tweet or the credentials of the person tweeting it but seemed interesting and maybe a likely explanation of Nic’s issue and the proposed surgical resolution.
Interesting! Thank you for posting!
From what I can see in the literature, the gold standard for treatment of this would be a conservative approach, with surgery considered for patients that don't respond to this (seems like 3-6 months of conservative therapy before surgery is considered). Couldn't find exact rehab time, but probably season ending anyway ('long and structured rehab'). They would have been weighing up the options and recovery time for either playing this year with a response to non-surgical intervention, or ending the season with surgery to have a possibility of being ok in time for the start of next season should his response to surgery be positive.
Systematic review of surgical intervention- Surgical treatment for achilles tendinopathy – a systematic review - BMC Musculoskeletal Disorders
Systematic review of conservative intervention- Conservative Treatment of Chronic Achilles Tendinopathy: A Systematic Review
Functional outcomes after surgery (which sounds like what is described in the tweet with debridement of necrotic tissue)- Functional outcomes and return to sports after surgical treatment of insertional Achilles tendinopathy: Surgical approach tailored to the degree of tendon involvement
*Caveats perhaps not applicable to NN- average age of 44 (+/- 11 years), not athletes (almost half did sport >2x/week), average time between symptoms and surgery 33 months, minimum follow-up time of 12 months.