Otten, 26, who has been with the Ospreys for a decade, suffered a career-ending neck injury against the Dragons in January.
A product of the Ospreys development pathway, Otten featured regularly for Swansea RFC in the Welsh Premiership, playing 26 times for the All Whites between 2012 and 2014.
Otten is a Wales Under-20 international and before featuring for the Ospreys, he played for Aberavon, Neath, Swansea and Waunarlwydd RFC.
“As a young kid it was always my dream to represent the Ospreys,” said Otten.
“I used to have a season ticket with my old man when I was playing for Waunarlwydd and through college, so it’s meant a lot to me.
“It’s been a dream come true and it’s just gut-wrenching and cruel to have it cut short.
“To say I’ve represented the jersey not just once but 110 times is something I will always be proud of and be able to show my kids one day. It’s not only made me a better player but a better person too.
“I’ve always had unbelievable support here both as a player and a person which was always important for me.
“The supporters make a rugby team and I just want to say a big thank you to them for everything over the years.
“For me, retirement from rugby has come way too early. There’s a lot of hard work to come.
“My coffee business SO Coffee is growing nicely at the moment and our coffee shop Humble down in Llanelli is re-opening soon so we’re excited about them.
“I’ve just finished my level two coaching course and looking ahead to my level three then seeing what opportunities are out there for me to become a coach.
“There is a lot to think about as a family and seeing what’s best for us.”
Otten made his Ospreys debut in March 2014 at the age of 19 as a replacement in a 34-9 win over Cardiff Blues at the Liberty Stadium.
His 50th appearance came in September 2017 away to the Cheetahs.
The hooker made his 100th appearance for the region against Cardiff Blues at the Liberty Stadium back in December 2019.
Known for his signature chip and chase, Otten became a crowd favourite with Osprey supporters. During his time in an Ospreys jersey, he has crossed the whitewash 10 times and finishes on 110 appearances.
Last season, he was named in the Conference A Guinness PRO14 team of the season and was the only Welsh player named in a star-studded XV after an impressive personal campaign.
Toby Booth, Ospreys head coach, said: “It’s hugely sad when a player’s career is curtailed by injury, but if there is a silver lining, it is that Scott has planned an alternative career which will no doubt see him flourish.
He is currently still with us and he is still contributing to our environment which is great and reflects what the Ospreys mean to him.”
