Ryan Mason has revealed he had "no option" but to retire following the head injury he sustained at Chelsea in January 2017.
Hull City midfielder Mason announced his retirement on Tuesday, having been advised that a return to competitive action would be against his best interests.
The 26-year-old fractured his skull in a clash of heads with Gary Cahill at Stamford Bridge, requiring surgery, and previously claimed that he felt "lucky to be alive" after the incident.
"I can confirm that following specialist medical advice I am having to retire from playing professional football," Mason said in a statement.
"I have worked tirelessly in order to be able to return to the pitch. Unfortunately, having taken expert medical advice I now have no option but to retire due to the risks involved given the nature of my injury.
"I am and always will be eternally grateful for the incredible network of people around me who have helped me to recover from what was a life-threatening injury in January 2017.
"Thank you to my amazing fiance, Rachel, who has been by my side and lived every single day with me since the injury, helping to give me the strength I've needed no matter how tough things got.
"We are so lucky to have now become the proud parents of our perfect baby boy George."
Mason is a product of the Tottenham youth system and won his only England cap against Italy in March 2015 before departing for Hull in the August of the following year.
"I am so proud to have come through the ranks to play for my club, the club I love," he added. "To have had the honour of captaining the team fills me with immense pride.
"Representing my country is an honour that nobody can ever take away from me and something that I am so proud to have achieved.
"I'm retiring from the game with my head held high having done everything in my power over these past 13 months to have given myself every opportunity to return to the pitch.
"I love the game, I always will and I am excited to see where football will take me next."
19. September 2018
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|Hazard left out of Chelsea squad for PAOK trip|
|Tiger feels close to ending drought after achieving Tour Championship goal|
|Leno in line for Arsenal chance in Europa League|
|Gazidis leaves Arsenal in good shape, insists Emery|
|Eagles bring back WR Matthews, place Wallace on IR|
|England include Stokes, Hales and uncapped seamer Stone in ODI squad|
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|Australia captain Paine ready to slog it out with Pakistan|
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|Real Madrid seek to plug Ronaldo scoring gap – Champions League in Opta numbers|
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|Orioles become first pro team to wear braille jerseys|
|Klopp hails ´brilliant´ Henderson|
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|Atletico Tucuman 0 Gremio 2: Libertadores holders draw first blood in QFs|
|Thomas plays down wrist worry|
|Rakitic wants more from Barcelona hat-trick hero Messi|
|My players aren´t s*** – Pochettino defends Spurs squad|
|Cubs reliever Morrow won´t return this season|
|Tebow expected to be back in Mets organisation next season|
|Inter can compete against anyone – Icardi revels in Champions League victory|
|Tuchel: PSG loss to Liverpool not logical or correct|
|Sturridge in best shape I´ve seen – Klopp|
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|Rodrigo and Simeone salute Griezmann display|
|Seahawks DE Clark on Bears QB Trubisky: He´s nothing special|
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|Judge returns to Yankees´ starting lineup|
|Napoli boss Ancelotti takes aim at Red Star time wasting|
|Favre admits young Dortmund stars struggled in Bruges|
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18. September 2018
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|Club Brugge 0 Borussia Dortmund 1: Super sub Pulisic scores late winner|
|Schalke 1 Porto 1: Fahrmann saves one penalty, but Otavio scores another|
|Red Star Belgrade 0 Napoli 0: Points shared as Italians fail to make possession pay|