Remarkable!
“I can highly recommend this product to anyone recovering from an Achilles tendon rupture.”
Justin Relf
Reviewed in the United States on 16 September 2025
Common Recovery Challenge
Can't Sleep with a Torn Achilles?
Sleep problems are the #1 complaint during Achilles recovery - you're not alone
80%
of patients struggle with sleep during boot phase
Sound familiar?
- • The boot is heavy, hot, and uncomfortable
- • You can't find a comfortable sleeping position
- • You're exhausted but can't get quality rest
5,000+
patients helped
0
re-ruptures reported
Why We Built This
We Made the Splint to Solve This Exact Problem
After hearing from thousands of patients struggling to sleep in their heavy boots, we designed a lightweight alternative that maintains protection while dramatically improving comfort.
The Thetis Night Splint was developed alongside orthopaedic surgeons specifically for Achilles rupture recovery. It's not a generic product adapted for this use - it's purpose-built for exactly what you're going through.
Always check with your medical team before using. Usually approved after week 2-3.
View product detailsReal patient reviews
Patients say it helped them sleep
Taken from verified reviews where patients describe swapping the boot for the Thetis splint at night.
Necessary for good sleep
“Lightweight, breathable, and easy to put on and take off. Love how compact it is compared to the boot.”
John Selwanes
Reviewed in the United States on 16 September 2025
Works well for sleeping
“Works well for sleeping and is definitely better than sleeping in the boot.”
Anonymous Customer
Reviewed in the United Kingdom on 4 September 2025
122+ reviews mention better sleep vs the boot. Read all reviews
Finally Sleep Comfortably During Recovery
The lightweight alternative to sleeping in your heavy boot
Sleep Better Tonight
Experience the difference in your sleep quality. "The boot was making sleep impossible! It felt like a torture chamber at night."
Light & Breathable
Unlike the heavy boot, our splint keeps you cool and comfortable. "So much easier than the big boot. Finally lets your leg breathe!"
Safe Achilles Healing
Maintains a safe position for recovery. "Works perfect to keep my foot in a safe position. Sleep is critical to recovery."
3000 patients, no complicationsSurgeon-Approved Design
Trusted by medical professionals. "My surgeon, who also has an MA in engineering, gave his approval after reviewing the design."
Read more clinician reviewsSleep & Recovery
Why Sleep Matters for Achilles Healing
Quality sleep is critical for tissue repair and recovery
"Sleeping in a walking boot is one of the hardest parts of recovery. Around 80% of patients struggle with sleep during this phase. The boot is heavy, rigid, hot, and feels like sleeping with a brick strapped to your leg."
Common
sleep difficulties are frequently reported during boot phase
Heavy
walking boots are bulky and uncomfortable for sleeping
24/7
protection needed - even while sleeping
Tissue Repair
During deep sleep, your body releases growth hormone which supports tissue healing and recovery.
Pain Management
Quality sleep helps your body manage pain more effectively and supports overall healing.
Mental Health
Poor sleep can increase pain perception and affect mood. Good sleep helps you cope better with recovery.
Energy & Recovery
Rest is essential for healing. Quality sleep helps your body dedicate resources to recovery.
Critical Safety Warning
Removing your boot while sleeping is NOT safe and can cause serious damage. During the boot phase, you need protection 24/7 to keep the tendon ends together. Sleeping without protection is one of the most common causes of re-rupture or tendon elongation.
Sleep Tips for Boot Phase
- Sleep on your back with leg elevated on pillows
- Support your calf, not just your foot
- Keep the room cool - boots trap heat
- Use light bedding to prevent overheating
- Keep crutches by the bed with a nightlight
- Empty your bladder before bed to minimize trips
Trusted by Medical Professionals
Surgeons and clinicians recommend the Thetis splint for safe sleeping
Mr Andy RocheVerified surgeon testimonial
Surgeon
Foot and Ankle Surgeon
Comfort and usability all round.
"Makes complete sense to use something like this and I highly recommend this product. Comfort and usability all round."
Mr Sohail YousafVerified surgeon testimonial
Surgeon
Foot and Ankle Surgeon
Excellent tool for enhancing recovery and comfort
"Lightweight and effective, it provides relief during sleep and protects the foot outside the boot."
Dr Robbie RayVerified surgeon testimonial
Surgeon
Foot and Ankle Surgeon
Setting a new standard in Achilles tendon rehabilitation
"A game-changer in my practice. The splint's design prioritizes both comfort and functionality, enabling controlled, progressive recovery."
Professor Matthew WelckVerified surgeon testimonial
Surgeon
Foot and Ankle Surgeon
An excellent piece of equipment
"Patients sometimes find sleeping in a boot uncomfortable, and having an alternative, more lightweight option is well received."
Mr James DavisVerified surgeon testimonial
Surgeon
Past President of the British Orthopaedic Foot and Ankle Society
A fantastic alternative to uncomfortable hospital boots for night wear
"When I tore my own Achilles tendon, the hardest part was wearing the hospital boot in bed. This splint is certain to improve the recovery experience for patients."
Mr Ian GillVerified surgeon testimonial
Surgeon
Foot and Ankle Surgeon
Get a good night's sleep!
"Worth every penny as it stops the misery of trying to get good nights sleep in an uncomfortable boot!"
Mr Andy RocheVerified surgeon testimonial
Surgeon
Foot and Ankle Surgeon
Comfort and usability all round.
"Makes complete sense to use something like this and I highly recommend this product. Comfort and usability all round."
Mr Sohail YousafVerified surgeon testimonial
Surgeon
Foot and Ankle Surgeon
Excellent tool for enhancing recovery and comfort
"Lightweight and effective, it provides relief during sleep and protects the foot outside the boot."
Dr Robbie RayVerified surgeon testimonial
Surgeon
Foot and Ankle Surgeon
Setting a new standard in Achilles tendon rehabilitation
"A game-changer in my practice. The splint's design prioritizes both comfort and functionality, enabling controlled, progressive recovery."
Professor Matthew WelckVerified surgeon testimonial
Surgeon
Foot and Ankle Surgeon
An excellent piece of equipment
"Patients sometimes find sleeping in a boot uncomfortable, and having an alternative, more lightweight option is well received."
Mr James DavisVerified surgeon testimonial
Surgeon
Past President of the British Orthopaedic Foot and Ankle Society
A fantastic alternative to uncomfortable hospital boots for night wear
"When I tore my own Achilles tendon, the hardest part was wearing the hospital boot in bed. This splint is certain to improve the recovery experience for patients."
Mr Ian GillVerified surgeon testimonial
Surgeon
Foot and Ankle Surgeon
Get a good night's sleep!
"Worth every penny as it stops the misery of trying to get good nights sleep in an uncomfortable boot!"
Trusted by Professional Athletes
Athletes recovering from Achilles rupture trust the Thetis splint
AthleteRecovery felt more normal while keeping the tendon safe
After my Achilles rupture, I used the Thetis splint when I was home instead of wearing the heavy boot all the time. It made recovery easier, feeling a little more normal, while keeping the tendon safe. Also later I used it while swimming as it's light and easy in the water.Holger RuneVerified testimonialProfessional Tennis Player2025-08-01
AthleteGame changer!
The Thetis splint was really helpful for staying safe when doing my rehab exercises. I've also been sleeping in it since I came out the cast which has been an absolute game changer.Ollie LawrenceVerified testimonialEnglish Rugby Union Player2025-04-15
AthleteSimple design that allows better sleep and wound breathing
The Thetis Splint has a simple design that is perfectly fit for purpose. It has allowed me to get the sleep that is so vital as I recovered from achilles tendon rupture and surgery whilst also feeling secure and protected. Apart from being less bulky than the orthopaedic boot, it also gives the surg...Kim DaybellVerified testimonialTeam GB Table Tennis and Doctor2025-01-15
AthleteThe Thetis splint was an absolute saviour
After my Achilles tendon rupture surgery, I was advised by a specialist to invest in a Thetis splint as the best product to use as part of my recovery. The difference between sleeping in a big bulky boot and the Thetis splint was an absolute saviour. It made sleeping at night so much better and eas...Steff EvansVerified testimonialWelsh Rugby Union Player2024-12-01
AthleteSlimmer, lightweight, and allows free movement while protecting the tendon
The Thetis Splint is a lot slimmer and far more lightweight than the orthopaedic boot I was sleeping in. It allows me to move my leg more freely but still stops me from flexing my toes beyond a certain point, which is ideal whilst the tendon heals. The splint even comes in my favourite colour, so I ...Olivia BlatchVerified testimonialTeam GB Weightlifter2023-06-01
AthleteRevolutionary splint - comfortable sleep with no fear of injury
I recently began using the Thetis Splint overnight. My regular boot is good for daily use but very heavy and uncomfortable to sleep in - the splint has been revolutionary for me! It keeps my foot perfectly in place but without being bulky, meaning I can sleep more comfortably with no fear of hurting...Andrew LawrenceVerified testimonialTeam GB Basketball2022-02-01
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Sleep Better Tonight
You deserve a good night's sleep during recovery. Remove that heavy boot and finally get the rest you need to heal properly.