Calf Implants in London
Calf implants are solid silicone devices placed within the calf muscles to increase their size, definition and shape. The implants are positioned above the gastrocnemius — the primary muscle responsible for the curved profile of the lower leg — through small incisions in the crease behind the knee. The result is a fuller, more defined lower leg that is proportionate to the rest of the body. Men considering wider changes to their lower body can also read about liposuction for men.
The procedure is performed for two distinct reasons: cosmetic enhancement in patients who find their calves naturally small or out of proportion despite regular exercise; and functional restoration in patients with calf muscle atrophy following injury, illness, or congenital conditions such as spina bifida or club foot.
For patients seeking mild to moderate volume increase or improved symmetry without implants, fat transfer calf augmentation is available as an alternative technique using your own fat. The two approaches are compared in detail below.
All calf implant procedures at Centre for Surgery are performed by Mr Metin Nizamoglu FRCS (Plast), consultant plastic surgeon on the GMC Specialist Register, under TIVA as a day case at our CQC-regulated Baker Street facility.
Calf Implants at a Glance
These are typical timeframes for bilateral calf implants. Mr Nizamoglu will give you specific guidance at each review, and patients with calf atrophy may be advised physiotherapy alongside recovery.
Considering calf implants?Speak to Mr Nizamoglu about whether implants, fat transfer or a custom implant suits your legs. No obligation, and no pressure to book.
Mr Metin Nizamoglu FRCS (Plast) — Calf Augmentation Specialist

Mr Metin Nizamoglu is a plastic surgeon on the GMC Specialist Register, holding the Fellowship of the Royal Colleges of Surgeons in Plastic Surgery (FRCS Plast). He subspecialises in body contouring and is the only surgeon at Centre for Surgery who performs calf augmentation procedures.
Mr Nizamoglu performs both implant-based calf augmentation and fat transfer calf augmentation, allowing him to advise on the most appropriate technique for each patient’s anatomy and goals. For patients with calf atrophy from congenital conditions, injury or neurological disease, he works with Anatomik Modelling to produce 3D custom-designed silicone implants made from high-resolution CT scan data — a service available at very few centres in the UK.
At consultation, Mr Nizamoglu assesses each patient’s lower leg anatomy, skin quality, the gastrocnemius muscle volume and symmetry, and the appropriate implant size and placement configuration to achieve a proportionate, natural-looking result.
What Are Calf Implants?
Calf implants are solid silicone devices — not gel-filled like breast implants — made from a firm but flexible silicone elastomer. The solid construction means there is no risk of rupture or leakage. The material is biocompatible, durable and designed to mimic the resistance and feel of natural gastrocnemius muscle tissue.
The implants are placed in a subfascial pocket above the gastrocnemius muscle through a 5–7 cm incision in the popliteal crease (the natural skin fold behind the knee). This location keeps the scar inconspicuous and heals well. One or two implants can be placed per leg — a single implant augments the medial head of the gastrocnemius, producing the characteristic curved medial calf prominence; a second implant placed over the lateral head adds width and outer definition.
Calf implants differ from fat transfer calf augmentation in several important ways: implants provide a predictable, defined increase in volume and shape that does not diminish over time; fat transfer offers a softer, more subtle result but a proportion of the injected fat is reabsorbed by the body in the months following the procedure. For patients seeking a significant, permanent increase in calf definition and size, implants are the more reliable option.
Anatomy of the Calf Muscles
Understanding the anatomy of the calf helps explain both the goals of calf augmentation and why the results are achievable through implant placement.
The calf comprises two principal muscles. The gastrocnemius is the larger, more superficial of the two and is entirely responsible for the visible contour of the lower leg. It has two heads — a medial (inner) head and a lateral (outer) head — originating from the posterior femoral condyles and inserting via the Achilles tendon into the calcaneus. The medial head produces the characteristic curved prominence of the inner calf that is visible from the front, side and rear. The lateral head creates outer width and the fuller appearance when viewed from behind. The gastrocnemius produces plantar flexion — pointing the foot downward — and is most active during activities requiring explosive movement such as jumping and sprinting.
The soleus is a broader, flatter muscle that lies beneath the gastrocnemius. It also inserts into the Achilles tendon and contributes to plantar flexion, particularly during sustained standing and slow walking. The soleus is not the target of implant placement — it contributes to overall lower leg bulk but does not define the surface contour visible beneath the skin.
Calf implants are placed in the subfascial plane — above the gastrocnemius muscle but beneath the investing fascia of the lower leg. This pocket is well-defined anatomically and provides secure, stable implant positioning.
Calf Implant Before & After Photos
All photographs are taken with full written patient consent. They represent cases performed at Centre for Surgery by Mr Metin Nizamoglu. A wider range is available to view at consultation. Individual results vary.
These photos include nudity
Clinical photos of real patients, shared with their consent.
Am I Suitable for Calf Implant Surgery?
Suitability for calf implant surgery is assessed at consultation with Mr Nizamoglu. The procedure is appropriate for two broad patient groups:
Cosmetic candidates
- Naturally small or underdeveloped calves that remain out of proportion with the thighs and ankles despite regular leg training
- Good general health — no significant medical conditions that impair healing or increase surgical risk
- Sufficient soft tissue coverage of the calf — very thin lower legs with minimal subcutaneous tissue may produce a visible implant edge
- Realistic expectations — implants add defined volume; they do not alter bone structure or ankle proportion
- Age 18 or over
- Non-smoker, or willing to stop smoking at least four weeks before and after surgery
- Stable weight
Reconstructive / atrophy candidates
- Calf muscle atrophy following neurological conditions — poliomyelitis, spina bifida, Charcot-Marie-Tooth disease, spinal cord injury
- Calf volume loss following trauma, compartment syndrome, or previous surgery
- Congenital calf hypoplasia or asymmetry
- Club foot deformity with associated calf atrophy
For reconstructive cases with significant volume deficit or asymmetry, Mr Nizamoglu can produce a 3D custom-designed implant from CT scan data through Anatomik Modelling — providing a precise fit to the patient’s anatomy that is not achievable with standard off-the-shelf implants.
Where a patient has adequate donor fat but insufficient muscle bulk for implants, fat transfer calf augmentation may be a more suitable option. This will be discussed at consultation.
Calf Implant Options — Materials, Sizes and Placement
Material
All calf implants used at Centre for Surgery are solid silicone elastomer devices. The material is firm but compressible, mimicking the resistance of the gastrocnemius muscle on palpation. As a solid device, there is no risk of rupture or silicone gel leakage — the implant retains its shape permanently. The silicone is biocompatible and has a well-established long-term safety profile in soft tissue augmentation.
Sizes
Calf implants are available in a range of sizes to accommodate different lower leg dimensions and desired outcomes. The appropriate size is determined at consultation based on the length and circumference of the calf, the existing muscle volume, the thickness of the overlying soft tissue, and the patient’s aesthetic goals. Oversizing carries a risk of implant edge visibility and skin thinning and is avoided.
Standard implant placement options
- Single implant in one leg — for unilateral atrophy or asymmetry correction
- Single implant in both legs — the most common configuration for bilateral cosmetic augmentation, adding medial calf definition
- Two implants in one leg — medial and lateral head augmentation for more comprehensive unilateral correction
- Two implants in both legs — bilateral dual augmentation for maximum definition and width
3D custom-designed implants
For patients with significant calf atrophy or complex asymmetry, standard implant sizes may not adequately replicate the lost volume or match the contralateral leg. In these cases, Mr Nizamoglu can commission a 3D custom-designed implant from Anatomik Modelling — computer-designed from a high-resolution CT scan to match the patient’s precise anatomy. Custom implants are considered the gold standard for muscle deficiency and atrophy cases. See below for full details.
3D Custom-Designed Calf Implants for Calf Atrophy
Centre for Surgery is one of the few centres in the UK to offer 3D custom-designed calf implants for patients with calf atrophy resulting from congenital conditions, neurological disease or trauma. This service is provided through a partnership with Anatomik Modelling, a specialist manufacturer of computer-designed silicone implants.
How the process works
Step 1 — Imaging and measurements
Mr Nizamoglu arranges a high-resolution CT scan of both lower legs. The scan data is used to create a precise three-dimensional model of the patient’s anatomy, capturing the exact shape of the residual muscle, the overlying soft tissue depth, and the asymmetry relative to the unaffected leg.

Step 2 — Implant design and fabrication
The CT scan data is sent to Anatomik Modelling, where the implant is computer-designed to fill the precise volume deficit and replicate the contour of the unaffected leg. The implant is fabricated in biocompatible solid silicone. Design and fabrication typically takes several weeks — Mr Nizamoglu will advise on the current lead time at consultation.
Step 3 — Surgical placement
The custom implant is inserted using the same subfascial technique as standard implants — through a popliteal crease incision behind the knee. The custom shape ensures the implant fills the available pocket precisely, minimising the risk of migration or rotation that can occur when a standard implant is used in an atrophied leg with irregular muscle geometry.

3D custom calf implant results


3D custom-designed calf implant for unilateral calf atrophy. Posterior and lateral views showing volume restoration and improved lower leg symmetry.
The Calf Implant Procedure
Calf implant surgery is performed by Mr Metin Nizamoglu as a day case under TIVA (Total Intravenous Anaesthesia) at our CQC-regulated Baker Street facility. The procedure takes approximately two to three hours for bilateral augmentation.
Preoperative marking
With the patient standing, Mr Nizamoglu marks the popliteal crease incision positions and the boundaries of the subfascial pocket on each leg, confirming the implant placement plan.
Anaesthesia
TIVA is administered by a consultant anaesthetist. The patient is fully asleep throughout — no pain is experienced during the procedure.
Incision
A 5–7 cm incision is made in the popliteal crease behind the knee. This location is well-concealed within the natural skin fold and heals to a fine, inconspicuous scar.
Pocket creation
The surgeon creates a subfascial pocket above the gastrocnemius muscle. The pocket dimensions correspond precisely to the implant size selected — correct pocket sizing is critical to preventing implant migration or rotation postoperatively.
Implant insertion
The solid silicone implant is inserted into the pocket. Where dual implants are being placed, a second pocket is created over the lateral head of the gastrocnemius through the same incision. Implant position and symmetry are confirmed with the patient in multiple positions.
Closure
Incisions are closed with dissolvable sutures in layers. Support stockings are applied followed by a compression garment before the patient wakes from TIVA.
Discharge
The nursing team monitors you for one to three hours after waking. A responsible adult must take you home — driving is not permitted on the day of surgery.
Recovery After Calf Implant Surgery
Recovery from calf implant surgery requires more care than recovery after liposuction and most other body contouring procedures because the lower legs bear the body’s full weight during standing and walking. Following the postoperative protocol carefully directly reduces the risk of implant migration, wound complications and delayed healing.
Compression
Support stockings are applied at the end of surgery and worn continuously day and night for the first three weeks. These control swelling and limit implant movement in the early postoperative period while the pocket capsule begins to form. After three weeks they can be worn at night only for a further three weeks.
Mobility
Light walking is permitted from day one. Avoid prolonged standing and walking for the first two weeks. Calf-loading activities — running, jumping, stair climbing at pace — should be avoided for six weeks.
Pain
Managed with paracetamol as required. Most patients describe a feeling of tightness and pressure in the lower legs rather than sharp pain. Discomfort is typically well-controlled by the end of the first week.
Return to work
Desk-based work: one to two weeks. Roles requiring prolonged standing or walking require longer — typically three to four weeks minimum.
Return to exercise
Light activity at two weeks. Full exercise including calf-loading gym training at six weeks, subject to your surgeon’s review.
Physiotherapy
Physiotherapy may be recommended to restore range of motion and calf function, particularly in patients who had significant preoperative atrophy.
Results
Initial shape visible once swelling reduces — typically from six weeks. Final result at three to six months. The solid silicone implants are permanent and do not degrade over time.
Follow-up
Wound check at seven to ten days. Surgeon review at six weeks. Further reviews at three and six months are available. Your surgeon’s direct number for the first 24 hours after surgery.
How Much Do Calf Implants Cost in London?
Calf implants at Baker Street
From£6,500
One package price, agreed with your surgeon before anything is booked. No obligation, and at least two weeks to decide.
£100 consultation, redeemed against your surgery
What your price includes
- GMC-registered consultant plastic surgeon
- Consultant anaesthetist and TIVA
- Theatre time at our CQC-regulated Baker Street clinic
- Pre-operative assessment with a nurse
- A named patient coordinator throughout
- Follow-up reviews with your surgeon
Performed under TIVA by a consultant anaesthetist
The cost of calf implant surgery at Centre for Surgery depends on whether one or two implants are placed per leg, whether custom Anatomik Modelling implants are required, and the overall complexity of the procedure. Pricing is confirmed following a face-to-face consultation with Mr Nizamoglu.
What affects the price
- Number of implants: a single implant per leg for bilateral cosmetic augmentation costs less than dual implants per leg addressing both the medial and lateral heads
- Unilateral or bilateral: treating one leg only is priced separately at consultation
- Standard or custom implants: 3D custom-designed Anatomik Modelling implants carry an additional cost covering CT imaging, computer design and fabrication in addition to the surgical fee
- Complexity: reconstructive and atrophy cases with irregular muscle geometry require more operative planning than straightforward cosmetic augmentation
See our full calf implants cost guide for prices by option, or call 020 7993 4849 to discuss your case with a patient coordinator.
The £100 consultation fee is redeemable against the cost of your procedure if you proceed.
Finance
You can pay in full or spread the cost with finance through Chrysalis Finance, subject to status. Plans and a representative example are on our finance options page, and a patient coordinator can talk you through them on 020 7993 4849.
What is included in your treatment package
- As many preoperative consultations with Mr Nizamoglu as required
- In-depth preoperative medical assessment
- Dedicated patient coordinator throughout
- Treatment at a CQC-regulated day surgery facility at Baker Street
- TIVA administered by a consultant anaesthetist
- Solid silicone calf implants (standard range)
- Dissolvable sutures
- Same-day discharge
- Your surgeon’s direct number for the first 24 hours
- Wound check at seven to ten days
- Surgeon review at six weeks
- Further reviews at three and six months available
- Two-week cooling-off period from the date of consent
Compression garments and prescribed medications are purchased separately and confirmed with you in advance. 3D custom Anatomik Modelling implants carry an additional cost — detailed at consultation.
Why Choose Centre for Surgery for Calf Implants?
Centre for Surgery is a CQC-regulated cosmetic surgery clinic at 95–97 Baker Street, London W1U 6RN. All calf implant procedures are performed by a GMC-registered plastic surgeon with subspecialist experience in calf augmentation.
Clinical standards
- All procedures by a GMC-registered plastic surgeon
- One of very few UK centres offering 3D custom Anatomik Modelling implants for calf atrophy
- Both implant and fat transfer techniques are available — your surgeon advises on the most appropriate for your anatomy
- TIVA administered by a consultant anaesthetist throughout
- Day case — admitted and discharged the same day
- Your surgeon’s direct number for the first 24 hours
- Wound check and six-week surgeon review included; further reviews at three and six months available
- CQC-regulated Baker Street surgical facility
Cost
Calf implant pricing depends on whether standard or 3D custom implants are used, and whether one or two implants are placed per leg. See our full calf implants cost guide for prices.
Book a consultation
Phone: 020 7993 4849
Address: 95–97 Baker Street, London W1U 6RN
Consultation fee: £100, redeemable against your procedure cost. Finance available through Chrysalis Finance subject to status.
Further reading
- Calf augmentation with fat transfer — an alternative to implants
- Calf augmentation with fat — ultimate guide
- Calf and ankle liposuction
- Male body contouring at Centre for Surgery
- Royal College of Surgeons — Professional Standards for Cosmetic Surgery
- British Association of Aesthetic Plastic Surgeons (BAAPS)
- British Association of Plastic, Reconstructive and Aesthetic Surgeons (BAPRAS)

What To Expect
Your Consultation
A 45–60 minute consultation at Baker Street, always with Mr Metin Nizamoglu personally.
What is assessed:
- Calf muscle volume and symmetry in both legs
- Soft tissue thickness — this decides the implant size, since oversizing risks a visible edge
- Whether one or two implants per leg will give the shape you want
- For atrophy, whether a standard implant is enough or a 3D custom implant is needed
Where fat transfer could suit you better, both options are compared. We recommend a two-week cooling-off period, and the £100 consultation fee is redeemable against the procedure.
Before Your Procedure
Our preoperative team completes your medical assessment and sends written instructions.
- Stop smoking four weeks before and after — it slows healing of the incisions behind the knee
- Stop aspirin, anti-inflammatories and herbal supplements two weeks before
- Buy your support stockings in advance — they are not included in the price
- Nothing to eat for six hours beforehand, as you will be having TIVA
- Set up somewhere at home to rest with your legs raised
For custom implants, the CT scan and fabrication are completed before your surgery date is set.
The Day of Your Procedure
A nurse admits you and your consultant anaesthetist confirms you are fit for TIVA. Mr Nizamoglu confirms the plan and marks each leg with you standing.
- Two to three hours for both legs, fully asleep throughout
- Implants are placed through the crease behind the knee, and symmetry is checked before closing
- Dissolvable sutures, with stockings and a compression garment on before you wake
- Monitored for one to three hours, then home the same day — no driving
After Your Procedure
You have your surgeon’s direct number for the first 24 hours, and our nursing team stays in contact over the first two weeks. Tightness and pressure in the calves is normal early on and is managed with paracetamol.
- Stockings day and night for three weeks, then nights only for three more
- Light walking from day one, but avoid long periods on your feet for two weeks
- No running, jumping or calf training for six weeks — loading the calf too early can move the implant
- Wound check at seven to ten days and surgeon review at six weeks; further reviews at three and six months are available
The full week-by-week picture is in our calf implant recovery guide.
FAQs
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Calf implants are solid silicone implants placed in the lower leg to add size, shape and definition to the calves. They are made of a firm but flexible silicone elastomer with no gel inside, so there is nothing to leak. Each implant sits in a pocket beneath the fascia over the gastrocnemius muscle, put in through an incision in the crease behind the knee. Calf augmentation with implants uses one or two implants per leg, in standard sizes or custom-made from a CT scan.
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People choose calf implants for two main reasons: calves that stay small despite years of training, and calf atrophy or asymmetry after injury, illness or a condition present from birth. Implants add a defined, permanent volume that exercise often cannot. Calf size is largely inherited, as our guide to why small calves will not grow explains, so it is a common concern for men and women alike.
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Yes, calf implants can restore the shape and symmetry of a calf that has lost muscle bulk. Calf atrophy can follow polio, spina bifida, Charcot-Marie-Tooth disease, spinal cord injury, club foot, compartment syndrome, trauma or previous surgery. Where one leg is much smaller or the muscle shape is irregular, a 3D custom implant can be designed from a CT scan to match the other leg, and one leg alone can be treated. Physiotherapy may be advised alongside recovery.
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Calf implants give a firmer, more defined and predictable increase in size, because a solid implant is not reabsorbed. Fat transfer calf augmentation uses your own fat for a softer, subtler change, but 30 to 40% of it is usually reabsorbed. A second fat session may be needed. Implants suit a bigger change or marked atrophy, while fat transfer suits mild to moderate volume loss or asymmetry if you have enough fat to spare.
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You may be suitable for calf implants if you are 18 or over, in good health, at a stable weight and have calves that are small, uneven or wasted. Enough soft tissue over the calf matters, because very thin lower legs can show the implant edge. You need to stop smoking four weeks before and four weeks after surgery. Calf implants suit both men and women, and if your lower legs have very little tissue cover, fat transfer may suit you better.
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Most people who have calf implants are pleased with them. A 2022 meta-analysis by Escandón and colleagues ↗ pooled 48 studies of 2,455 patients and found 96.7% were satisfied after calf implants, against 87.2% after fat transfer, with 1.3% needing an implant removed. Implants give a lasting change that training often cannot, but they are still surgery, with a scar behind each knee and six weeks before calf training.
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The cost of calf implants depends on how many implants go in each leg, whether one or both legs are treated, and whether you need a custom implant. Custom 3D implants add the cost of CT imaging, design and manufacture. Your price is confirmed in writing after a face-to-face consultation, and compression stockings are bought separately. Our calf implants cost guide sets out starting prices, and finance is available through Chrysalis Finance, subject to status.
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Calf implant surgery takes about two to three hours for both legs, a little longer with two implants per leg. It is a day case under TIVA (total intravenous anaesthesia), so you are asleep throughout and go home the same day. The implant goes in through a 5 to 7 cm incision in the crease behind the knee, and symmetry is checked before closing with dissolvable stitches. Drains are sometimes used and, if so, come out a few days later. A responsible adult must take you home and stay for 24 hours.
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Most people are back at desk work one to two weeks after calf implants, or three to four weeks if their job keeps them on their feet. Walk from day one, but avoid long periods standing for two weeks and running, jumping or calf training for six. Loading the calf too early can move the implant. Support stockings are worn day and night for three weeks, then at night for three more. Our calf implant recovery guide covers each week.
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Correctly sized calf implants look like a fuller, more defined natural calf. The edge may be felt on firm pressure but should not be visible where there is enough soft tissue over the calf, which is why oversizing is avoided. The scar is a 5 to 7 cm line in the crease behind each knee, hidden in the natural fold, and it fades over three to six months. You can see results in our calf augmentation before and after photos.
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Calf implants are generally safe when the implant is sized correctly and placed beneath the fascia, but every operation carries risks. Swelling, tightness and bruising are expected early on. Less common problems include infection, wound healing problems, the implant moving or rotating, and a visible edge in very thin legs. Compartment syndrome is rare but serious; a long-term series by Niechajev and Krag (2017) ↗ reported it in one of 50 patients, so severe or worsening calf pain needs urgent advice.
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Calf implants are designed to last for life. They are solid silicone with no gel to leak, so unlike breast implants they have no replacement schedule. Removal or replacement is only needed if a problem such as the implant moving develops, or if you want a different size. Our guide on whether calf implants need to be replaced explains when revision surgery is considered.
