What is capsular contracture?

Capsular contracture is the abnormal thickening and tightening of the fibrous capsule that the body naturally forms around a breast implant. While every implant develops a capsule, contracture refers to a capsule that has become abnormally firm, distorting the implant shape and sometimes causing discomfort. Severity is graded I to IV using the Baker classification.

What is the Baker grading system?

Baker grading: I — soft and natural appearance; II — slightly firm but normal appearance; III — firm with visible distortion; IV — firm, distorted, and painful. Grades III and IV typically warrant surgical evaluation; grade II is often monitored.

What causes capsular contracture?

The most commonly cited mechanism is subclinical bacterial biofilm formation on the implant shell. Other contributing factors include hematoma, seroma, implant rupture, smoking, radiation therapy, and subglandular placement. The exact mechanism is multifactorial and not always identifiable in individual cases.

Can capsular contracture be prevented?

No method fully prevents contracture, but evidence-based strategies that may reduce risk include strict aseptic technique, antibiotic irrigation, nipple shields during surgery, dual-plane or subpectoral placement, careful hemostasis, and selection of low-friction shell technologies. Lifestyle factors (avoid smoking, monitor and treat infections promptly) also matter.

How is severe capsular contracture treated?

Baker III/IV typically requires surgical revision: capsulectomy (removal of the capsule) — partial, total, or en-bloc — combined with implant exchange (often to a different shell type). Capsulotomy (capsule release) may be used in selected cases. Recurrence rates after revision vary; surface technology and surgical technique influence outcomes.

Complications

Capsular Contracture After Breast Augmentation: Baker Grading, Causes, Treatment

UNE Plastic Surgery · Dr. Kim Uigeon, board-certified plastic surgeon · Published 2026-05-15

Capsular contracture is the abnormal thickening of the fibrous capsule that the body naturally forms around a breast implant. It is the most common long-term complication after breast augmentation. This article explains the Baker grading system, common mechanisms, prevention strategies, and revision options.

1. The Normal Capsule vs Contracture

Every breast implant becomes surrounded by a thin layer of collagen-based scar tissue — the "capsule." This is a normal foreign-body response and is not in itself a problem. The capsule becomes a clinical issue when it thickens, calcifies, or contracts, distorting the implant and sometimes causing discomfort.

2. Baker Grading System

Grade	Clinical Findings	Typical Management
Baker I	Soft, looks and feels natural.	Monitor.
Baker II	Slightly firm; appearance still normal.	Monitor; review imaging if indicated.
Baker III	Firm; visible distortion of the breast.	Surgical revision typically considered.
Baker IV	Firm, distorted, and painful.	Surgical revision usually indicated.

3. Commonly Cited Mechanisms

Subclinical biofilm

The most widely discussed mechanism is subclinical bacterial biofilm forming on the implant shell. The biofilm can trigger ongoing low-grade inflammation that drives capsule thickening. This concept is the basis for the "14-point plan" used in many evidence-based breast augmentation protocols (e.g., nipple shields, antibiotic irrigation, minimal pocket handling).

Hematoma and seroma

Bleeding or fluid collection around the implant in the early post-op period is associated with higher long-term contracture risk.

Implant rupture

Both intracapsular and extracapsular rupture can drive capsule changes — sometimes through low-grade inflammation, sometimes through direct silicone-tissue contact.

Plane and shell technology

Subglandular (above the muscle) placement historically shows higher contracture rates than dual-plane or subpectoral placement. Macro-textured shells, smooth shells, and nano-textured shells each have different observed contracture patterns in published series.

Other factors

Smoking, radiation therapy, large implants relative to soft-tissue coverage, and personal genetics may also play a role.

4. Prevention Strategies (Evidence-Informed)

Strict aseptic technique; nipple shielding during incision and dissection.
Antibiotic-povidone irrigation of the surgical pocket.
Careful hemostasis; minimize hematoma risk.
"No-touch" insertion technique (e.g., funnel devices).
Dual-plane or subpectoral placement when soft-tissue coverage is thin.
Select shell technology appropriate to anatomy and clinical history.
Avoid smoking, treat infections promptly, attend follow-up imaging.

5. Diagnosis

Capsular contracture is primarily a clinical diagnosis: firmness on palpation, asymmetry, visible distortion, and pain. Imaging (ultrasound, MRI) helps rule out concurrent implant rupture, seroma, and other capsule-related findings (e.g., late seroma evaluation for BIA-ALCL surveillance in patients with prior textured implants).

6. Surgical Treatment

Capsulotomy

Surgical release of the capsule. Less invasive but with higher recurrence rates compared to capsulectomy in many series. Used selectively.

Capsulectomy

Partial or total removal of the capsule. En-bloc capsulectomy removes the implant and capsule as a single unit and may be appropriate in suspected rupture or BIA-ALCL workup. Total capsulectomy removes the entire capsule but the implant is removed first. Partial capsulectomy removes only diseased portions.

Implant exchange and surface choice

Capsulectomy is typically combined with implant exchange. Surface technology is often changed (e.g., from macro-textured to smooth or nano-textured) based on history and contemporary evidence.

Neo-pocket and plane change

In some cases the implant is moved to a new plane (e.g., from subglandular to dual-plane). Acellular dermal matrix (ADM) may be used to reinforce the new pocket.

7. Recurrence and Outlook

Recurrence after revision varies in published data depending on technique, shell choice, plane, and patient factors. Discussion of personalized recurrence risk is part of pre-revision consultation.

In a systematic review of 34 studies, replacing the implant in the same pocket produced recurrence rates of 33-54%, whereas implant exchange combined with a pocket (plane) change lowered recurrence to roughly 0-12%; site change with acellular dermal matrix (ADM) reported recurrence as low as 0-2.6% (Boyd et al., Plast Reconstr Surg 2024). Subpectoral placement was associated with lower risk than subglandular placement (odds ratio 0.35; Haas et al., Aesthet Surg J Open Forum 2025). Recurrence is minimized when capsulectomy, pocket change, and implant exchange are planned together; no technique eliminates it entirely.

8. When to Seek Evaluation

New firmness, asymmetry, or visible shape change of the breast.
Persistent pain or discomfort.
Suspected implant rupture or late seroma.
Any rapid change in size or appearance — prompt evaluation is recommended.

References

Filiciani S, Siemienczuk GF, Etcheverry MG. Smooth versus Textured Implants and Their Association with the Frequency of Capsular Contracture in Primary Breast Augmentation. Plast Reconstr Surg. 2022;149(2):373-382. https://doi.org/10.1097/PRS.0000000000008717
Hammond DC, Chaudhry A. Defining the Relationship between Pocket and Breast Implant Surface Area as the Basis for a New Classification System for Capsular Contracture. Plast Reconstr Surg. 2022;150(3):496-509. https://doi.org/10.1097/PRS.0000000000009487
Boyd CJ, Chiodo MV, Lisiecki JL, Wagner RD, Rohrich RJ. Systematic Review of Capsular Contracture Management following Breast Augmentation: An Update. Plast Reconstr Surg. 2024;153(2):303e-321e. https://doi.org/10.1097/PRS.0000000000010358
Haas E, et al. Capsular Contracture After Breast Augmentation: A Systematic Review and Meta-Analysis. Aesthet Surg J Open Forum. 2025;7:ojaf003. https://doi.org/10.1093/asjof/ojaf003
U.S. Food and Drug Administration. Breast Implants — Patient Resources. https://www.fda.gov/medical-devices/breast-implants

Medical disclaimer. This article is general information and does not constitute medical diagnosis or treatment advice. Results vary with individual tissue condition and body type; accurate diagnosis and surgical planning are determined through in-person consultation with a board-certified plastic surgeon.

— Dr. Kim Uigeon (Board-certified plastic surgeon, Republic of Korea · UNE Plastic Surgery)