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Synovectomy: Procedure, Methods & Recovery

A synovectomy is a surgical procedure in which the inflamed synovial membrane lining a joint is removed. It is most commonly used to treat rheumatoid arthritis.

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Things worth knowing about "Synovectomy"

A synovectomy is a surgical procedure in which the inflamed synovial membrane lining a joint is removed. It is most commonly used to treat rheumatoid arthritis.

What is a Synovectomy?

A synovectomy is a surgical procedure in which the diseased synovial membrane – the thin tissue lining the inside of a joint – is partially or completely removed. Under healthy conditions, the synovial membrane produces synovial fluid, which lubricates the joint and nourishes the cartilage. In certain diseases, particularly inflammatory joint conditions, this membrane becomes thickened and chronically inflamed, leading to progressive damage of cartilage and bone.

Indications: When is a Synovectomy Performed?

A synovectomy is considered when conservative treatments such as medication or physiotherapy have failed to adequately control the disease. Common indications include:

Rheumatoid Arthritis: The most frequent indication. Removal of the inflamed synovium helps prevent joint destruction.
Psoriatic Arthritis: An inflammatory joint disease associated with psoriasis.
Pigmented Villonodular Synovitis (PVNS): A rare, tumor-like condition of the synovial tissue.
Synovial Chondromatosis: Formation of cartilaginous nodules within the synovial membrane.
Hemophilic Arthropathy: Joint damage resulting from repeated bleeds into the joint in patients with hemophilia.
Chronic joint inflammation of other causes that does not respond to medication.

Methods of Synovectomy

Several techniques exist depending on the extent of disease, the joint involved, and the overall health of the patient:

Arthroscopic Synovectomy

This minimally invasive approach involves making small incisions around the joint and inserting a thin camera (arthroscope) along with specialized instruments to remove the synovial tissue. It is associated with faster recovery times and is generally the preferred method for suitable candidates.

Open Synovectomy

In an open synovectomy, a larger surgical incision is made to fully expose the joint. This approach is used when the disease is more advanced or when more complete tissue removal is required.

Radiation Synovectomy (Radiosynoviorthesis)

This non-surgical alternative uses radioactive substances (such as Yttrium-90) injected directly into the joint to destroy the inflamed synovial membrane from within. It is a minimally invasive option, particularly suitable for smaller joints or when surgery is not advisable.

Procedure Overview

Depending on the technique and joint involved, the procedure is performed under general anesthesia or regional anesthesia. In arthroscopic surgery, 2–3 small incisions are made, and the inflamed tissue is removed under direct visualization. The joint is then flushed, and the wounds are closed. A bandage or splint is applied afterward.

Recovery and Rehabilitation

Post-operative rehabilitation is crucial for a successful outcome and typically includes:

Physiotherapy to restore range of motion and muscle strength
Pain management in the days following the procedure
Ice application and elevation of the affected limb to reduce swelling and pain
Regular follow-up appointments with the treating physician
Continuation of disease-modifying medication (e.g., biologics or DMARDs for rheumatoid arthritis)

Full recovery may take several weeks to months depending on the method used and the joint involved.

Benefits and Risks

Synovectomy can significantly reduce joint pain, improve joint function, and slow the progression of joint destruction. However, as with any surgical procedure, it carries certain risks:

Infection at the surgical site
Post-operative bleeding or hematoma
Nerve or blood vessel injury
Joint stiffness (arthrofibrosis)
Recurrence of the synovial inflammation (regrowth of synovial tissue)
General anesthesia-related risks

The risk of recurrence – where the synovial membrane grows back and becomes inflamed again – exists with all methods and is closely linked to the underlying disease and ongoing medical management.

References

Trieb K. Treatment of the wrist in rheumatoid arthritis. J Hand Surg Am. 2008;33(1):113-123. doi:10.1016/j.jhsa.2007.10.009
Sledge CB. Synovectomy of the joint in rheumatoid arthritis. In: Kelley's Textbook of Rheumatology. 9th ed. Elsevier Saunders; 2013.
World Health Organization (WHO): Chronic rheumatic conditions. www.who.int/chp/topics/rheumatic/en

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