Neck & Shoulder

What It Is

Normal positioning and movement in the finger come from balanced actions of a number of important structures. Ligaments support the finger joints, muscles move and hold the fingers, and tendons control fine movement in each finger joint. Damage to these structures can upset this delicate balance and change the normal alignment of the finger (Cleveland Clinic, 2025). The result is a crooked finger with an "S" shape, known as a swan neck deformity: the middle joint bends backwards and the end joint bends forwards (Steinberg, 2024).

Swan Neck Deformity Anatomy

The anatomy of the hand is complex and intricate. Multiple small joints work together to give you the fine movement needed for threading a needle or tying a shoelace.

In each finger, a network of tendons and muscles called the extensor mechanism works like a set of levers and pulleys. Because these parts balance each other, damage to one part affects the other joints too (Cleveland Clinic, 2025). Conditions that loosen the middle finger joint (PIP joint) and let it bend too far backwards can produce this deformity. Swan neck deformity is characteristic of rheumatoid arthritis, which is the most common cause (Steinberg, 2024; Cleveland Clinic, 2025).

To summarise, the end finger joint (DIP) goes into flexion (bends), and the middle finger joint (PIP) goes into extension (straightens too far).

What Causes a Swan Neck Deformity?

Rheumatoid arthritis and other inflammatory conditions, such as psoriatic arthritis or lupus.
Injuries, such as an untreated mallet finger, a tendon injury or rupture, or a finger fracture.
Looseness (laxity) of the ligaments around the middle finger joint.
Neurological conditions or brain injuries that cause muscle spasticity (tightness).

(Steinberg, 2024; Cleveland Clinic, 2025)

Not a diagnosis — for more information, contact me or another trusted healthcare provider.

Treatment

Self-Care & Treatment

How to Treat a Swan Neck Deformity

Stretching, massage and joint mobilisation can help keep the fingers moving. Massage can't change the shape of the finger, but I can help with the stiffness, aches and tight muscles that come with it, alongside your hand therapist's programme. See the My Approach tab for how I work.

1. Rehabilitation

A hand therapist (a specialist physiotherapist or occupational therapist) can help address the imbalance and give you gentle finger exercises (Cleveland Clinic, 2025). Treatment often also aims to correct the underlying cause, such as a mallet finger (Steinberg, 2024).

Treatments you may want to discuss with your family doctor or nurse practitioner

Options outside my scope

Splints: a hand therapist can provide splints that hold the middle joint so it can't bend too far backwards while still letting it bend; some look like a ring, and in people with rheumatoid arthritis, silver ring splints and ready-made plastic splints worked equally well (van der Giesen et al., 2009). Splints tend to work best for mild deformities where the joint is still supple (Steinberg, 2024).
Surgery: if the joints are very stiff, an injury needs repair or the deformity causes severe disability, a surgeon may release, repair or reposition tendons to rebalance the finger (Cleveland Clinic, 2025; Steinberg, 2024).

How I can help (see the My Approach tab)

Easing the hand, forearm, shoulder and neck

Gentle work for stiff fingers, within your team's limits

Supporting your hand therapist's exercises

Treatment works better in the early stages, but it may not fully correct the deformity, and if a long-term condition caused it, it can come back (Cleveland Clinic, 2025).

Tips

If you notice that your finger is developing a deformity, contact your doctor soon.
Early treatment often leads to the best possible outcome (Cleveland Clinic, 2025).
After treatment, keep up the hand therapy programme given by your hand therapist (Cleveland Clinic, 2025).
Do your finger exercises regularly to help keep your fingers strong and mobile.
Make sure you wear your splint as advised.

Treatment

My Approach

With swan neck deformity, your doctor, surgeon and hand therapist lead the care: they decide on splints, any surgery and your finger exercise schedule. I work alongside that plan. Massage can't change the shape of the finger, but I can help with the stiffness, aches and tight muscles that come with it. If you've had surgery, I need your surgeon's okay before any hands-on treatment.

I start by checking what you've been cleared for, then assess how your fingers, hand, wrist and forearm move, your grip strength, and how you're using your hand day to day.

While You're Splinted or Recovering

Easing the forearm, upper arm, shoulder and neck, which often tense up from guarding the hand
Gentle lymphatic drainage for swelling, and keeping the hand raised
Keeping the joints that aren't involved moving
Wearing your splint exactly as your hand therapist advises

As You're Cleared

Gentle hands-on work and joint mobilisation for stiff fingers, within the limits your team sets
Scar work once the wound has fully healed, if you had surgery
Supporting your hand therapist's exercises, then building grip and hand strength for everyday tasks

If rheumatoid arthritis or another inflammatory condition is the cause, I adjust each session to how your joints are that day; during a flare, sessions are gentler and shorter, and I avoid the most inflamed joints. If a finger suddenly loses movement after surgery, contact your surgeon or hand therapist straight away.

What to Expect

Typical Course

Typical course: Usually visits are once or twice a week early on, or once your surgeon clears you after an operation, then weekly, then spacing out as you manage more on your own, with a reassessment at about 4 to 6 weeks. The timeline follows your hand therapist's or surgeon's plan: after surgery, most people build back to fuller hand use over about three months, and with a long-term condition such as rheumatoid arthritis, regular maintenance visits often work well.

What I Focus On

Working Within Your Team's Plan

Compensation Relief

Swelling Control

Finger & Hand Mobility

Return to Strength

Sources

References

Steinberg, D.R. (2024) Swan-neck deformity. MSD Manual Professional Version. Available at: https://www.msdmanuals.com/professional/musculoskeletal-and-connective-tissue-disorders/hand-disorders/swan-neck-deformity (Accessed: 7 October 2026).
van der Giesen, F.J., van Lankveld, W.J., Kremers-Selten, C. et al. (2009) 'Effectiveness of two finger splints for swan neck deformity in patients with rheumatoid arthritis: a randomized, crossover trial', Arthritis and Rheumatism, 61(8), pp. 1025–1031. doi: 10.1002/art.24866
Cleveland Clinic (2025) Swan neck deformity. Available at: https://my.clevelandclinic.org/health/diseases/swan-neck-deformity (Accessed: 8 October 2026).

Massage therapy · Kitchener–WaterlooSwan Neck Deformity

What It Is

Swan Neck Deformity Anatomy

What Causes a Swan Neck Deformity?

Self-Care & Treatment

How to Treat a Swan Neck Deformity

1. Rehabilitation

Treatments you may want to discuss with your family doctor or nurse practitioner

Tips

My Approach

While You're Splinted or Recovering

As You're Cleared

Typical Course

References

Related Conditions

Book a session

Massage therapy · Kitchener–WaterlooSwan Neck Deformity

What It Is

Swan Neck Deformity Anatomy

What Causes a Swan Neck Deformity?

Self-Care & Treatment

How to Treat a Swan Neck Deformity

1. Rehabilitation

Treatments you may want to discuss with your family doctor or nurse practitioner

Tips

My Approach

While You're Splinted or Recovering

As You're Cleared

Typical Course

References

Related Conditions

Acromioclavicular Joint Separation

Biceps Tendon Tear at the Elbow

Biceps Tendon Tear at the Shoulder

Burners and Stingers

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