Trigger finger vs Dupuytren's contracture
In this post, I will compare trigger finger with Dupuytren’s contracture.
First, I will talk about their similarities:
Both conditions cause bending of the affected finger towards the palm.
What are the affected structures?
Trigger fingerinvolves the tendon or the tendon sheath. There is a lump around the tendon that restricts movement.
Dupuytren's contracture affects fascia, a layer found under the skin. It starts with a nodule & pitting in the palm ---> Rope-like cord ---> finger bends towards the palm.
Dupuytren's contracture affects fascia, a layer found under the skin. It starts with a nodule & pitting in the palm ---> Rope-like cord ---> finger bends towards the palm.
Causes:
Trigger finger: over-useDupuytren's contracture: unknown
Affected fingers:
Both conditions can affect any finger.Dupuytren’s contracture: ring & little finger.Trigger finger: thumb.
Pain:
Dupuytren’s contracture: is usually painless.Trigger finger: pain when you press on the lump & during movement.
Hand's function:
What is the effect of dupuytren's contracture & trigger finger on hand's function?First, hand grip: In both conditions, there are no difficulties in closing (bending) of the finger/s. However, there are limitations while straightening the affected finger/s.
Dupuytren’s contracture: when the disease progresses, the cord will start pulling the affected finger/s towards the palm. Then there will be limitations in finger extension.Trigger finger: finger will bend without difficulties however it will be stuck then snapped back into extension.
Dupuytren’s contracture: when the disease progresses, the cord will start pulling the affected finger/s towards the palm. Then there will be limitations in finger extension.Trigger finger: finger will bend without difficulties however it will be stuck then snapped back into extension.
Flexion deformity:
Dupuytren's contracture: cannot be corrected passively.Trigger finger: Can be corrected passively however in severe cases, the finger will be stuck in a bent position and won't be corrected passively like Dupuytren's contracture.
