How to repair a broken joint on foldable trekking poles?

Repairing a broken joint on a foldable (Z‑pole) trekking pole depends entirely on what is broken. Some issues – like a broken internal shock cord or a stuck push‑button – can be fixed at home with basic tools. Others – like a cracked carbon tube, a broken locking button, or a severely bent ferrule – are not repairable and require replacing the section or the whole pole. Here is a comprehensive guide to diagnosing and fixing common joint problems on folding poles.

1. Understanding foldable pole joints

Foldable trekking poles (e.g., Black Diamond Distance Z, Leki Micro Vario, Fizan Compact) use three sections connected by an internal shock cord (elastic bungee). The joints are secured by a push‑button that clicks into a hole in the outer section, or by an external lever lock (on some models). The shock cord holds the sections together when collapsed and provides tension when extended.

2. Diagnosing the problem

Before you start, work out what is broken:

• Pole won't stay extended – The push‑button may be stuck, the locking hole may be worn, or the shock cord may have lost tension.
• Pole comes apart when extended – The shock cord is broken.
• Pole won't fold – The push‑button is jammed, or the shock cord is too tight.
• Joint is wobbly or misaligned – The ferrule (metal joint) may be loose or worn.

3. Repairing a broken shock cord

A broken shock cord is the most common problem with folding poles.

a. Disassemble the pole – Pull the sections apart. The cord may be snapped or frayed.
b. Remove the old cord – Untie or cut the old cord from the top section. Pull it out through the sections.
c. Measure and cut new cord – Use 2.5–3 mm shock cord (available from outdoor shops or online). Cut it to about 10–15 cm shorter than the total length of all three sections when laid end‑to‑end. The cord needs to be under tension to hold the sections together.
d. Thread the new cord – Starting from the tip section, thread the cord through all three sections. Use a piece of wire or a cord‑threading tool to help.
e. Tie off – Tie a secure knot (e.g., a double overhand knot) at the top end, inside the handle. Leave enough cord so the sections are held together with a slight tension.
f. Test – Fold and extend the pole a few times. The sections should stay together when folded and extend smoothly.

4. Fixing a stuck push‑button

If the button is stuck and won't lock into the hole:

a. Rinse with water – Flush the button mechanism with clean water to remove mud and grit. Do not use oil – it will attract more dirt.
b. Tap gently – Tap the joint against a piece of wood or a soft surface to free the button.
c. Check for ice – In winter, ice can freeze the button. Warm the joint with your hands or place it in a warm (not hot) environment.
d. If still stuck – The button or spring may be damaged. This requires replacing the section.

5. Fixing a loose ferrule

If the metal ferrule (the joint that connects the sections) is loose and rotates:

a. Clean the area – Remove any dirt or old adhesive.
b. Apply epoxy – Use a two‑part epoxy (e.g., Araldite, JB Weld) to glue the ferrule back into the tube. Do not use superglue – it is too brittle.
c. Clamp and set – Hold the ferrule in the correct alignment until the epoxy cures (usually 24 hours).

6. What cannot be repaired

• Cracked or splintered tube – The carbon or aluminium tube is compromised. Replace the section.
• Broken push‑button – The button has snapped off. Replace the section.
• Worn locking hole – If the hole in the outer tube is enlarged, the button will not lock securely. Replace the section.
• Severely bent ferrule – The metal joint is bent. Replace the section.

7. Replacing sections

Many brands sell replacement sections for folding poles:

• Leki – Replacement sections for Jannu FX and Makalu FX models are available. Some sections are user‑replaceable; others require dealer adjustment.
• Black Diamond – Replacement sections for Distance Z poles are available through Adventure Sport.
• Decathlon – Forclaz folding pole sections are available in‑store.
• Fizan – Limited spare parts in the UK; check with the retailer.

8. Getting the tension right

When replacing a shock cord, the tension must be correct:

• Too tight – The pole will be difficult to extend and may not lock fully.
• Too loose – The sections will flop when folded and may separate when extended.
• Correct tension – The cord should hold the sections together when folded, but extend easily with a firm pull.

If you are unsure, have a dealer adjust it – incorrect tension can affect the locking mechanism.

9. When to replace the whole pole

• If the damage is to the upper section (near the grip) and replacement sections are not available.
• If the pole is old and replacement parts are no longer stocked.
• If the cost of a replacement section is close to the cost of a new pole.

10. Safety warning

A broken joint on a folding pole can fail under load, causing a sudden collapse. If you are unsure about a repair, or if the pole shows any sign of structural damage (cracks, splinters, severe bending), do not use it. Replace the section or the pole. Your safety is more important than saving a few pounds on a repair.

11. Final verdict

Repairing a broken joint on a foldable trekking pole is possible for common issues like a broken shock cord or a stuck button. For structural damage (cracked tube, broken button, worn hole), the only safe option is to replace the section. Always use the correct shock cord diameter and tension. If in doubt, have a dealer repair it or replace the pole. A properly repaired folding pole can last many more miles – but a poorly repaired one is a safety hazard.