How To Knit Through Back Loop: Master The Twisted Stitch Technique

How To Knit Through Back Loop: Master The Twisted Stitch Technique

Purl 2 stitches together through the back loop - The Blog - US/UK

Knitting through the back loop (ktbl) is an essential manipulation technique that twists the stitch upon creation, creating a firmer, less elastic column of fabric with a distinct raised visual texture. Mastering this foundational skill unlocks advanced lace patterns, reinforced edgings, and crisp ribbing configurations used throughout modern hand-knitting.

Pre-Procedure Planning for Twisted Stitches

Executing the knit through the back loop technique successfully requires understanding needle orientation and yarn tension dynamics. Unlike a standard knit stitch where the working needle enters the front of the loop from left to right, working through the back loop forces the needle into the rear leg, altering the mount of the stitch and changing the underlying geometry of your knitted fabric.



  • Essential Gear and Tools: A pair of straight or circular knitting needles matching your yarn weight, a practice swatch of smooth worsted-weight yarn in a light color, and a tapestry needle for weaving ends.
  • Mandatory Prerequisite Knowledge: Complete familiarity with the standard knit stitch, the ability to read your knitting to identify the front and back legs of a stitch loop, and basic tension control.
  • Duration and Benchmarks: Approximately 15 to 30 minutes of focused repetition to build muscle memory and achieve consistent tension across a test swatch of twenty stitches.

Step-by-Step Execution of the Knit Through Back Loop Technique



Step 1: Position Your Stitches Correctly

Examine the stitches resting on your left-hand needle. On a standard Western stitch mount, the right leg of each V-shaped stitch sits on the front of the needle, while the left leg dangles down the back. To perform a knit through the back loop, you must ignore the front leg entirely and direct your attention exclusively to that rear leg pointing away from you.

Pro-Tip: If your stitches are mounted "backwards" (eastern or combination knitting where the right leg is in the back and the left is in the front), you must adjust your needle entry point to ensure you are still twisting the stitch correctly. The defining action of ktbl is crossing the right leg behind the left leg.



Step 2: Insert the Right Needle into the Back Leg

Hold your working yarn in your preferred position (continental or English). Take the tip of your right-hand needle and insert it from left to right directly into the back leg of the first stitch on your left-hand needle. The right needle will pass behind the left-hand needle, crossing behind it rather than in front of it as it does in standard knitting.

Warning: This insertion angle requires a slightly different hand movement than standard knitting and can feel awkward initially. Do not force the needle through tight stitches; instead, relax your grip and use the taper of the needle tip to gently open the back loop.



Step 3: Wrap the Working Yarn and Pull Through

Wrap your working yarn counterclockwise around the tip of the right-hand needle, exactly as you would for a conventional knit stitch. Secure the tension of the working yarn with your index finger. Carefully guide the tip of the right needle, carrying the newly wrapped yarn, down and through the back leg of the stitch, ensuring you do not catch adjacent loops.



Step 4: Slip the Old Stitch Off the Left Needle

Once the new loop has been securely pulled through the back leg and rests on the right-hand needle, allow the old stitch to slide completely off the tip of the left-hand needle. Tug gently on the working yarn to snug the new stitch up against the previous one, checking to ensure the base of the stitch appears tightly twisted and leans prominently to the right.


Slip Slip Purl (SSP) and Purl 2 Together Through Back Loop (P2tog tbl ...

Slip Slip Purl (SSP) and Purl 2 Together Through Back Loop (P2tog tbl ...

Technical Parameters and Method Comparisons



Technique Needle Insertion Point Fabric Elasticity Visual Appearance Primary Use Case
Standard Knit (k) Front leg, left to right High Smooth, flat V-shapes Stockinette stitch, general body
Knit Through Back Loop (ktbl) Back leg, left to right Low Twisted, pronounced columns Twisted ribbing, reinforced edges
Knit 2 Together Through Back Loop (k2tog-tbl) Back legs of two stitches Very Low Right-leaning decrease, twisted Lace design, structural shaping
Slip Slip Knit (ssk) Slip two individually, knit together Moderate Left-leaning decrease Garment shaping, sweater shoulders

Common Execution Errors and Field Fixes



  • Root Cause: Splitting the yarn ply while attempting to enter the back leg due to tight tension.

    • Actionable Fix: Relax your working tension and use a needle with a sharper tip. Ensure you are pushing the right needle only through the loop opening rather than piercing the individual strands of the yarn.
  • Root Cause: Inconsistent stitch sizing resulting from the awkward entry angle stretching the fabric.

    • Actionable Fix: Practice working stitches more slowly, keeping your thumb close to the needle tips to stabilize the fabric and prevent the working loop from expanding prematurely.
  • Root Cause: Accidentally working a standard knit stitch instead of a ktbl because of poor visibility on dark yarn.

    • Actionable Fix: Switch to a light-colored, smooth, worsted-weight wool or acrylic yarn for learning. Ensure adequate direct lighting on your hands so you can clearly distinguish the front and back legs of the stitch.

Frequently Asked Questions



What is the difference between a standard knit stitch and a knit through back loop?

A standard knit stitch enters the front leg of the stitch, producing a flat, untwisted loop. A knit through back loop enters the rear leg, which twists the base of the stitch closed, making it tighter, less stretchy, and visually distinct.



Why does my ribbing look wavy until I use ktbl?

Standard knit and purl combinations can sometimes flare out or look loose, especially in 1x1 ribbing. Working the knit stitches through the back loop tightens the transition between the knit and purl columns, yielding crisp, professional, elastic ribbing that hugs the body.



Can I use ktbl for every stitch in a sweater?

While possible, working an entire garment exclusively in ktbl creates an extremely stiff, dense fabric with minimal stretch and consumes significantly more yarn. It is best reserved for cuffs, hems, collars, and decorative structural elements.



How do I abbreviate knit through back loop in knitting patterns?

The universally accepted abbreviation in modern knitting patterns for this technique is ktbl. Occasionally, older or independent patterns may write it out as k-tbl or k-b.

Elevate your handcrafted garments by incorporating crisp twisted stitches into your next sweater or accessory project today.


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