Extra points

EX-LE-4 (Nèixīyǎn, 内膝眼) — Inner Knee Eye

View this point in the 3D atlas
Meridian
Extra points (EX)
Anatomical view
anterior
Point classification
Medial knee-eye; counterpart of lateral Xiyan (ST35).
Depth reference
Oblique insertion 0.5-1.0 cun toward the center of the knee, directed slightly laterally.
Moxibustion
Suitable for moxibustion.
Reference aliases
EXLE-4; Neixiyan; 内膝眼; Inner Knee Eye

Anatomical location

On the knee, in the depression medial to the patellar ligament, when the knee is flexed (the medial member of the pair; the lateral one is ST35).

Traditional actions

Activates the channel, benefits the knee and dispels wind-damp.

Recorded indications

Primary: Knee pain, swelling and stiffness; difficulty in flexing and extending the knee

Secondary: Weakness of the leg; beriberi

How to read this reference

AcuAtlas separates anatomical location, traditional classification, recorded actions, indications, insertion-depth references, and moxibustion notes because these fields answer different study questions. The location statement is the orientation anchor. The classification and actions describe traditional reference categories, while indications summarize how checked educational sources associate the point with established teaching material. They are not a recommendation to select or stimulate the point.

Depth and moxibustion entries are reproduced as bounded reference notes rather than procedural instructions. Individual anatomy, technique, angle, clinical setting, and local professional standards can change what is appropriate. Review the cited documents and supervised training material before using any technical field. The normalized map coordinate is included only to place the point on the matching AcuAtlas body plate; it is not a substitute for palpation or anatomical assessment.

Sources

References displayed on this page were recorded with the point dataset.

  1. WHO Standard Acupuncture Point Locations in the Western Pacific Region EX-LE4
  2. Deadman P. A Manual of Acupuncture Extra points

Frequently asked questions

Where is EX-LE-4 located?

On the knee, in the depression medial to the patellar ligament, when the knee is flexed (the medial member of the pair; the lateral one is ST35).

What reference actions and indications are recorded for EX-LE-4?

Activates the channel, benefits the knee and dispels wind-damp. The dataset lists these primary indications: Knee pain, swelling and stiffness; difficulty in flexing and extending the knee Secondary indications are recorded as: Weakness of the leg; beriberi

Is EX-LE-4 safe during pregnancy?

This dataset does not identify EX-LE-4 as one of its five mandatory pregnancy-caution points. That is not a declaration of safety. Pregnancy-related point selection requires individualized assessment by a qualified clinician.