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Anatomy
Anatomy

Hip Joint Range of Motion

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Historical reference: its only source is the original reference manual, and some of it may be out of date. Not used for AI answers until re-sourced.

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DefinitionA short reference note, not a full lesson.
Definition

Hip flexion 90° (knee extended) to 120° (up to 135°, knee flexed); hyperextension 10–30°; adduction 30°; abduction 45°; medial rotation 30–45°; lateral rotation 45–60°.

Detail

The primary function of the hip-joint musculature is to support the weight of the head, arms, and trunk both in static erect posture and in dynamic postures. The ranges of motion for the hip joint are:

  • Hip flexion — 90 degrees with the knee extended; 120 degrees (up to 135) with the knee flexed (in this flexed-knee position, tension in the hamstrings is released).
  • Hip hyperextension — 10 to 30 degrees. (The Joint ROM chart lists hip hyperextension as 10–15°, with a handwritten "– 25.")
  • Hip adduction — 30 degrees (limited by the tensor fascia lata and iliotibial band).
  • Hip abduction — 45 degrees (limited by the 2-joint gracilis muscle).
  • Hip medial rotation (inward) — 30 to 45 degrees.
  • Hip lateral rotation (outward) — 45 to 60 degrees.

Key facts

  • Hip flexion: 90° (knee extended); 120° up to 135° (knee flexed — hamstring tension released).
  • Hip hyperextension: 10–30° (chart: 10–15°, handwritten –25).
  • Hip adduction: 30° (limited by tensor fascia lata & iliotibial band).
  • Hip abduction: 45° (limited by 2-joint gracilis).
  • Hip medial (inward) rotation: 30–45°.
  • Hip lateral (outward) rotation: 45–60°.

Connections

Sources

Historical reference · reference manual (page cited)
p.36p.144
Cited authorities in source: Kennedy & Legel (1992).

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Atlas Connections

Hip Abductors
The hip abductors are the gluteus medius and gluteus minimus.
Hip Adductors
The hip adductors are the pectineus, adductor brevis, adductor longus, adductor magnus, and gracilis.
The Hip Complex
The musculature spanning the hip — including the iliopsoas, tensor fasciae latae, sartorius and the iliotibial band — that flexes, extends, adducts, abducts, and rotates the hip.
Hip Extensors
The primary hip extensors are the gluteus maximus and the hamstrings.
Hip Flexors
The 4 major hip flexors — iliopsoas, rectus femoris, tensor fascia lata, sartorius — plus secondary flexors.
Hip Lateral Rotators (6 Short Muscles)
Six short muscles produce lateral (outward) rotation of the hip.
Joint Range of Motion ChartClosely related
Reference table of degree-of-motion values for the hip, knee, spine, arm/shoulder, neck, and foot (Kennedy & Legel, 1992).