Hip Internal Rotation 1446 H/2024 A.D PDF

# Hip Internal Rotation ## **1446 H/2024 A.D** ## **Manual Muscle Test 200 PHT- Theoretical Part.** Jazan University, College of Nursing and Health Sciences, Physical Therapy Department. ### **10th lecture_Theoretical Part : Hip Internal Rotation** ### **Objectives:** at the end of this lectu...

# Hip Internal Rotation ## **1446 H/2024 A.D** ## **Manual Muscle Test 200 PHT- Theoretical Part.** Jazan University, College of Nursing and Health Sciences, Physical Therapy Department. ### **10th lecture_Theoretical Part : Hip Internal Rotation** ### **Objectives:** at the end of this lecture the student will be able to: 1. Identify the primary muscles involved in hip internal rotation. 2. Identify the range of motion of hip internal rotation. 3. Describe effect of weakness of hip internal rotation. 4. Describe effect of contracture of hip internal rotation. ### **Content:** 1. Primary muscles involved in hip internal rotation. 2. Range of motion of hip internal rotation. 3. Test procedures for hip internal rotation. 4. Effect of weakness of hip internal rotation. 5. Effect of contracture of hip internal rotation. ## **1. Hip Internal Rotation** ### **Primary Muscles:** 1. Gluteus minimus. 2. Tensor fascia Latae. ### **Accessory Muscles:** 1. Gluteus Medius. 2. Semitendinosus. 3. Semimembranosus. 4. Superior portion of the adductor magnus. 5. Adductors brevis and longus ### **Range of Motion:** - With the knee in flexion, the hip internal rotation is of 45° of motion. - With the knee in extension, the range of motion will have a tendency to be of less amplitude. ### **Factors Limiting Motion:** 1. When hip is extended, tension of iliofemoral ligament. 2. When hip is flexed, tension of ischiocapsular ligament. 3. Tension of hip external rotator muscles. ## **Anatomy of Gluteus minimus muscle.** ### **Origin:** - External surface of the ilium, between the anterior and inferior gluteal lines. - Margin of the greater sciatic notch. ### **Insertion:** - Anterior border of the greater trochanter of the femur and hip joint capsule ### **Nerve supply** - Superior gluteal. ### **Action:** - Abducts, medially rotates, and may assist in flexion of the hip joint. **Figure 1:** Gluteus Minimus Muscle. ## **Anatomy of tensor fascia latae muscle.** ### **Origin:** - Outer surface of anterior iliac crest between tubercle of the iliac crest and anterior superior iliac spine. ### **Insertion:** - Inserted by iliotibial tract into the anterior surface of lateral condyle of tibia ### **Nerve supply** - Superior gluteal nerve ### **Action:** a. Flexion, abduction, and internal rotation of hip. b. In standing posture, it assists gluteus maximus via iliotibial tract to maintain knee joint in extension position. **Figure 2:** Tensor fascia latae Muscle. ## **Effect of weakness of hip internal rotators:** - Weakness of the hip internal rotation of the femur is accompanied by lateral rotation and abducted position of the thigh. ## **Effects of contracture and shortness of hip internal rotators:** a. Accompanied by pronation of the foot and a tendency toward a knock-knee position. b. Inability to laterally rotate the thigh through the full range of motion. c. Inability to sit in a cross-legged position. **Figure 3:** knock-knee