The acetabulum is a key structure in the hip, featuring a notch bridged by the transverse acetabular ligament, which supports the round ligament of the femur. This area is vital for blood supply to the femoral head.
The acetabulum has a notch that is bridge by the transverse acetabulum ligament
The round ligament of the head of the femur arises from the transverse acetabular ligament and inserts onto the fovea capitis of femur. This structure carries blood vessels and head of the femur.
Composed of ilium, ischial, and pubic
Lumbar and hips
Menisci
Reduces localized pressure on the articular surfaces by improving congruency
Increases concavity of the tibial condyle (Joint Stability)
Provides proprioception via tension on coronary ligaments and muscular attachments
Semimembranosus attaches to medial meniscus and Popliteus attaches to lateral meniscus
Gets Nutrition vis osmosis
Physical Therapy Applications
Trendelenburg Sign
If the right gluteal muscle is weak = left side will drop when the patient stands on right leg
Produced when a patient is asked to stand on one leg and the opposite side that is not standing on the ground drops (pelvic drop). Superior glute nerve innervates the gluteus medius and minimus which plays an important role in stabilizing the pelvis during locomotion.
Trochanteric Bursitis
This occurs when there is an inflammation of the bursitis. Results from repetitive actions such as climbing stairs or even running on a treadmill. These movements involve the gluteus maximus which moves superior tendinous fibers repeatedly back and forth over the bursa of the greater trochanter.
Bursae
Ischial Bursa: Located between the Gluteus maximus and the Ischial tuberosity
Gluteofemoral bursa: Located between the Gluteus maximus and then greater trochanter
Trochanter Bursa: Located between the greater trochanter and the gluteus maximus
Obturator Externus Bursa: Located between the Obturator externus muscle and the posterior neck of the femur
Obturator Internus Bursa: Located between the obturator internus muscle and then ischial spine and tuberosity
Gluteal Region
Deep
Superior Gemelles
Obturator Internus
Inferior Gemelles
Quadratus Femoris
The Deep muscles externally rotate the leg
Superficial
Gluteus Maximus
Gluteus Minimus
Gluteus Medius
Tensor Fasia Lata
Gluteus Maximus Externally rotates and extends the leg while the rest of superficial muscles internally rotates
Biomechanics Hip Motion/Lsp Motion/ Lsp Arthrokinematics/ open chain/ closed chain
Closed Chain
Flexion (stand -> sit) Posterior Roll; Anterior glide
Discharges menstrual fluid and other vagina fluids
Male Reproductive Organs
Processes of ejaculation
Urethra
Prostate
Ejaculatory Duct
Ductus Deferens & Seminal Glands
Epididymus
Testes
Lower Limb Muscles
Posterior
Bicep Femoris: Has 2 heads (short head: origin is linea aspera and innervated by common fibular) (long head: origin ischial tuberosity and innervated by the sciatic n. tibial
Semimembranosus
Semitendinosus
Adductor Magnus
Majority innervated by the Sciatic N. tibial portion
Gets supplied by the inferior gluteal artery and perforating branches of the deep femoral artery
Flexes the knee and Extend the hip
Medial Compartment
Adductor Longus
Adductor Brevis
Adductor Magnus: Has 2 components (adductor innervated by the obturator n.) (hamstring portion and innervated by the sciatic n. tibial)
Subtopic
Gracilis
Majority Innervated by the Obturator N.
Adducts the hip
Anterior Compartment
Psoas Major
Pectinous
Sartorius
Performs: Hip flexion, abduction, and external rotation & Knee flexion
Rectus Femoris
Preforms: knee extension & hip flexion
Vastus Medialis
Vastus Lateralis
Vastus Intermedius
Tensor Fascia Latae
Ilium
Majority innervated by the femoral artery
Pelvic Girdle Muscles
Obturator internus
Supports pelvic viscera
Closes floor of inferior bony pelvis
Piriformis
Levator Ani
Pubococcygeus which includes puborectalis & pubovaginalis
Iliococcygeus: Coccygeus (ishiococcygeus)
Iliococcygeus
Blood Supply
Femoral Artery then goes down the adductor canal and exits through the adductor hiatus and turns into popliteal artery
In the femoral triangle, the profunda femoris artery arises and travels posteriorly giving off : perforating branches, lateral femoral circumflex, medial circumflex.
Under the inguinal ligament the femoral nerve then enters the femoral triangle
The internal iliac artery becomes anterior and posterior iliac artery and they innervate the pelvic girdle
External iliac artery turns into femoral artery & internal iliac artery turns into anterior and posterior iliac artery (below the inguinal ligament)
External and internal iliac artery (at L4 and L5)
Common iliac artery
Abdominal aorta
Bones
Pelvic Girdle
Composed of ilium, ischial, pubic known as innominate bone or os coxae
Fused Anteriorly by the pubic symphysis
Fused posteriorly by the sacroiliac joint
Sacrum and coccyx
Function: support the abdomen, links vertebral column to the lower limbs and transmits forces from the lower limbs to the vertebral column through trabecular systems
Tibia
2 Condyles : medial (C shaped) lateral (O shaped)
Patella
seasmoid bone and its embedded into the quadriceps tendon