The Hip Flashcards
What are the two main components of the hip joint complex?
The coxafemoral joint and the pelvic girdle
How important is the hip joint’s role in human movement?
“paramount” to mobility and stability during functional tasks
What is considered the “epicenter” of the hip joint complex?
coxafemoral joint
Compare/contrast the CFJ and the GHJ
Similar:
- spheroid
- “ball and socket”
- rotary movements during functional tasks
- move in multiple planes
- proximal, so it can refer pain down the limb
Different:
- CFJ is less mobile, more stable
- GHJ relies on ligamentous stabilization,
- CFJ gains mobility via weight-bearing structures, bony anatomy, and capsuloligamentous components
How does the structure of the CFJ affect the hip joint complex’s capacity for loading?
“stable arrangement of the CFJ allows the hip joint complex to manage tremendous forces and loads imposed during weight-bearing activities.”
How does the structure of the CFJ affect the hip joint complex’s capacity for loading?
“stable arrangement of the CFJ allows the hip joint complex to manage tremendous forces and loads imposed during weight-bearing activities.”
Why does it matter that the CFJ has numerous growth centers in its architecture?
Allows for structural adaptations throughout life
What is the hemipelvis?
Half of the pelvic bone complex. Ilium, Ischium, and Pubis
What does the structure of the ilium tell us about it’s role in human movement?
Large size and multiple attachment points mean that the ilium serves as a mechanical lever for the muscles that control movement and stability of the trunk
What injury commonly occurs at the ASIS? What population is most at risk?
avulsion fracture involving sartorius; adolescent (under 20) athletes
What is the proximal attachment point for the Tensor Fascia Latae
lateral anterior 1/3 of iliac crest
Describe the variability of the pubic bone structure.
Highly variable (race, sex, height, etc.)
What is the connection between the ilium and the pubis, and why is it clinically relevant?
Iliopubic Eminence; the iliopsoas courses over the IPE on its way down to the lesser trochanter of the femur
What is the Pectin Pubis and why is it clinically relevant?
top of the superior pubic ramus (pubis bone) that makes up part of the pelvic brim; serves as the attachment point for the pectineus muscle.
What is the Pectin Pubis and why is it clinically relevant?
top of the superior pubic ramus (pubis bone) that makes up part of the pelvic brim; serves as the attachment point for the pectineus muscle.
Why is the pectineus muscle clinically relevant?
Pectinus attaches to the superior pubic ramus, is an important adductor, and insertional tendinopathy can cause groin pain
List 3 important structures that attach at the Pubic Tubercle. Why is this important to know?
- Rectus Abdominis
- Adductor Longus
- Ilioinguinal Ligament
Patients can present with insertional tendinopathy or ligament injury, leading to pubic/groin pain
Where is the Pubic Tubercle located?
anterior superior aspect of the Pubic Body
Aside from the Pubic Tubercle attachments, what other structure attaches to the Pubic Body? Why is that relevant?
Adductor Brevis; can be a contributor to groin pain
What is the clinical relevance of Adductor Magnus attachment contrasted with other nearby muscles?
musculotendinous attachment is usually too broad to be a source of tendinopathy, but it is predisposed to avulsion fractures of its ischial attachment
What attaches on the ischial tuberosity?
Medially - Adductor Magnus
Laterally - Semimembranosus (most lateral), Semitendinosus, & the long head of Biceps Femoris
What ligament attaches at the Posterior Superior Iliac Spine?
Long Dorsal Sacroiliac Ligament
What is the sacral hiatus? What are important landmarks nearby?
bony tunnel of the sacrum (like central vertebral canal, it protects nerves which exit via the hiatus; sacral horns (cornua) border the hiatus
What type of tissue covers the sacral hiatus? Why is this clinically relevant for epidural injections?
thick, leathery fascia; the fascia needs to be pierced when administering a caudal epidural at the hiatus