Gross Anatomy of the Hip Region: Bones, Joints, and Muscles Review

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HIP REGION:

HIP AND THIGH - BONES AND JOINTS:

Anatomy of the hip and thigh:

Pelvic girdle - structure and function:

Pelvis (pelvic girdle):

Supports and protects abdominal and pelvic organs.

Transmits forces from the head and trunk to the lower limbs.

Provides attachment sites for muscles and ligaments.

Composed of:

Two hip (innominate) bones (ilium, ischium, pubis).

Sacrum and coccyx (form a ring-like bony structure).

Articulations of the pelvis:

Divisions of the pelvis:

Boundaries:

Lesser pelvis (true pelvis):

Boundaries:

Male Vs Female Pelvic Girdle:

Location and structure:

Key landmarks:

Location and structure:

Key landmarks:

Location and structure:

Key landmarks:

Ligament attachments:

Structure and function:

Key features:

Proximal femur (thigh bone):

Structural features:

Components of the proximal femur:

Small central depression on the femoral head.

Neck of femur:

Anatomical neck: epiphyseal line between the head and intertrochanteric line or crest.

Located at the junction of the shaft and proximal extremity.

Greater trochanter:

Lesser trochanter:

Intertrochanteric structures:

Connects the greater and lesser trochanters.

Intertrochanteric crest (posteriorly):

Joints and ligaments:

Articulating surface:

Ligaments:

· Anterior sacroiliac ligament:

○ Motions of the pelvis:

. Potential issues:

· Potential issues:

Symphysis pubis joint:

Acetabulofemoral joint:

Intercoccygeal joint:

Acetabulofemoral joint (hip joint) components:

· Acetabular fossa:

o Ligaments of the hip joint:

. Appearance: inverted Y-shaped, the strongest and thickest ligament of the hip.

· Functions:

· Attachments:

Ischiofemoral ligament (ischiocapsular ligament):

· Functions:

· Attachments:

· Pubofemoral ligament:

· Functions:

○ Other hip ligaments:

· Bridges the acetabular notch.

Ligamentum teres femoris (ligamentum capitis femoris/Ligament of the head of the femur):

· Attachments:

HIP MUSCLES:

· Gluteal region muscles:

Forms the main bulk of the buttock region.

Gluteus maximus:

. Actions:

Gluteus medius:

. Actions:

Gluteus minimus:

· Actions:

Tensor fasciae latae:

. Actions:

Gluteal muscles - deep muscles (short lateral rotator): ○

Deep group:

Piriformis:

Obturator internus and gemelli:

· Innervation:

" Quadratus femoris:

Gluteal region muscles - Clinical slides:

THIGH MUSCLES:

Anterior hip muscles (hip flexor group):

Medial thigh muscles (adductor group):

Posterior thigh muscles (extensor group):

IMPORTANT STRUCTURES IN THE HIP AND THIGH:

Femoral canal:

Adductor canal (Hunter's/subsartorial canal):

Knee region - Bones, Joints, and Muscles

Landmarks of the knee:

Femoral condyles:

Epicondyles:

Popliteal surface:

Proximal tibia: the largest weight-bearing medial bone of the leg.

Tibial landmarks:

Tubercles of the intercondylar eminence:

Anterior border, shin crest:

Interosseous border:

Lateral surface:

Medial surface:

Additional bony features:

Impression for Iliotibial tract: attachment site for the iliotibial band.

Bony features of the patella:

Lateral facet: Larger than the medial facet.

Medial facet: articulates with the medial condyle of the femur.

Functions of the patella:

KNEE JOINTS AND LIGAMENTS:

Patellofemoral joint:

Screw home mechanism:

Ligaments of the knee: Collateral ligaments:

Cruciate ligaments:

MUSCLES OF THE KNEE:

Additional knee flexors:

POPLITEAL FOSSA:

Ankle and Foot - Bones, Joints, and Muscles

Calcaneus (heel bone/Os Calcis):

ANKLE AND FOOT JOINTS AND LIGAMENTS:

MUSCLES OF THE LEG AND SOLE OF THE FOOT:

Muscles of the lateral compartment of the leg:

Muscles of the sole:

ARCHES OF THE FOOT, MECHANISM OF ARCH SUPPORT, AND TARSAL TUNNEL:

Active support (muscular support):

Types of foot arches:

Tarsal tunnel:

Overview

This document provides a comprehensive overview of the anatomy of the hip region, including the pelvic girdle, bones, joints, and muscle groups involved. It discusses the structure and function of these components, as well as their relevance in clinical contexts such as childbirth and movement.

Key Points

1The pelvic girdle supports abdominal organs and transmits force to lower limbs
2The true pelvis is crucial for obstetric relevance and the birth canal
3Key bones include ilium, ischium, and pubis, each with distinct anatomical features
4Various ligaments contribute to hip joint stability and movement
5The document covers muscles of the hip, including functional roles and clinical notes on their implications.

Details

Category: Health and Medicine

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