Trochanter: Difference between revisions

Revision as of 20:59, 9 February 2025

A part of the human femur bone

Trochanter

The trochanter is a bony prominence near the proximal end of the femur, the bone of the thigh. In humans, there are two trochanters: the greater trochanter and the lesser trochanter. These structures serve as important sites for muscle attachment and play a crucial role in the movement and stability of the hip joint.

Greater Trochanter

The greater trochanter is a large, irregular, quadrilateral eminence located at the junction of the neck and shaft of the femur. It is palpable under the skin and serves as an attachment point for several muscles, including the gluteus medius, gluteus minimus, and piriformis. The greater trochanter is a key landmark in orthopedic surgery and is often used as a reference point in hip replacement procedures.

Lesser Trochanter

The lesser trochanter is a smaller, conical projection located on the medial side of the femur, below the neck. It serves as the insertion point for the iliopsoas muscle, which is a major flexor of the hip joint. The lesser trochanter is less prominent than the greater trochanter but is equally important for muscle attachment and function.

Function

The trochanters are essential for the attachment of muscles that move the hip joint. The greater trochanter provides leverage for the muscles that abduct and rotate the thigh, while the lesser trochanter is involved in flexing the hip. These bony prominences also help stabilize the hip joint during movement, contributing to the overall biomechanics of walking and running.

Clinical Significance

Injuries or conditions affecting the trochanters can lead to significant pain and mobility issues. Trochanteric bursitis, for example, is a common condition characterized by inflammation of the bursa near the greater trochanter, leading to hip pain. Fractures involving the trochanters, such as intertrochanteric fractures, are also common, especially in the elderly population, and require surgical intervention.

Related Pages

Gallery

Diagram of the femur showing the greater and lesser trochanters.
A replica of an Athenian trireme, illustrating the historical context of the term "trochanter" in ancient Greek.

References

Gray, Henry. Anatomy of the Human Body. 20th ed. Philadelphia: Lea & Febiger, 1918.
Standring, Susan, ed. Gray's Anatomy: The Anatomical Basis of Clinical Practice. 41st ed. Elsevier, 2016.

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-== Trochanter ==
+{{Short description|A part of the human femur bone}}
+{{Use dmy dates|date=October 2023}}
-The trochanter is a bony prominence found in the human body, specifically in the femur bone. It serves as an attachment point for various muscles, tendons, and ligaments, playing a crucial role in the movement and stability of the hip joint. The term "trochanter" is derived from the Greek word "trokhantēr," which means "a runner."
+==Trochanter==
+The '''trochanter''' is a bony prominence near the proximal end of the femur, the bone of the thigh. In humans, there are two trochanters: the greater trochanter and the lesser trochanter. These structures serve as important sites for muscle attachment and play a crucial role in the movement and stability of the hip joint.
-=== Anatomy ===
+===Greater Trochanter===
+The '''greater trochanter''' is a large, irregular, quadrilateral eminence located at the junction of the neck and shaft of the femur. It is palpable under the skin and serves as an attachment point for several muscles, including the [[gluteus medius]], [[gluteus minimus]], and [[piriformis]]. The greater trochanter is a key landmark in orthopedic surgery and is often used as a reference point in hip replacement procedures.
-The femur bone, also known as the thigh bone, is the longest and strongest bone in the human body. It consists of several important anatomical features, including the trochanter. There are two main types of trochanters: the greater trochanter and the lesser trochanter.
+===Lesser Trochanter===
+The '''lesser trochanter''' is a smaller, conical projection located on the medial side of the femur, below the neck. It serves as the insertion point for the [[iliopsoas]] muscle, which is a major flexor of the hip joint. The lesser trochanter is less prominent than the greater trochanter but is equally important for muscle attachment and function.
-The '''greater trochanter''' is a large, prominent bony projection located on the lateral side of the femur. It can be felt on the outer side of the hip and serves as an attachment site for various muscles, such as the gluteus medius, gluteus minimus, and piriformis. These muscles are responsible for hip abduction, rotation, and stabilization.
+==Function==
+The trochanters are essential for the attachment of muscles that move the hip joint. The greater trochanter provides leverage for the muscles that abduct and rotate the thigh, while the lesser trochanter is involved in flexing the hip. These bony prominences also help stabilize the hip joint during movement, contributing to the overall biomechanics of walking and running.
-On the other hand, the '''lesser trochanter''' is a smaller bony prominence situated on the medial side of the femur, near the base of the femoral neck. It provides attachment points for muscles like the psoas major and iliacus, which are collectively known as the iliopsoas muscle. The iliopsoas muscle plays a significant role in hip flexion and stabilization.
+==Clinical Significance==
+Injuries or conditions affecting the trochanters can lead to significant pain and mobility issues. Trochanteric bursitis, for example, is a common condition characterized by inflammation of the bursa near the greater trochanter, leading to hip pain. Fractures involving the trochanters, such as intertrochanteric fractures, are also common, especially in the elderly population, and require surgical intervention.
-=== Function ===
-The trochanters play a crucial role in the movement and stability of the hip joint. They serve as attachment points for various muscles, tendons, and ligaments, allowing for the transmission of forces and facilitating the range of motion in the hip.
-The greater trochanter, being larger and more prominent, provides a broader surface area for muscle attachment. It helps in maintaining the stability of the hip joint during activities such as walking, running, and jumping. Additionally, the muscles attached to the greater trochanter contribute to the abduction and rotation of the hip.
-The lesser trochanter, although smaller in size, is equally important. It serves as an attachment site for the powerful iliopsoas muscle, which is responsible for flexing the hip joint. This muscle is actively involved in activities like climbing stairs, sitting up from a lying position, and kicking.
-=== Clinical Significance ===
-In certain medical conditions, the trochanters can be affected, leading to pain and functional limitations. Trochanteric bursitis is a common condition characterized by inflammation of the bursa located over the greater trochanter. This condition can cause pain and tenderness on the outer side of the hip, especially during activities that involve repetitive hip movements.
-Trochanteric fractures are another clinical concern. These fractures typically occur in older individuals with weakened bones, such as those with osteoporosis. Fractures of the greater trochanter can result in significant pain, difficulty in walking, and impaired hip function.
-=== See Also ===
+==Related Pages==
 * [[Femur]]
-* [[Hip Joint]]
+* [[Hip joint]]
-* [[Bursa (anatomy)]]
+* [[Musculoskeletal system]]
-* [[Osteoporosis]]
-=== References ===
+==Gallery==
+<gallery>
+File:Gray243.png|Diagram of the femur showing the greater and lesser trochanters.
+File:Replica_of_Athenian_trireme_(trieres)._Athens_War_Museum.jpg|A replica of an Athenian trireme, illustrating the historical context of the term "trochanter" in ancient Greek.
+</gallery>
-<references />
+==References==
+* Gray, Henry. ''Anatomy of the Human Body''. 20th ed. Philadelphia: Lea & Febiger, 1918.
+* Standring, Susan, ed. ''Gray's Anatomy: The Anatomical Basis of Clinical Practice''. 41st ed. Elsevier, 2016.
-[[Category:Anatomy]]
+[[Category:Anatomy of the lower limb]]
-[[Category:Skeletal system]]
-[[Category:Musculoskeletal system]]
-[[Category:Orthopedics]]
-[[Category:Human anatomy]]