Creating an Ultra-Slim, Korean Idol-Like Arm Line
Arm liposuction is not a procedure where simply removing as much fat as possible leads to a beautiful result.
This is especially true for patients who are already slim.
For slim patients, the most important points are:
● How much fat should be removed
● Where fat should be preserved
● How much muscle and bone definition should be visible
These details greatly influence the final arm contour.
This case features a 23-year-old female patient, 163cm tall and 47kg, with a BMI of 17.7.
She underwent circumferential arm liposuction and is shown 6 months after surgery.

Case Information
Patient: 23-year-old female
Height: 163cm
Weight: 47kg
BMI: 17.7
Procedure: Circumferential arm liposuction
Amount of fat removed: Approximately 390cc of purified fat
Follow-up: 6 months after surgery
In this case, approximately 390cc of purified fat was removed to create a straighter and more refined upper arm line.
Although the patient was already very slim, with a BMI of 17.7, refining the slight roundness and thickness of the upper arms created a sharper silhouette from the shoulder to the elbow.

Patients with a BMI Below 18 Can Aim for a More Defined Arm Line
For patients with a BMI below 18, total body fat is already low.
This allows for more delicate and precise arm contouring.
At AVAN TOKYO, for selected slim patients, we aim to create an ultra-slim arm line while preserving a very thin superficial fat layer of approximately 2mm.
This type of “sharp and slender” arm line does not mean removing fat down to zero.
Instead, the goal is to carefully adjust the thickness of the subcutaneous fat so that the natural bone and muscle contours are visible without creating unnatural irregularities.

Muscle Definition May Appear During Movement
After arm liposuction, the lines of the deltoid muscle or upper arm muscles may become subtly visible when the patient moves or flexes the arm.
This is not necessarily unnatural.
In patients with a BMI below 18, muscle definition may appear during movement even without liposuction.
In other words, for very slim patients, subtle muscle lines are often a natural feature of the body.
In fact, Korean idols and fashion models often have arm lines where bone and muscle contours are softly visible.

Arm Liposuction Is Not Just Fat Removal. It Is Arm Design.
The key to arm liposuction is not simply the amount of fat removed.
Important design points include:
● Shoulder width and lateral fullness
● The contour of the humeral head
● Deltoid muscle definition
● Thickness of the anterior arm
● Balance with the elbow
● Continuity with the axilla and accessory breast area
● The silhouette from the front, side, and back
Even if the arm itself becomes thinner, the upper body may not look beautiful if the transition to the shoulder, armpit, and accessory breast area is not smooth.
At AVAN TOKYO, we design the arms not as isolated parts, but as part of the entire upper-body silhouette, including the shoulders, back, axilla, breasts, and waist.

In Slim Patients, Even 1–2mm Can Change the Result
In slim patients, how much fat is preserved is extremely important.
If too much subcutaneous fat is left, the result may feel insufficient.
On the other hand, if too much fat is removed, contour irregularities or muscle definition may become too prominent.
For patients with a BMI below 18, even a 1–2mm difference can significantly affect the final result.
At AVAN TOKYO, we carefully adjust the depth and area of liposuction while considering not only thinness, but also naturalness, movement, and long-term beauty.

For Patients Who Want Korean Idol-Like Arms
Korean idol-like arms are not simply thin.
They are characterized by a slim, straight, and refined line from the shoulder to the arm, with minimal excess roundness.
Depending on the angle, the contour of the humeral head or deltoid muscle may be subtly visible.
To achieve this type of arm line, liposuction alone is not enough.
Preoperative weight management and postoperative care are also important.
Patients who can maintain a BMI below 19 are often better suited to creating a very slim and refined arm line.

Arm Liposuction at AVAN TOKYO
At AVAN TOKYO, we design arm liposuction based on each patient’s body type, skeletal structure, muscle volume, and subcutaneous fat thickness.
Our goal is not simply to remove as much fat as possible.
Our goal is to create the most beautiful arm line for each individual patient.
Slim patients require a design suited to slim bodies.
Patients with more fat volume require a different design.
The most important thing is not to perform the same liposuction on everyone, but to create the best line for each person’s body.

Summary
Even in very slim patients, such as those with a BMI of 17.7, arm liposuction can further refine the upper arm line.
However, in slim patients, the balance between removing and preserving fat is extremely important.
To create a naturally thin arm line where the muscle and bone contours are softly visible, delicate surgical design is essential.
Arm liposuction is not just a procedure to remove fat.
It is a procedure to design the shape of the arm and improve the overall impression of the upper body.
At AVAN TOKYO, we provide customized arm liposuction for patients who want a slim, straight, Korean idol-like arm line, carefully considering the balance between bone structure, muscle, and subcutaneous fat.

Risks and Complications
Contour irregularities, pigmentation changes, scarring, swelling, bruising, fibrosis, asymmetry, sensory changes, hematoma, and infection.