A manikin is a life-sized model of the human body used primarily in medical training, emergency response practice, and art. While the spelling looks like a typo for “mannequin,” it carries its own distinct meaning. Merriam-Webster defines a manikin as “a model of the human body commonly in detachable pieces for exhibiting the parts and organs, their position, and relations.” The word shows up most often in hospitals, nursing schools, paramedic programs, and simulation labs, where practicing on a real person would be dangerous or impossible.
Manikin vs. Mannequin
Both words share the same root, but they’ve split into different lanes. A mannequin is the figure you see in a clothing store, posed in a window display to show off an outfit. A manikin is a functional training tool, built to be examined, intubated, defibrillated, or used as a reference for human anatomy. In medical and emergency services literature, “manikin” is the standard spelling. You’ll see it in CPR certification courses, nursing simulation labs, and even NASA missions. The Artemis I Orion capsule carried two manikins equipped with over 5,600 radiation sensors to measure what astronauts might experience in deep space.
Medical Training Manikins
The most common use of the word today is in healthcare education. Medical manikins range from simple rubber torsos used for CPR practice to sophisticated, computer-driven patient simulators that breathe, bleed, and respond to medication. These tools let students and professionals rehearse high-stakes procedures without putting a real patient at risk.
At the simpler end, a basic manikin might just provide realistic chest compression feedback for a CPR class. Mid-range models add features like airway passages for intubation practice, anatomical openings for catheter or feeding tube insertion, and injectable sites for practicing IV placement or intramuscular injections. Some include interchangeable parts so students can train on procedures specific to different body types and anatomies.
High-fidelity manikins are essentially programmable patients. The Human Patient Simulator, for example, includes cardiovascular, respiratory, neurological, and pharmacological modeling. It connects to real clinical monitors and ventilators and automatically responds when students administer anesthetic gases, oxygen, or drugs. Instructors in a control room can trigger changes in vital signs, introduce complications, or run entire emergency scenarios while students respond in real time.
Specialized manikins exist for nearly every branch of medicine. Childbirth simulators like the Lucina replicate all stages of delivery, from normal birth to emergency complications like shoulder dystocia and eclampsia, and can even generate predicted APGAR scores (a standard newborn health assessment) based on maternal-fetal physiology. Infant and neonatal manikins allow practice in pediatric CPR, airway management, and resuscitation of premature babies. Cardiology trainers can simulate nearly any cardiac disease to teach bedside assessment skills. Endoscopy simulators let trainees practice gastrointestinal and bronchoscopy procedures with realistic tissue feedback.
What They Cost
Pricing varies enormously based on how realistic the manikin needs to be. A basic, non-electronic manikin for physical weight training or simple CPR practice can cost as little as $1,000. Spend between $5,000 and $12,000 and you get more realistic weight, feel, and basic technology components like electronic vital sign feedback. Mid-range simulators with more interactive features run from $15,000 to $35,000.
High-fidelity patient simulators, the kind that breathe, bleed, and respond to drugs, typically fall between $55,000 and $250,000. A well-equipped simulation center at a university or hospital might house several manikins at different fidelity levels, along with dedicated control rooms for running multiple training scenarios at once.
Manikins in Art
Long before medical simulators existed, artists used jointed manikins as studio tools. These small, posable wooden figures helped painters and sculptors study the human form, plan compositions, and observe how fabric drapes across a body. Unlike a live model, a manikin could hold a difficult pose indefinitely, making it especially useful for depicting figures with raised arms, twisting torsos, or physically impossible positions like flying through the air.
European artists used manikins from at least the Renaissance onward, and by the eighteenth century they had become a more standardized piece of studio equipment. The internal structure was a metal “carcass” with parts named after bones: shoulder blade, clavicle, humerus, femur. Ball-and-socket joints, borrowed from skeletal mechanics, allowed multidirectional movement and rotation. The metal frame was padded with filler like cork or hair, then covered in a skin of chamois leather or stitched silk stockings to create a realistic surface for draping fabric. Paris was the major production center, and by the late 1700s, specialist makers were engineering manikins that could mimic specific body movements like the rotation of the hand and forearm.
The simple wooden artist’s manikin you can buy at an art supply store today is a direct descendant of these studio tools. It serves the same basic purpose: providing a posable human reference figure for drawing and composition.
Other Uses
Beyond medicine and art, manikins appear in crash testing (where they measure impact forces on the human body), military training (for combat medic scenarios and rescue drills), and aerospace research. Paramedic and firefighter training programs use manikins with realistic articulation so they can be placed in various settings for extrication or rescue practice. Any field where people need to rehearse physical interactions with a human body, but can’t or shouldn’t use a real person, tends to rely on some form of manikin.