Butterfly in pole: an inverted position with open legs. What shoulder, hip and trunk must deliver and why only with an instructor, spotter and crash mat.
The honest answer: the butterfly is an inverted position in which the legs are open and the arms form a shape like butterfly wings. There is a longer variation, the extended butterfly. This guide is deliberately not a how-to. It explains what the move demands of your body – and how to check whether your body is ready.
Above all, the butterfly shows one thing: it is not a pure strength move. It needs shoulder stability, hip mobility and trunk tension at the same time. That pole dancers on average are more flexible than untrained people was seen in a study of 30 dancers and 30 controls: they had more mobility in the lower back and back of the thigh and more muscle mass in the arms [1]. But we found no study on this one move – neither on technique nor on injury numbers.
Realistic? The butterfly counts as an intermediate move; how long you need depends on basic invert, mobility and shoulder (experience value, not study evidence).
The move is therefore a good gauge of honesty: if one of the three building blocks is missing, the body compensates – usually with the back or the shoulder, exactly where you least want to lose anything. Anyone who notices this early saves months of forced break.
This section describes no movement sequence but the path there.
Sit on the floor, open your legs as far as without a hollow back and keep the spine long. If your pelvis tips backward, your hip is not there yet. Milestone: you sit for two minutes in a wide straddle without the back rounding or hollowing.
Pole-specific strength can be measured reliably: a protocol with shoulder abduction, shoulder adduction and hip adduction delivered very similar values between two test days (ICC 0.927–0.970) [2]. Interesting for you: in shoulder adduction, left and right differed significantly even in competitive athletes [2]. Meaning: even experienced dancers are not symmetrical. Check both sides.
In a cohort of 66 dancers, the shoulder was the most frequent injury site at 20.4%; the most common trigger was manoeuvres with loaded internal rotation of the upper arm (33.3%) [3]. Meaning: whoever doesn't prove shoulder stability before going upside down carries the greatest risk exactly where it happens most often.
Crash mat, spotter and instructor are ready before anyone puts hands on the pole. The stop word is agreed. Milestone: everyone knows who does what.
Your instructor determines the path to the butterfly – in small stages and close to the floor. We deliberately don't describe it because a text cannot replace real-time feedback.
A systematic review counted 623 injured dancers with 1,803 injuries across five studies; 42.4% hit the upper limb, 44.8% the lower, 10.5% the trunk, and the authors note that many dancers still train without the necessary physical requirements [5]. The head-and-neck risk when falling from an inverted position is documented in a case report: a fall from about one metre led to a cervical spine fracture [6].
Crash mat and spotter are therefore not decoration. Stop with dizziness, head pressure, numbness or pain. This guide explains and motivates; it does not replace supervised training.
Do the hip test on the floor every week at the same time of day and note the minutes. If after four weeks you can sit longer without a hollow back, that is progress that shows immediately – long before you feel it at the pole. And it protects the back when you eventually open upside down.
Once your butterfly is cleared, the shoulder mount remains a pro move – for that, the shoulder counts first.
The butterfly is an inverted position with open legs and a wing-like arm shape. There is a variation, the extended butterfly. It demands shoulder stability, hip mobility and trunk tension.
We did not find full splits as a prerequisite. What matters is a hip opening without a hollow back; it can be tested on the floor.
Upside-down moves carry a real risk: a case report describes a cervical spine injury after a fall from about one metre [6]. With an instructor, spotter and crash mat the risk drops but does not disappear.
That depends on how it is measured. In a cohort of 66 dancers, 20.4% of injuries affected the shoulder [3]; in a survey it was 54.5% of respondents [4].
Shoulder Mount: When the Shoulder Carries Everything