POPstix — Clinical Pelvic Organ Prolapse Measurement Sticks

A POP-Q (Pelvic Organ Prolapse Quantification) assessment is the internationally standardised clinical method for measuring the severity of pelvic organ prolapse. It was adopted in 1996 by the International Continence Society, the American Urogynecologic Society, and the Society of Gynecologic Surgeons as the gold standard for prolapse assessment.

During a POP-Q examination, six specific anatomical points in the vagina are measured in centimetres relative to the hymen. Points above the hymen are recorded as negative numbers, while points below the hymen are recorded as positive numbers. The measurements are taken during maximum straining (Valsalva manoeuvre) to capture the full extent of any prolapse. The results are used to assign a POP-Q stage from 0 (no prolapse) to IV (complete prolapse beyond the hymen).

POP-Q matters because it replaces subjective descriptions like mild, moderate, or severe with precise, reproducible measurements. This objectivity is important for several reasons. It allows clinicians to accurately track changes in prolapse severity over time — for example, to determine whether a pelvic floor exercise program is stabilising or improving a prolapse. It provides a reliable baseline measurement before surgical intervention and an objective way to assess surgical outcomes. It also ensures that when one healthcare provider refers a patient to another, both practitioners are working from the same objective data rather than subjective impressions.

For patients, POP-Q assessment provides clarity about the current state of their prolapse and a measurable way to track the effectiveness of treatment. Rather than relying on how symptoms feel — which can vary day to day — POP-Q gives a concrete measurement that can be compared over time.

POPstix are used by trained pelvic health practitioners during a POP-Q examination to measure specific anatomical points in and around the vagina. The measurement process follows a standardised protocol that ensures consistency and accuracy.

The patient is positioned in lithotomy (lying on their back with knees bent and feet in stirrups) or left lateral position, and the examination position is documented for consistency with future assessments. The patient should have emptied their bladder and bowel before the examination.

The practitioner uses the calibrated POPstix to measure six vaginal reference points — Aa, Ba, C, D, Ap, and Bp — during maximum straining (Valsalva manoeuvre). Each point is measured in centimetres relative to the hymenal ring. Measurements above the hymen are recorded as negative values, and measurements below the hymen are recorded as positive values. The genital hiatus (GH), perineal body (PB), and total vaginal length (TVL) are also measured using the POPstix.

The thermally embossed 0.5 centimetre markings on each POPstix allow measurements to be taken to the nearest half centimetre, which provides the level of precision required by the POP-Q system. The stick's 17 centimetre total length accommodates the full range of measurements needed for a complete assessment.

After all measurements are recorded, the results are plotted on a standard POP-Q grid and used to assign an overall prolapse stage from 0 to IV. Each POPstix is single-use and disposed of after the examination for infection control purposes.

POPstix are a clinical tool intended for use by trained healthcare practitioners. They are not designed for patient self-assessment at home.

POPstix are used by a range of pelvic health practitioners who perform POP-Q assessments as part of their clinical work. The primary users include pelvic health physiotherapists, urogynecologists, gynaecologists, continence nurse specialists, and women's health practitioners.

Pelvic health physiotherapists are among the most frequent users of POPstix. Physiotherapists routinely perform POP-Q assessments to establish baseline prolapse measurements, monitor the effectiveness of pelvic floor muscle training programs, and track changes in prolapse severity over time. Objective measurement is essential for evidence-based conservative management of prolapse — without reliable measurements, it is difficult to determine whether a treatment program is working.

Urogynecologists and gynaecologists use POPstix for pre-operative prolapse assessment, post-operative outcome measurement, and ongoing clinical monitoring. The standardised measurements provided by POPstix ensure that surgical outcomes can be objectively compared against pre-operative findings.

Continence nurse specialists use POPstix as part of comprehensive pelvic floor assessments, particularly when managing patients with combined prolapse and incontinence symptoms. Accurate prolapse staging helps inform treatment planning and referral decisions.

Researchers also use POPstix in clinical trials and studies investigating prolapse treatments, as the tool provides the standardised, reproducible measurements required for research-grade data collection. Published research has validated the reliability of POPstix measurements between different clinician groups, confirming that the tool produces consistent results regardless of the practitioner's experience level.

POPstix are not intended for patient self-use. POP-Q assessment requires clinical training in anatomy, measurement technique, and interpretation of results.

Yes, POPstix are designed as single-use, disposable measurement tools. Each stick is used for one patient assessment and then disposed of. This single-use design is a deliberate infection control measure — because POPstix are used during vaginal examinations, reuse would present an unacceptable cross-contamination risk between patients.

POPstix are made from renewable timber with thermally embossed measurement markings. The timber construction means they can be disposed of as general clinical waste in accordance with your facility's waste management protocols. Because POPstix do not contain electronic components, batteries, plastics, or hazardous materials, disposal is straightforward and environmentally responsible.

The single-use design also ensures measurement accuracy. Unlike reusable instruments that may become worn, scratched, or difficult to read over time, each POPstix delivers clean, clearly legible 0.5 centimetre markings from first use. This eliminates the risk of measurement error caused by degraded instrument markings.

Each pack of POPstix contains 50 individually wrapped sticks, providing a cost-effective supply for clinical practice. At the typical frequency of POP-Q assessments in a pelvic health clinic, a single pack will last most practitioners several months of regular clinical use.

For practitioners transitioning from reusable rulers or other improvised measurement tools, the move to purpose-built, single-use POPstix represents both an infection control improvement and a measurement accuracy upgrade. The convenience of having a standardised, ready-to-use tool eliminates the need to sterilise or clean measurement instruments between patients.

POPstix are specifically designed for POP-Q measurement accuracy and offer several advantages over alternative measurement methods commonly used in clinical practice.

Before POPstix became available, clinicians typically used standard rulers, tongue depressors, or visual estimation to take POP-Q measurements. Each of these methods introduces variability. Standard rulers are not calibrated for the specific measurement range needed in POP-Q assessments, tongue depressors lack precise measurement markings, and visual estimation is inherently subjective and inconsistent between practitioners.

POPstix address these limitations with a purpose-built design. The measurement scale runs from 0 to 12 centimetres in 0.5 centimetre increments, which matches the precision required by the POP-Q scoring system. The thermally embossed markings are durable and clearly legible during examination, reducing the risk of misreading measurements in clinical conditions.

Published research has specifically evaluated the reliability of POPstix in clinical settings. A study assessing POPstix reliability in POP-Q measurement found good inter-rater reliability between different groups of practitioners — meaning that different clinicians using POPstix on the same patient produced consistent measurements. This reliability is essential for the POP-Q system to function as intended, as prolapse staging depends on accurate and reproducible measurements.

The standardised dimensions of POPstix also contribute to accuracy. The 17 centimetre total length accommodates the full range of POP-Q measurements, including total vaginal length, while the slim profile allows comfortable and precise placement during examination.

For clinical practice, the practical accuracy benefit of POPstix is consistency. When every practitioner in a clinic uses the same standardised measurement tool, the measurements produced are directly comparable — both between practitioners and between assessment sessions over time.

The POP-Q system classifies pelvic organ prolapse into five stages, from Stage 0 (no prolapse) to Stage IV (complete prolapse). POPstix are used to take the precise measurements at each of the six vaginal reference points that determine which stage applies.

Stage 0 indicates no prolapse — all six measurement points are at least 3 centimetres above the level of the hymen, and there is no demonstrable descent of pelvic organs during straining.

Stage I indicates minor prolapse — the most distal portion of the prolapse is more than 1 centimetre above the level of the hymen. At this stage, prolapse is typically not visible externally and may not cause significant symptoms, though some women report a sensation of heaviness or pressure.

Stage II indicates moderate prolapse — the most distal portion of the prolapse is within 1 centimetre above or below the level of the hymen. This is the stage at which many women first notice symptoms such as vaginal bulging, a dragging sensation, or difficulty with bladder or bowel function.

Stage III indicates significant prolapse — the most distal portion of the prolapse extends more than 1 centimetre below the hymen, but not to the extent of complete eversion. At this stage, the prolapse is typically visible and palpable, and symptoms are usually more pronounced.

Stage IV indicates complete prolapse — the vaginal walls are completely everted, with the prolapse extending to or beyond the total vaginal length minus 2 centimetres.

Accurate POP-Q staging using tools like POPstix is critical because treatment decisions are informed by prolapse severity. Conservative management with pelvic floor exercises and pessary use is often the first-line approach for Stage I and II prolapse, while Stage III and IV may require consideration of surgical options alongside conservative measures.

POPstix are available in Australia through Blossom Pelvic Health, which stocks the original POPstix clinical measurement tool for pelvic health practitioners. Blossom Pelvic Health offers delivery across Australia and supplies POPstix in packs of 50 individually wrapped sticks.

Blossom Pelvic Health is a specialist pelvic health supplier that understands the clinical context in which POPstix are used. Unlike general medical supply companies, Blossom specifically serves the pelvic health practitioner community — including pelvic health physiotherapists, urogynecologists, continence nurses, and women's health practitioners — and stocks products that meet the specific needs of pelvic floor clinical practice.

Purchasing through a specialist pelvic health supplier ensures you are receiving the genuine, original POPstix product with the correct measurement specifications for POP-Q assessment. The thermally embossed markings, renewable timber construction, and 0.5 centimetre calibration are specific to the authentic POPstix product.

For clinic owners and practice managers, Blossom Pelvic Health can support ongoing supply needs. At a typical assessment frequency, a pack of 50 POPstix provides several months of clinical use, making it a cost-effective addition to your assessment toolkit.

Blossom Pelvic Health also stocks a broader range of pelvic health clinical tools and devices, including pessaries, pelvic wands, dilator sets, and pelvic floor training devices. If you are setting up or restocking a pelvic health practice, you can source multiple clinical products from a single specialist supplier.

For patients who have been referred for POP-Q assessment, POPstix are a clinical tool used by your practitioner — they are not intended for home use or self-assessment. If you are concerned about pelvic organ prolapse, we recommend consulting a pelvic health physiotherapist who can perform a comprehensive assessment using standardised clinical tools.