Osteoporosis, a Community Core Class, and Three Centimeters of Height
Helen, 68, was diagnosed with osteoporosis three years ago (femoral neck T-score minus 2.8) and had a T7 vertebral compression fracture from a low fall at that time. She takes alendronate weekly with calcium and vitamin D. She has joined a "core and stretch" class at her community center that includes 30 sit-ups, seated spinal twists holding a 4 kg medicine ball, and standing toe touches. She reports a dull mid-back ache after class that lasts a few hours and has noticed her height has dropped about 3 cm since her diagnosis, though she attributes it to "getting older." She wants you to help her "get a strong core" and is wary of lifting weights because she has been told bending is dangerous. She has no pain at rest and no neurological symptoms.
1. Which class movements do you remove or replace, and why?
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Removed: sit-ups, loaded seated twists, standing toe touches.
- Sit-ups and toe touches are repeated spinal flexion, which concentrates compressive and bending loads on the anterior vertebral bodies, precisely the region already fractured.
- Seated twist with a 4 kg ball combines end-range rotation with load, which produces asymmetric stress on vertebral bodies.
- Repetition matters: 30 sit-ups means 30 loaded flexion cycles, not one.
Replacements that train the same intent: isometric and anti-movement core work (front plank, bird dog, Pallof press with light resistance), hip hinge patterning with a neutral spine, and back extension work.
What I tell her. It is not that bending is forbidden; it is that repeated, loaded, end-range flexion is a poor risk trade for someone with a known vertebral fracture. I also explain that I am not removing core training, only the specific positions that load her spine in its weakest direction.
2. The mid-back ache and 3 cm of height loss appear on your intake. What is your next step?
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I stop and refer before continuing. Height loss of roughly 3 cm plus new mid-back pain after a flexion-heavy class is a combination that can indicate a new vertebral compression fracture. Even if the more likely explanation is muscular discomfort from unaccustomed exercise, I cannot distinguish the two and should not try.
What I say. I explain plainly that height loss and mid-back pain together are something her physician should assess, that this is not me being overly cautious, and that I will hold spinal loading until she is assessed. I do not tell her she has a fracture and I do not tell her it is nothing.
What I send. A short written note with the date her height was last recorded if she knows it, the onset and character of the pain, the class content, and my concern. I ask her to bring it to the appointment.
What I do meanwhile. If she is medically cleared for exercise generally, I can work on lower-body strength, balance, and walking without spinal loading. I resume a full program only after her physician responds, and I document both the referral and the response.
3. She believes lifting weights is dangerous. Outline the program you would build once she is cleared, and how you make the case.
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Making the case. I acknowledge where her belief came from, then reframe it: the danger is not load, it is load applied to a spine held in repeated end-range flexion. Progressive resistance and impact are among the few things that stimulate bone, which is why her physician prescribed medication in the first place. Then I show her by having her hip hinge with a dowel along her back, so she can feel the difference between bending and hinging.
Program, two to three times weekly:
- Hip hinge with neutral spine: Romanian deadlifts, then kettlebell deadlifts from a raised position.
- Back extension: prone extensions, progressing to a Roman chair if tolerated.
- Isometric core: plank, side plank from knees, bird dog, Pallof press.
- Lower-body loading: squats to a box, leg press, step-ups, progressing to 70-80% of estimated capacity over months.
- Loaded carries and grip work; balance training; moderate impact (heel drops, stepping) if her physician agrees.
Coaching points. I teach the log roll, the golfer's lift, and safe lifting mechanics, and I program spinal flexion only unloaded and after clearance. Any new back pain halts loading and returns her to her physician.