Osteogenesis imperfecta is a group of genetic conditions that make bones more fragile than usual, so fractures can happen with lower-force impacts or sometimes with everyday activities. It is often called “brittle bone disease”, but osteogenesis imperfecta affects more than just bones because the underlying issue involves connective tissue, particularly type I collagen. Collagen is a key building block in bone and also contributes to the strength and structure of tendons, ligaments, teeth, and parts of the eye and ear.
Severity varies widely. Some people experience only a few fractures across their lifetime and remain very active, while others have frequent fractures, bone deformity, short stature, and complications such as scoliosis (curvature of the spine), breathing issues, and hearing loss. The type and severity influence how early it is diagnosed. Some forms are recognised before birth or at birth, while milder forms may not be identified until childhood or even adulthood when fracture history, low bone density, or features like blue-grey sclerae (a bluish tint to the whites of the eyes) raise suspicion.
Physiotherapy is central to day-to-day management across the osteogenesis imperfecta spectrum. Physiotherapy for osteogenesis imperfecta is not about “pushing through” or maximising load at all costs. Instead, a physiotherapist helps you build strong, efficient movement patterns, improve muscle strength (which supports and protects bones), improve balance and coordination to reduce falls, and plan safe participation in school, work, and sport. Osteogenesis imperfecta physiotherapy exercises are carefully progressed to improve bone and muscle capacity while respecting fracture risk, pain, fatigue, and joint laxity (looser joints). For children, physiotherapy supports motor development, confidence in movement, and safe participation with peers. For adults, physiotherapy often targets pain management, conditioning, fall prevention, joint protection, and maintaining independence.
Because osteogenesis imperfecta is lifelong and can change across life stages, osteogenesis imperfecta rehab is usually most effective when it is proactive and coordinated. Many people benefit from a multidisciplinary team that may include genetics, paediatrics or adult metabolic bone specialists, orthopaedics, occupational therapy, dentistry, audiology, and physiotherapy. Your physiotherapist can help translate medical recommendations into practical plans for everyday movement and activity, and can guide return to sport or exercise after fractures, surgery, or periods of reduced activity.
Key Facts
- International estimates suggest osteogenesis imperfecta affects around 1 in 16,000 to 20,000 births for infants with recognisable osteogenesis imperfecta at birth. 🔗
- An Australian general practice case discussion notes an estimated incidence of about 1 in 10,000 births and describes multiple forms of osteogenesis imperfecta. 🔗
- Treatment aims to prevent or control symptoms, increase bone mass and muscle strength, and maximise independence, and can include physical therapy and occupational therapy as part of management. 🔗
Risk Factors
- Family history of osteogenesis imperfecta or known genetic variant in collagen or related pathways.
- Personal history of multiple low-trauma fractures, especially in childhood.
- Low bone density or repeated fractures with minimal force that do not match the level of trauma.
- Joint laxity and muscle weakness that increase fall risk and injury risk (modifiable with physiotherapy).
- Spinal curvature or vertebral compression changes that can affect posture, breathing mechanics, and mobility.
- Periods of reduced activity after fractures or surgery, which can drive deconditioning and worsen function without osteogenesis imperfecta rehab.
Symptoms
- Recurrent fractures that occur with minimal trauma or with everyday activities.
- Bone pain, muscle fatigue, or reduced tolerance to walking, sport, or standing tasks.
- Short stature or growth differences (varies by type).
- Joint laxity or hypermobility that can contribute to sprains, instability, or altered movement patterns.
- Spinal curvature (scoliosis or kyphosis) and postural changes over time.
- Blue-grey sclerae (bluish tint to the whites of the eyes), especially in some types.
- Dental issues such as brittle or discoloured teeth (dentinogenesis imperfecta) in some individuals.
- Hearing changes that may progress over time, particularly in adulthood for some types.
Aggravating Factors
- Falls, sudden twisting, or contact impacts, especially when balance, strength, or coordination are reduced.
- High-impact jumping and landing tasks, particularly when introduced too quickly without graded osteogenesis imperfecta rehab.
- Carrying heavy loads with poor technique or fatigue, which can increase stress on the spine and long bones.
- Prolonged sitting or poorly supported positions that increase discomfort with scoliosis or vertebral compression changes.
- Rapid increases in exercise volume or intensity without physiotherapy guidance, which can flare pain and raise injury risk.
Causes
Osteogenesis imperfecta is caused by genetic changes that affect how bone and connective tissue are built and maintained. In many people, the underlying problem relates to type I collagen, which is a major structural component of bone. When collagen is altered, bones can be less tough and more likely to fracture. Osteogenesis imperfecta can be inherited or can occur due to a new genetic change (a de novo variant) in a child with no family history.
There are multiple genetic pathways that can lead to an osteogenesis imperfecta phenotype, which is why severity varies widely. Some forms primarily affect collagen structure or amount, while others affect how collagen is processed or how bone-forming cells function. This diversity is one reason why a team approach matters. Medical management may target bone density and fracture risk, while physiotherapy targets the everyday mechanics of movement and function that influence safety, participation, and quality of life.
From a physiotherapy perspective, it is helpful to think in terms of tissue capacity and loading. People with osteogenesis imperfecta may have bones that fracture more easily, but they also often have muscle weakness, joint laxity, and reduced confidence in movement after fractures or surgeries. These factors can increase fall risk and reduce activity levels, which can then further reduce strength and balance. Physiotherapy for osteogenesis imperfecta aims to break that cycle by building safe strength, movement skill, and participation in a way that fits the individual’s type, fracture history, and goals.
How Is It Diagnosed?
Diagnosis is based on a combination of clinical history, physical features, imaging, and genetic testing when appropriate. A clinician will consider fracture history, fracture pattern, growth and skeletal features, family history, and associated signs such as blue-grey sclerae, dentinogenesis imperfecta, hearing changes, and scoliosis. In children, the diagnostic process also carefully considers other causes of fractures to ensure the right explanation is identified.
Physiotherapists do not diagnose osteogenesis imperfecta on their own, but physiotherapists are often involved early because movement difficulty, delayed milestones, frequent injuries, or fear of movement can be presenting problems. A physiotherapist can document functional impacts, observe movement quality and balance, and help coordinate referral to a GP, paediatrician, geneticist, or metabolic bone specialist when the history suggests a bone fragility condition.
Once a diagnosis is confirmed, physiotherapy assessment is focused on function and safety. This includes strength, endurance, range of motion, balance, walking pattern, transfers, stairs, fatigue behaviour, pain patterns, and confidence with movement. These findings guide osteogenesis imperfecta physiotherapy exercises and safe participation plans at home, school, work, and sport.
Investigations & Imaging
- X-ray
- Looks for fracture patterns, bone deformity, vertebral compression changes, and features that support a bone fragility diagnosis.
- Bone density scan (DXA)
- Assesses bone mineral density and can help track response to medical management over time.
- Genetic testing
- Helps confirm the diagnosis and identify the specific genetic cause, which can inform prognosis, family counselling, and management planning.
- Hearing assessment (audiology)
- Screens for hearing loss, which can occur in some forms of osteogenesis imperfecta and may progress with age.
- Dental assessment
- Assesses for dentinogenesis imperfecta and other dental issues that can be part of osteogenesis imperfecta.
Grading / Classification
- Type I (mild, non-deforming)
- Often associated with fewer fractures than more severe types, possible blue-grey sclerae, and typically less bone deformity. Height may be near typical or mildly reduced.
- Type II (perinatal lethal)
- The most severe form, usually identified before or at birth, with significant skeletal involvement.
- Type III (severe, progressively deforming)
- More frequent fractures, progressive bone deformity, short stature, and higher risk of scoliosis and functional limitation.
- Type IV (moderate severity)
- Severity between types I and III, with variable fracture frequency and potential bone deformity. Sclerae are often normal in colour.
Physiotherapy Management
Physiotherapy for osteogenesis imperfecta is aimed at helping people move safely, build strength and fitness, reduce falls and fractures where possible, and maximise independence and participation. Because osteogenesis imperfecta affects both bone strength and connective tissue, physiotherapy planning needs to consider bone fragility, joint laxity, muscle weakness, pain, fatigue, scoliosis, and confidence with movement.
Physiotherapy is typically long-term and adjusts across life stages. For infants and children, physiotherapy supports motor development, safe play, and participation at school while minimising avoidable injury risk. For teenagers, physiotherapy often focuses on progressive conditioning, safe sport participation decisions, and building independence. For adults, osteogenesis imperfecta rehab commonly targets pain management strategies, maintaining strength and balance, preventing falls, and managing spinal and joint symptoms that can accumulate over time.
Most people do best with an individualised plan that is coordinated with medical care. Physiotherapists often work alongside treating doctors and orthopaedics to align rehab with fracture healing, surgical recovery, and medical therapies that influence bone density and fracture risk.
Exercise
Exercise is one of the most valuable tools in osteogenesis imperfecta management, but it needs careful selection and progression. Osteogenesis imperfecta physiotherapy exercises usually prioritise low-impact strengthening and balance work first, then build endurance and functional capacity. Strengthening focuses on key protective muscle groups such as the hips, thighs, trunk, and calves, because stronger muscles help absorb forces and improve control during walking, transfers, and stairs. For many people, progressive resistance exercise is possible, but your physiotherapist will select starting loads and movement ranges that match your fracture history, bone alignment, and joint laxity.
Balance and coordination training is often a high priority because falls are a common pathway to fractures. A physiotherapist may include graded single-leg tasks, stepping strategies, reactive balance drills, and safe agility work for those who want sport participation. For children, play-based balance and coordination tasks are used to build skill and confidence in movement.
Aerobic fitness is also important, but the form matters. Many people tolerate options such as swimming, water-based exercise, cycling, or walking programs well, while higher-impact running and jumping may need modification depending on type and fracture risk. Physiotherapists also consider scoliosis and breathing mechanics, and may include respiratory muscle training or pacing strategies for those with reduced chest wall mobility or fatigue issues.
Exercise progression is guided by function, pain behaviour, fatigue response, and recent fracture history, not just a standard program. The aim is to build lifelong activity habits that support bone and muscle health while reducing avoidable injury risk.
Activity Modification
Activity modification in osteogenesis imperfecta is about making movement safer without taking away independence or participation. A physiotherapist helps identify which activities carry the highest fracture risk for the individual and then adapts the task rather than simply banning it. For example, changing how a child climbs and plays, selecting safer playground options, using protective strategies in PE classes, or adjusting how a person lifts and carries at work can reduce risk while keeping life normal.
Load management is also important. Sudden increases in training volume, new sports, or rapid changes in walking load after a period of inactivity can increase pain and injury risk. A physiotherapist can plan graded progressions, using clear rules for fatigue and next-day symptoms. This approach is particularly valuable after fracture healing or surgery, where the goal is to return to activity without deconditioning or fear-driven avoidance.
For some people, assistive devices are part of safe activity modification. This can include walking aids, wheelchairs for long distances, or mobility supports during flare-ups. A physiotherapist helps ensure devices are used in a way that supports strength and participation, rather than leading to unnecessary loss of capacity.
Manual Therapy
Manual therapy in osteogenesis imperfecta is used cautiously and selectively. It is not aimed at “fixing” bone fragility. Instead, a physiotherapist may use gentle hands-on techniques to help manage muscle tension, improve comfort, and support movement in people who have secondary stiffness or pain around joints and the spine. This can be particularly relevant for people with scoliosis-related discomfort, muscle guarding after fractures, or overuse symptoms from altered movement patterns.
Because bone and connective tissue may be more vulnerable, manual therapy should be gentle, well-justified, and always paired with active strategies. The main drivers of long-term improvement in osteogenesis imperfecta rehab are strength, movement skill, and safe participation habits, rather than passive techniques.
Postural Retraining
Postural retraining in osteogenesis imperfecta often focuses on breathing mechanics, trunk control, and reducing the cumulative strain that comes from scoliosis, vertebral compression changes, or muscle weakness. A physiotherapist may teach positioning strategies for sitting, study, and computer work, and may prescribe exercises that improve trunk endurance and control so the spine is better supported during daily tasks.
For children with developing scoliosis, physiotherapy may include specific trunk strengthening, balance tasks, and strategies to support symmetrical movement and functional posture in play and school activities. For adults, retraining often targets pacing, reducing prolonged positions that trigger pain, and improving movement efficiency for walking, stairs, and transfers.
Bracing & Taping
Bracing and taping may be used in osteogenesis imperfecta for specific purposes, usually as part of an orthopaedic or multidisciplinary plan. Some individuals use spinal bracing for scoliosis management in collaboration with specialist care. Others may use ankle or wrist supports if joint laxity contributes to repeated sprains or instability. A physiotherapist helps ensure bracing supports function and safety while still maintaining muscle strength and confidence in movement.
Taping may occasionally be used to assist proprioception and joint control in people with hypermobility-related symptoms, but it is not a primary treatment for osteogenesis imperfecta itself. Any external support should be matched to the person’s goals, comfort, skin tolerance, and activity demands.
Heat & Ice
Heat and ice can be useful for symptom control in osteogenesis imperfecta, particularly for muscle soreness, overuse pain, or discomfort around scoliosis and altered movement patterns. Ice may help after activity-related flare-ups or minor soft tissue injuries. Heat may assist stiffness and muscle tension, especially before gentle mobility and strengthening exercises. Your physiotherapist will help you choose safe dosing and ensure these strategies support, rather than replace, active osteogenesis imperfecta rehab.
Education
Education is essential in osteogenesis imperfecta because confidence and practical decision-making strongly influence participation and safety. Physiotherapy education covers safe ways to move, lift, transfer, and fall-protect where possible, plus how to return to activity after fractures or surgery. Education also includes understanding pain and fatigue patterns, pacing strategies, and how to build fitness without rapid load spikes.
For families, education often focuses on safe handling, supporting motor development without excessive restriction, school participation planning, and reducing fear-driven avoidance. For adults, education may include fall-risk reduction, strength maintenance plans, workplace and home setup strategies, and recognising signs that need medical review.
Other
Other physiotherapy strategies commonly include falls prevention programs, assistive device prescription and training, hydrotherapy, and return-to-sport planning when appropriate. Physiotherapists also work closely with occupational therapists on home and school modifications that reduce risk while maintaining independence. In some cases, respiratory physiotherapy is important when chest wall stiffness, scoliosis, or reduced fitness affects breathing efficiency.
Physiotherapy is also a key part of recovery after orthopaedic surgery, such as rodding procedures for long bones or spinal surgery. Post-operative osteogenesis imperfecta rehab focuses on safe mobility, protecting healing structures, rebuilding strength and endurance, and regaining independence as early as safely possible.
Other Treatments
Other treatments may include medical therapies aimed at improving bone density and reducing fracture risk, such as bisphosphonates in selected patients, alongside optimising nutrition (including calcium and vitamin D as advised by the treating team). A Cochrane review has evaluated bisphosphonate therapy in osteogenesis imperfecta, reflecting its role within specialist care rather than as a standalone solution.
Occupational therapy is often important for equipment, home modifications, school supports, and energy conservation strategies. Audiology and dentistry are also common parts of care, given the risk of hearing changes and dentinogenesis imperfecta in some individuals. Across all these treatments, physiotherapy remains central for function, strength, mobility, and participation.
Surgery
Surgery in osteogenesis imperfecta is usually aimed at managing fractures, correcting or preventing progressive deformity, and improving function. Common orthopaedic procedures include intramedullary rodding of long bones to support alignment and reduce future fracture risk, as well as surgical management of fractures that are unstable or do not heal well. Spinal surgery may be considered in significant scoliosis or kyphosis when curve progression threatens function, comfort, or breathing mechanics.
Physiotherapy is a key part of surgical care. Pre-operative physiotherapy helps optimise strength, mobility, and safe movement strategies. Post-operative physiotherapy focuses on safe transfers, walking or mobility training, muscle reconditioning, and gradual return to daily activities. Rehabilitation plans must be individualised and coordinated with surgical instructions and fracture healing timelines.
Prognosis & Return to Activity
Prognosis in osteogenesis imperfecta depends strongly on type and severity, fracture frequency, spinal involvement, and access to coordinated care. Some people, particularly those with milder forms, have near typical life expectancy and participate in sport and active work with appropriate planning. Others with more severe forms may have progressive deformity, mobility limitations, and higher medical complexity.
From a functional perspective, physiotherapy can significantly influence outcomes by supporting motor development, building protective strength, improving balance, and maintaining fitness across life. Return to activity after fractures or surgery is usually safest when guided by a structured osteogenesis imperfecta rehab plan that considers pain, fatigue, alignment, and confidence. Physiotherapists often use functional criteria such as quality of transfers, walking endurance, balance performance, safe stair technique, and sport-specific drills (when appropriate) to guide progression.
Importantly, improvement does not always mean “no fractures”. The goals often include fewer avoidable injuries, faster recovery when injuries occur, better independence, better participation, and less fear of movement.
Complications
- Recurrent fractures with associated pain, reduced mobility, and periods of deconditioning if rehabilitation is not well supported.
- Progressive bone deformity or limb length differences that can alter walking mechanics and contribute to overuse pain.
- Scoliosis or kyphosis that can worsen posture, comfort, and in some cases breathing mechanics.
- Chronic pain and fatigue, particularly when strength and fitness are reduced or movement is inefficient.
- Hearing loss in some individuals, often developing or progressing in adulthood.
Preventing Recurrence
- Maintain regular, individualised strength and balance training with a physiotherapist so falls are less likely and everyday forces are absorbed more efficiently by muscles rather than bones.
- Use graded progressions for new exercise, sport, or walking goals to avoid sudden load spikes that increase pain, fatigue, and injury risk in osteogenesis imperfecta.
- Optimise home and school environments to reduce trip hazards and improve safe movement, including lighting, clear pathways, and appropriate footwear, guided by physiotherapy and occupational therapy.
- After any fracture or surgery, follow a structured osteogenesis imperfecta rehab plan to rebuild strength and balance early, because prolonged inactivity can increase future fall risk.
When to See a Physio
- You or your child has had multiple fractures with low trauma, or fear of movement is limiting normal play, sport, or daily activity.
- You want an individualised osteogenesis imperfecta physiotherapy exercise plan to build strength and balance safely.
- There is increasing pain, worsening posture or scoliosis-related discomfort, or reduced walking tolerance affecting school, work, or independence.
- You are recovering from a fracture or surgery and need a staged osteogenesis imperfecta rehab plan for safe return to function.
- Falls are becoming more frequent or confidence is dropping, and you want a falls prevention and mobility plan.