8.2 Amputations and Congenital Musculoskeletal Conditions

Quick Answer: After amputation, prioritise residual limb care, oedema control, contracture prevention, safe mobility, and education. Phantom limb sensation is common and real—differentiate it from residual limb infection or ischaemic pain. Prosthesis readiness is criteria-based (wound, oedema, range, capacity, goals), not calendar days alone. For congenital conditions such as DDH and talipes equinovarus, use early specialist pathways and family-centred care—do not delay with false “wait and see” when fixed deformity is present.

Amputation rehabilitation and congenital musculoskeletal conditions appear on the APC Written Assessment as special-population reasoning problems. You are not expected to run a prosthetic workshop or perform neonatal ultrasound, but you are expected to protect skin and wounds, manage oedema and mobility after limb loss, recognise phantom sensation as a common phenomenon, understand what “readiness” for prosthesis means at a conceptual level, and know that congenital deformities such as talipes equinovarus and developmental dysplasia of the hip (DDH) need early specialist pathways with family-centred support.

Amputation: Contexts You Will See in Cases

Amputation may follow vascular disease (including diabetes-related complications), trauma, infection, tumour, or failed limb salvage. Level (e.g., transtibial, transfemoral, partial foot, upper limb) changes energy cost of walking, socket design implications, and contracture risk patterns. Cause changes medical risk: vascular and diabetic patients need meticulous skin and cardiovascular reasoning; trauma may involve multi-trauma precautions; tumour pathways involve oncology collaboration.

Early physiotherapy goals after lower-limb amputation (exam-ready themes)

1. Medical stability awareness — haemodynamics, pain control, diabetes, infection signs, DVT risk in immobile patients
2. Residual limb care — wound protection per protocol, skin inspection, desensitisation progression when appropriate
3. Oedema management — elevation principles, compression/shrinker use as prescribed by team, avoid dependent positioning for long periods
4. Contracture prevention — especially knee flexion contracture after transtibial amputation and hip flexion/abduction issues after transfemoral amputation; prone lying and extension range where allowed
5. Bed mobility, transfers, wheelchair skills as indicated
6. Core and remaining-limb strength, cardiovascular conditioning within limits
7. Education on phantom sensation vs residual pain vs infection red flags
8. Psychological adjustment support within scope; escalate mental health needs
9. Discharge planning and equipment with OT and the team

Residual Limb Care and Oedema

Residual limb care is daily, systematic, and collaborative with nursing and surgical teams. Inspect for redness, breakdown, drainage, heat, and pressure points once wound care protocol allows patient or carer involvement. Hygiene education (once permitted), moisturiser strategies when skin is intact per protocol, and gradual desensitisation (light touch progression) may be used as the wound heals. Scar mobility work is timed to healing stage—not forced on fragile early tissue.

Oedema is expected early. Uncontrolled oedema delays shaping, increases discomfort, and complicates volume fluctuation later with prosthetic wear. Typical team strategies include positioning, prescribed compression (stump shrinkers), rigid removable dressings or specific protocols depending on centre, and activity progression. Physiotherapists reinforce adherence and watch for vascular or infection signs that are not “normal swelling.”

Red flags post-amputation (escalate): spreading cellulitis signs, fever, wound dehiscence, severe uncontrolled pain change, ischaemic rest pain patterns in remaining limbs, acute dyspnoea (PE consideration), pressure injuries, and acute confusion with systemic illness.

Phantom Sensation, Phantom Pain, and Residual Limb Pain

Phantom limb sensation (feeling the missing limb is still present) is common and usually not a psychiatric invention. Phantom limb pain is painful experience referred to the missing limb. Residual limb pain is pain in the remaining stump and may reflect neuroma, ischaemia, infection, poorly fitting liners later, or musculoskeletal strain.

Entry-level actions:

• Normalise phantom sensation education without minimising distress
• Differentiate infection/wound causes of residual pain from neuropathic phantom pain patterns
• Support graded activity, desensitisation, and team pain strategies (medical/pharmacy lead for medication)
• Mirror therapy, graded motor imagery, and TENS appear in some programmes—know they exist as options within multidisciplinary care rather than promising cure-all claims on exams
• Escalate complex regional-type features, severe sleep-destroying pain, or suicidal distress

Exam nuance: do not label all post-amputation pain as “phantom” and miss residual limb infection. Do not tell patients phantom pain means they are “imagining it.”

Prosthesis Readiness (Introductory Level)

Prosthetic fitting is a team decision involving surgical healing, prosthetist assessment, therapy goals, funding/equipment systems, and patient goals. Physiotherapy contributes criteria-based readiness, not calendar magic alone.

Typical readiness themes (conceptual)

• Wound sufficiently healed and cleared for socket-related loading by the team
• Oedema reasonably controlled and volume more stable
• Adequate joint range (especially extension where needed for alignment)
• Sufficient strength and cardiovascular tolerance for gait training demands
• Skin tolerance progressing; patient can don/doff or has carer support plan
• Cognitive and motivational engagement for learning gait and skin checks
• Realistic functional goals (transfers only vs community ambulation vs sport)
• Home environment and falls risk addressed

Not every person becomes a full-time community ambulator with a prosthesis. Success includes wheelchair mobility, mixed mobility, and quality of life. Co-morbidity (cardiac failure, severe frailty, bilateral high amputation) changes prognosis and goal setting—shared decision-making beats one-size-fits-all “everyone must walk with a prosthesis” messaging.

Gait training principles (high level)

Once cleared: progressive weight acceptance, stance stability, step symmetry goals appropriate to level, aid weaning criteria, skin checks after wear time increases, and monitoring for residual limb skin breakdown. Increase wear time gradually. Socket discomfort requires prosthetist liaison—not “push through open sores.”

Congenital Musculoskeletal Conditions: Exam-Level Priorities

Congenital and developmental MSK conditions span many diagnoses. For Written Assessment depth in this section, focus on early recognition, timely referral, and family-centred care using two high-yield examples: developmental dysplasia of the hip (DDH) and talipes equinovarus (congenital clubfoot).

Developmental dysplasia of the hip (DDH)

DDH describes a spectrum from mild instability to frank dislocation of the infant hip. Early detection improves outcomes; delayed diagnosis can mean more invasive pathways and long-term disability risk. Screening involves newborn and developmental checks (Ortolani/Barlow historically taught; contemporary practice also relies on risk-factor pathways and ultrasound per local guidelines). Physiotherapists in community, paediatric, or orthopaedic pathways may be the professionals who notice asymmetric thigh creases, leg-length concern, limited abduction, limp or waddle when walking age arrives, or parental worry after risk factors (breech, family history, packaging disorders).

Entry-level actions:

• Do not “stretch a dislocated hip” aggressively as DIY treatment
• Urgent/timely paediatric orthopaedic or medical referral when DDH is suspected
• Support families through bracing/Pavlik-type pathways when used (education on skin, positioning as instructed by the treating team—do not freestyle brace protocols)
• Monitor motor development and encourage age-appropriate activity within medical restrictions
• Family-centred communication: clear, non-blaming, culturally safe, written instructions where helpful

Talipes equinovarus (congenital clubfoot)

Clubfoot presents with equinus, varus, adductus, and cavus components of the foot. Contemporary standard pathways often use Ponseti-method principles (serial casting, Achilles tenotomy when indicated, boots-and-bar bracing for maintenance)—delivered by trained orthopaedic/clinical teams. Physiotherapy roles vary by setting: early recognition, supporting casting/bracing adherence education, developmental surveillance, and post-correction motor skills—not improvising corrective casting without training and team authority.

Exam traps:

• Advising parents to “wait until walking age to see if it corrects” when fixed clubfoot is present
• Aggressive passive stretching as sole “cure” instead of established orthopaedic pathway
• Ignoring brace adherence education after correction (relapse risk)
• Blaming parents for congenital deformity

Shared paediatric MSK principles (family-centred care)

Other congenital/developmental conditions you may meet in broader study (limb deficiency, scoliosis pathways, arthrogryposis, osteogenesis imperfecta) share the same skeleton of reasoning: protect vulnerable bone/soft tissue, refer early, function and participation goals, family partnership.

Australian Setting Vignettes

Acute hospital post transtibial amputation (vascular)

Priorities: residual limb elevation and oedema plan, knee extension range, bed mobility and transfer practice, remaining limb protection (especially diabetic foot), education on phantom sensation, cardiovascular pacing, DVT awareness, discharge planning. Do not start aggressive socket gait before wound clearance.

Private practice paediatric concern

Parent brings a 4-month-old with one foot turned inward, rigid on exam, present since birth. Best action is timely orthopaedic/paediatric referral for clubfoot pathway, supportive education, and avoidance of unproven sole stretching programmes that delay effective care.

Community rehab older adult with transfemoral amputation

Mixed goals: wheelchair skills, home access, possible prosthetic candidate evaluation with team, hip extension range, core strength, falls prevention, peer support referral, realistic goal setting with cardiac co-morbidity.

High-Yield Exam Distinctions

Putting It Together for APC MCQs

1. Residual limb first — skin, oedema, range, infection red flags outrank cosmetic prosthesis enthusiasm.
2. Phantom sensation is real and common — educate; differentiate from residual infection pain.
3. Prosthesis readiness is criteria-based and multidisciplinary.
4. Congenital deformity — early specialist pathway beats delayed false reassurance.
5. Family-centred care is a clinical competency, not optional soft skill.
6. Scope — collaborate with prosthetists, orthopaedics, nursing; do not invent brace/cast protocols.

Self-check before moving on

1. Can I list residual limb and oedema priorities after lower-limb amputation?
2. Can I explain phantom sensation without dismissing or over-medicalising?
3. Can I name criteria themes for prosthesis readiness?
4. Can I justify early referral for suspected DDH or clubfoot?
5. Can I describe family-centred behaviours in a paediatric MSK case?

If yes, you are ready for postoperative MSK rehabilitation and exercise prescription, where protocol versus criteria-based progression, FITT dosing, protection of surgical repairs, and DVT awareness dominate exam cases.