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Physiotherapy Rehabilitation Protocol
Severe Right Knee Instability + Mild Osteoarthritis | Elderly Female
Duration: 2 Months | Session Length: 1 Hour
Patient Profile & Clinical Baseline
| Parameter | Detail |
|---|
| Patient | Elderly female |
| Primary diagnosis | Severe right knee instability |
| Secondary diagnosis | Mild knee osteoarthritis (OA) |
| Key deficits | Ligamentous laxity, quadriceps weakness, proprioceptive deficit, pain, gait deviation |
| Treatment setting | Outpatient physiotherapy |
| Session frequency | 5×/week (Weeks 1–4) → 4×/week (Weeks 5–8) |
| Session duration | 1 hour |
Clinical Rationale: Knee instability in elderly women results from a combination of ligamentous laxity, muscle weakness (especially quadriceps and hip abductors), and proprioceptive decline. Superimposed mild OA causes pain and further inhibits quadriceps activation (arthrogenic muscle inhibition). The program must simultaneously address instability, pain, muscle strength, balance, and safe functional mobility — progressing carefully to avoid OA flare-ups. As supported by Non-Surgical Management of Hip & Knee Osteoarthritis guidelines, both neuromuscular and quadriceps strengthening exercise programs show significant and comparable improvements in pain and physical function in knee OA patients.
Phase Overview
| Phase | Weeks | Primary Goals |
|---|
| Phase 1 – Pain Control & Neuromuscular Activation | 1–2 | Reduce pain/swelling, activate inhibited quadriceps, basic proprioception |
| Phase 2 – Stability & Early Strengthening | 3–4 | Build quad/glute/hip abductor strength, improve static balance |
| Phase 3 – Progressive Strengthening & Dynamic Stability | 5–6 | Closed kinetic chain loading, dynamic balance, gait retraining |
| Phase 4 – Functional Independence & Maintenance | 7–8 | ADL function, stair confidence, fall prevention, discharge planning |
SESSION STRUCTURE (1 Hour Template)
| Time Block | Component | Duration |
|---|
| 0:00–0:10 | Warm-up (thermal modality + light mobility) | 10 min |
| 0:10–0:30 | Therapeutic exercises (ROM + strengthening) | 20 min |
| 0:30–0:45 | Neuromuscular & balance training | 15 min |
| 0:45–0:55 | Manual therapy / electrotherapy | 10 min |
| 0:55–1:00 | Cool-down, ice, HEP review | 5 min |
PHASE 1 — Weeks 1–2: Pain Control & Neuromuscular Activation
Goals: Reduce pain and effusion, reactivate inhibited quadriceps, introduce basic proprioception
Frequency: 5×/week
🟡 Warm-Up (10 minutes)
| Intervention | Technique | Duration |
|---|
| Moist heat pack | Applied to anterior and medial right knee | 8 min |
| Seated ankle pumps | Bilateral, rhythmic dorsi/plantarflexion | 2 min |
Heat reduces stiffness and pain before exercise. If significant joint effusion or warmth is present, substitute with ice pack or TENS for first 2–3 sessions.
🟠 Therapeutic Exercises (20 minutes)
1. Quadriceps Setting (Quad Sets)
- Seated or supine, roll under knee for comfort
- Tighten quadriceps, press back of knee into surface, hold 6 seconds
- 3 sets × 15 reps | Rest: 30 sec between sets
- Critical first exercise — directly addresses arthrogenic inhibition
2. Straight Leg Raise (SLR)
- Supine, opposite knee bent; lift straight leg to 45°, hold 3 seconds, lower slowly
- 3 sets × 12 reps
3. Short Arc Quads (SAQ)
- Supine, roll under knee; extend leg from 45° to 0°, hold 3 sec at top
- 3 sets × 12 reps
4. Heel Slides — Knee Flexion ROM
- Supine; slide heel toward buttock, flexing knee through comfortable range
- Maintains ROM and prevents stiffness from OA
- 3 sets × 15 reps
5. Seated Knee Extension (Terminal)
- Seated in chair; extend knee from 90° to full extension
- 3 sets × 12 reps
6. Hip Abduction — Side-Lying (Non-weight bearing)
- Stabilize pelvis; raise top leg to ~30°, lower slowly
- Strengthens hip stabilizers critical for valgus/varus control at knee
- 3 sets × 12 reps
🔵 Neuromuscular & Balance Training (15 minutes)
1. Weight Shifting — Bilateral Stance
- Standing, hold support rail; shift body weight side-to-side and forward-back
- Controlled, slow, 10 repetitions each direction
- 2 sets
2. Single-Leg Stand (Supported) — Left Leg Only
- Hold rail; brief unilateral left limb loading to begin proprioceptive training
- Right knee protected at this stage
- 5 seconds hold × 5 repetitions
3. Tandem Stance (Feet in Line)
- Feet in line (right foot forward), hold support
- 10-second holds × 5 repetitions
- Challenges static balance safely
🟣 Manual Therapy / Electrotherapy (10 minutes)
1. TENS (Transcutaneous Electrical Nerve Stimulation)
- Electrodes over medial and lateral knee
- Frequency: 80–100 Hz (conventional TENS for pain relief)
- 10 minutes
- Evidence supports TENS for OA pain reduction and facilitation of quadriceps activation
2. Patellar Mobilization — Grade I–II
- Gentle superior, inferior, medial, and lateral glides of patella
- 2 minutes, 3 directions
- Maintains patellar tracking and reduces anterior knee pain
3. Gentle Effleurage Massage
- Posterior calf and distal thigh
- Reduces oedema and promotes circulation
- 3 minutes
❄️ Cool-Down (5 minutes)
- Ice pack to right knee: 5 minutes (critical for OA management post-exercise)
- Brief review of Home Exercise Program
Home Exercise Program (Phase 1):
- Quad sets: 3×15, twice daily
- Straight leg raise: 3×12, once daily
- Heel slides: 3×15, once daily
- Ice application after exercise: 10 minutes
PHASE 2 — Weeks 3–4: Stability & Early Strengthening
Goals: Build quadriceps and hip strength, improve static balance on right limb, begin functional loading
Frequency: 5×/week
🟡 Warm-Up (10 minutes)
- Moist heat: 5 min
- Seated marching (hip flexion/extension): 2 min
- Seated ankle circles + knee extensions: 3 min
🟠 Therapeutic Exercises (20 minutes)
1. Mini Squats (0–30°) — Bilateral, Supported
- Hold rail or chair back; shallow squat, stay within pain-free range
- Keep knee aligned over 2nd toe (avoid valgus collapse)
- 3 sets × 15 reps
2. Sit-to-Stand (Chair Rises) — Controlled
- From chair of standard height; slow controlled rise and lowering (3-second eccentric)
- Use armrests as needed for safety
- 3 sets × 10 reps
- Functional exercise directly applicable to daily life; best closed-chain quad activator for this population
3. Standing Hip Abduction — With Support
- Holding rail; right leg abduction to ~30°, slow return
- 3 sets × 15 reps
4. Wall Slides / Wall Squats (0–45°)
- Back against wall, feet 30 cm from wall; slide down to 45° only
- 3 sets × 10 reps | 5-second hold at bottom
5. Calf Raises — Bilateral, Supported
- Rise onto toes, slow lower (3 sec eccentric)
- Strengthens soleus/gastrocnemius for knee dynamic stabilization
- 3 sets × 15 reps
6. Prone Hip Extension
- Lying prone; lift straight right leg, squeeze glute, hold 3 sec
- 3 sets × 12 reps
🔵 Neuromuscular & Balance Training (15 minutes)
1. Single-Leg Stand — Right Limb (Supported)
- Hold rail lightly; stand on right leg, hold 10 seconds
- Progress: fingertip touch only by end of Week 4
- 5 sets × 10 seconds
2. Tandem Walking (Heel-to-Toe)
- Along parallel bars or against wall
- 5 metres × 4 repetitions
- Challenges dynamic balance and gait coordination
3. Step Taps — Forward and Lateral
- Standing; tap right foot onto a small step (5 cm) forward and to the side
- 3 sets × 10 taps each direction
4. Clock Reach (Static Version)
- Standing on left leg (supported); reach right foot to 12, 3, 6, 9 o'clock positions without bearing weight
- Trains dynamic postural control
- 2 sets × complete clock
🟣 Manual Therapy / Electrotherapy (10 minutes)
1. Neuromuscular Electrical Stimulation (NMES) — Vastus Medialis Oblique (VMO)
- Electrode placement over VMO
- Frequency: 50 Hz, pulse width 300 µs
- 10 minutes during quad sets or SLR
- Avramidis et al. demonstrated VMO electrical stimulation significantly improves rehabilitation outcomes (Physical Therapist Management of Total Knee Arthroplasty, p. 26)
2. Grade II–III Tibiofemoral Mobilization
- Posterior glide of tibia on femur in supine
- Maintains joint mobility and reduces stiffness
- 3 sets × 60 seconds
3. Soft Tissue Mobilization — IT Band & Medial Retinaculum
- Myofascial release laterally and medially
- 3 minutes
❄️ Cool-Down (5 minutes)
- Ice: 5 min
- Updated HEP: add sit-to-stand practice (5 reps, 3×/day), single-leg stand right (hold rail, 3×10 sec)
PHASE 3 — Weeks 5–6: Progressive Strengthening & Dynamic Stability
Goals: Progressive closed-chain loading, dynamic balance, gait correction, functional stair training
Frequency: 4–5×/week
🟡 Warm-Up (10 minutes)
- Stationary cycling (if available): 8 min, low resistance, comfortable ROM
- OR: seated marching + heel slides + ankle pumps: 10 min
- Cycling is the preferred warm-up for OA — low impact, joint-friendly, and promotes synovial fluid circulation
🟠 Therapeutic Exercises (20 minutes)
1. Squats — Progressive Depth (0–60°)
- Unsupported or with fingertip touch on rail
- Slow eccentric (4 seconds down), 2-second hold at bottom
- 3 sets × 12 reps
2. Lateral Band Walks — Theraband
- Theraband around thighs (just above knees); side-step 10 steps each direction
- Targets hip abductors and gluteus medius — critical for frontal plane knee stability
- 3 sets × 10 steps each direction
3. Step-Ups — Forward (10 cm step)
- Step up with right foot leading; slow controlled step-down
- 3 sets × 10 reps each leg
4. Terminal Knee Extension (TKE) — Theraband
- Theraband anchored behind knee; from slight flexion to full extension against resistance
- Directly trains VMO and dynamic knee stability in standing
- 3 sets × 15 reps
5. Single-Leg Calf Raise — Right Limb (Supported)
- Progress from bilateral; hold rail, rise on right foot alone
- 3 sets × 10 reps
6. Reverse Lunges (Assisted)
- Hold rail; step right foot back into lunge position, return
- Load distributed safely; less knee stress than forward lunge
- 3 sets × 8 reps each leg
🔵 Neuromuscular & Balance Training (15 minutes)
1. Single-Leg Stand — Right Limb, No Support
- Unsupported for 20–30 seconds
- Eyes open → progress to eyes closed by Week 6
- 5 sets × 20–30 seconds
2. Foam Pad Standing — Bilateral then Unilateral
- Stand on foam pad (unstable surface); bilateral → right unilateral
- 20-second holds × 5 repetitions
- Challenges proprioceptive system significantly
3. Dynamic Clock Reach — Right Limb Weight-Bearing
- Stand on right leg; reach left foot to clock positions
- 2 sets × full clock
4. Gait Retraining — Obstacle Avoidance
- Walk a marked 6-metre course with small obstacles (2 cm cones)
- Emphasize heel-strike, knee extension at mid-stance, appropriate step length
- 5 repetitions of the course
🟣 Manual Therapy / Electrotherapy (10 minutes)
1. Grade III Tibiofemoral Mobilization
- Anterior and posterior tibial glide for full ROM maintenance
- 3 sets × 90 seconds
2. Kinesio Taping — Medial Knee Support
- Apply patellofemoral taping (McConnell technique) or kinesio tape for medial support
- Wear during session and ADLs
- Reduces pain and improves proprioceptive feedback
3. Ultrasound Therapy — Medial Joint Line
- If medial OA tenderness present
- 1 MHz, 1.0 W/cm², 5 minutes pulsed
- Reduces inflammation at medial joint line
❄️ Cool-Down (5 minutes)
- Ice: 5 min
- Updated HEP: add lateral band walks (theraband), TKE with band, foam pad standing
PHASE 4 — Weeks 7–8: Functional Independence & Fall Prevention
Goals: Full ADL independence, stair confidence, fall prevention, safe community ambulation
Frequency: 4×/week
🟡 Warm-Up (10 minutes)
- Stationary cycling: 8–10 min, moderate resistance
- OR: brisk seated warm-up circuit (marching, knee extensions, ankle circles)
🟠 Therapeutic Exercises (20 minutes)
1. Squats — Full Depth (0–90°, pain-free)
- Bodyweight or with 1–2 kg vest if tolerated
- 4 sets × 12 reps
2. Step-Ups — Progressive Height (15–20 cm)
- Right and left lead alternating
- Add light hand weights (0.5–1 kg) if able
- 3 sets × 12 reps each leg
3. Lateral Step-Ups
- Step up sideways onto step (right limb leads)
- Targets VMO, hip abductors and lateral stabilizers
- 3 sets × 10 reps
4. Sit-to-Stand — Without Armrests
- From standard chair, arms crossed on chest
- 3 sets × 12 reps
- Target: complete independently without arm assistance — functional discharge benchmark
5. Hip Strengthening Circuit — Theraband
- Hip abduction, hip extension, hip flexion in standing
- 2 sets × 15 reps each movement
6. Stair Climbing Practice
- Step up and down a 2–3 step flight
- Lead with stronger (left) leg going up; lead with right going down initially
- Therapist guards closely
- 5 ascents/descents per set × 3 sets
🔵 Neuromuscular & Balance Training (15 minutes)
1. Single-Leg Stand — Right Limb, Eyes Closed
- 30-second holds × 5 repetitions
- Near wall for safety
2. Tandem Walking — Unsupported (6 metres)
- No rail; if unsafe, fingertip wall touch
- 5 repetitions
3. Perturbation Training
- Therapist applies gentle, unexpected pushes to shoulders/hips while patient stands
- Trains reactive stability responses
- 5 perturbations × 2 sets each direction
4. Timed Up and Go (TUG) Practice
- Standardized functional test: rise from chair, walk 3 m, turn, return, sit
- Practice 5 repetitions per session; track improvement week by week
- TUG > 13.5 seconds indicates high fall risk in elderly — aim for below this threshold
5. Functional Obstacle Course
- Walk through 10-metre course with turns, directional changes, stepping over objects
- Simulates real-world community walking
- 3 repetitions
🟣 Manual Therapy / Electrotherapy (10 minutes)
1. Grade III–IV Mobilization — Tibiofemoral and Patellofemoral
- Maintain and consolidate ROM gains
- 3 sets × 90 seconds
2. Continued Kinesio Taping
- Medial knee support taping maintained throughout Phase 4
3. Final Functional Assessment
- WOMAC (Western Ontario McMaster Osteoarthritis Index) or KOOS (Knee Injury and Osteoarthritis Outcome Score)
- Timed Up and Go (TUG)
- Single-leg stance time (right limb)
- Manual muscle test: quadriceps grade
❄️ Cool-Down (5 minutes)
- Ice: 5 min
- Final HEP issued (maintenance program for home)
HOME EXERCISE PROGRAM — Phase Summary
| Phase | Home Exercises | Frequency |
|---|
| Weeks 1–2 | Quad sets, SLR, heel slides, ice | 2× daily |
| Weeks 3–4 | Sit-to-stand, single-leg stand (right, supported), calf raises | Daily |
| Weeks 5–6 | TKE with band, lateral band walks, foam pad standing, squats 0–45° | Daily |
| Weeks 7–8 | Squats 0–90°, stair practice, TUG practice, single-leg stand eyes closed | Daily |
Outcome Progression Targets
| Week | Quad Strength | Single-Leg Stance Time (Right) | TUG Time | Functional Goal |
|---|
| Baseline | 2–3/5 (inhibited) | < 5 seconds | > 15 sec | Limited household mobility |
| Week 2 | 3/5 | 5–8 sec | 13–15 sec | Independent transfers |
| Week 4 | 3–4/5 | 10–15 sec | 12–13 sec | Walks household safely |
| Week 6 | 4/5 | 20 sec | 11–12 sec | Community ambulation with device |
| Week 8 | 4–5/5 | 30 sec | < 13 sec | Independent stair use, ADL full independence |
Assistive Device Guidance
| Stage | Recommendation |
|---|
| Weeks 1–2 | Walking frame or quad cane for all ambulation |
| Weeks 3–4 | Single point cane (contralateral hand — left hand for right knee) |
| Weeks 5–6 | Taper cane use indoors; use for community ambulation |
| Weeks 7–8 | Attempt indoor ambulation without device; cane for outdoor/uneven terrain |
Knee Brace: A hinged stabilizing brace or offloading brace for medial OA is recommended throughout the program — reduces instability episodes, offloads medial compartment OA, and improves proprioception.
Special Considerations for Elderly Female Patients
| Concern | Management Strategy |
|---|
| Osteoporosis (common in elderly women) | Avoid high-impact loading; no jumping or plyometrics; ensure vitamin D and calcium intake discussed with physician |
| Fear of falling (kinesiophobia) | Use Falls Efficacy Scale at baseline; provide balance training in safe, guarded environment; reassurance and pain education |
| Cardiovascular deconditioning | Monitor heart rate and exertion (Borg RPE scale, target 11–13); seated rest between sets |
| OA flare management | If knee is swollen, hot, or pain > 5/10: reduce resistance, switch to pool therapy if available, increase TENS and ice |
| Pain management | Keep exercise-related pain ≤ 4/10 during session; post-exercise pain should return to baseline within 1 hour |
| Motivation and adherence | Short-term weekly goals; written HEP with diagrams; family/caregiver involvement; celebrate milestones |
| Weight management | Each 1 kg reduction in body weight reduces knee joint load by ~4 kg; liaise with dietitian if BMI elevated |
Adjunct Therapies (Recommended as Available)
| Therapy | Indication | Frequency |
|---|
| Hydrotherapy / Pool therapy | High pain, severe instability — buoyancy offloads knee | 1–2×/week (Weeks 1–4) |
| TENS | Ongoing pain control | Every session (Phases 1–2) |
| NMES (VMO) | Severe quad inhibition | Every session (Phases 1–3) |
| Ultrasound therapy | Medial OA joint line pain | 3×/week (Phases 1–2) |
| Kinesio taping | Instability, patellar tracking, proprioception | Every session (Phases 2–4) |
Discharge Criteria (End of Week 8)
Disclaimer: This protocol is a clinical guideline to be individualized based on the patient's full assessment, comorbidities (cardiovascular status, osteoporosis grade, BMI), medication profile, and pain tolerance. A physician review of the instability etiology (ligamentous, muscular, neurological) is recommended prior to commencing loading exercises. Modify progression based on weekly pain and function response.