Background Prehabilitation prior to anterior cruciate ligament reconstruction (ACLR) has been shown to improve preoperative knee function, enhance quadriceps strength, and optimize postoperative recovery. However, access to supervised prehabilitation programmes remains limited. Digital health interventions may improve accessibility, adherence, and continuity of care. Objective To determine whether a structured digital prehabilitation programme is more effective than usual care in improving quadriceps strength and functional outcomes after ACL reconstruction. Methods/design This study is a single-centre, parallel-group, assessor-blinded randomised controlled trial. Adult participants scheduled for primary ACL reconstruction will be randomly allocated to either a usual care group or a digital prehabilitation group. The intervention group will complete a 4-week structured digital prehabilitation programme prior to surgery. Outcomes will be assessed preoperatively and up to 12 weeks postoperatively. Expected Results The digital prehabilitation programme is expected to improve preoperative knee status and enhance postoperative quadriceps strength and functional recovery compared to usual care.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
SINGLE
Enrollment
60
Participants in the intervention group will undergo a structured 4-week digital prehabilitation programme prior to anterior cruciate ligament reconstruction.The programme includes:- Range of motion exercises targeting knee extension and flexion- Strength training focusing on quadriceps, hamstrings, and hip musculature- Neuromuscular and balance training- Patient education on surgical procedure, postoperative expectations, and recovery process- Lifestyle optimisation advice including pain management, nutrition, and emotional supportThe intervention will be delivered through a digital platform with guided exercise sessions and remote supervision.Frequency: 3 sessions per weekDuration: approximately 10-20 minutes per sessionThe programme aims to optimise preoperative knee function, improve quadriceps strength, and enhance postoperative recovery outcomes.
Participants in the control group will receive standard preoperative care, which may include general advice and routine clinical follow-up, but no structured prehabilitation programme.Participants will not receive a supervised or digital exercise intervention prior to surgery.
Quadriceps Isometric Strength
Maximum isometric quadriceps strength measured in seated position at 90° knee flexion. Three repetitions will be recorded, and the highest value will be used
Time frame: 12 weeks postoperative
Knee Extension Range of Motion
Passive knee extension will be measured in degrees using a standard goniometer. Full extension (0°) will be considered optimal preoperative status
Time frame: Baseline and preoperative (prior to surgery)
Knee Pain Intensity
Pain intensity will be assessed using a Visual Analogue Scale (VAS), ranging from 0 (no pain) to 100 (worst imaginable pain)
Time frame: Up to 12 weeks postoperative
Knee Injury and Osteoarthritis Outcome Score (KOOS)
Knee-related symptoms, pain, function in daily living, sport and recreation function, and knee-related quality of life will be assessed using the Knee Injury and Osteoarthritis Outcome Score (KOOS). Each subscale is scored from 0 to 100, where 0 represents extreme problems and 100 represents no problems (best outcome).
Time frame: Up to 12 weeks postoperative
Single Leg Hop Distance
Patients will perform a single-leg hop for maximum distance. The distance will be measured in centimetres
Time frame: Up to 12 weeks postoperative
Pain Catastrophizing
Pain-related catastrophic thinking will be assessed using the Pain Catastrophizing Scale (PCS). The total score ranges from 0 to 52, where higher scores indicate greater levels of pain catastrophizing (worse outcome).
Time frame: Up to 12 weeks postoperative
DASS-21. Depression, Anxiety and Stress
Psychological status will be assessed using the Depression Anxiety Stress Scales (DASS-21). The scale consists of three subscales (depression, anxiety, and stress), each ranging from 0 to 42 after score multiplication. Higher scores indicate greater emotional distress (worse outcome).
Time frame: Up to 12 weeks postoperative
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