Anterior Cruciate Ligament Reconstruction (with Hamstrings Graft) and Stability Plus Programme

This protocol is a general guide to ACL rehabilitation. The time scales are an approximate guide and may be altered depending on various factors such as pain, swelling and muscle control. A knee injury is a common injury for the amateur and professional sportsperson. The treatment of sports injuries has developed in recent years. However, biology has not changed. The time it takes for the knee to heal and for the graft to transform remains the same.


Half of the success of ACL reconstruction comes in the physiotherapy. This stability plus programme gives the new ACL time to heal whilst keeping the knee strong. Once the graft has healed, the key is restoring strength and co-ordination to avoid reinjury. Work within the recommendations of your physiotherapist for the best results.


Rehabilitation aims to protect the reconstruction in the early stages and to maximise the range of motion, strength and function.


Please check the post-operative notes for any variation in management.

Preparation for surgery

  • Build muscle strength. It will be easier to bounce back after surgery
  • Ensure a full range of motion. Preoperative stiffness leads to post-operative stiffness
  • Prepare your home. Stairs can be difficult in the first few days. Do you have a downstairs bed and bathroom?
  • Social-supportive friends and family are very helpful
  • Work preparation. Does your workplace know you are having surgery? Have you considered sedentary work whilst undergoing rehabilitation?
  • Stop smoking and restrict alcohol intake

Weeks 1–2

  • Control swelling and pain
  • Maintain range of motion 0º–90º


  • Toe-touch weight-bearing with elbow crutches
  • Brace 0º–90º
  • Full extension (avoid hyperextension for 12 weeks)
  • Passive and active flexion exercises
  • Ice and modalities to reduce pain and inflammation
  • Circulation exercises
  • Patella mobilisations
  • Static quads exercises (but not beyond 0º)
  • Core stability and glutes exercises
  • ACL graft is at its weakest between 6–12 weeks
  • No open-chain quads (between 0º–50º) for 18 weeks
  • No hyperextension or flexion beyond 120 º for 12 weeks
  • No cyclical loading for 12 weeks (e.g. cycling/wall slides/sit to stand/step-ups/cross trainer)
  • No manual or unpredictable work for 12 weeks

Weeks 2–6

  • Restore control
  • Normalise gait


  • Continue brace 0º–90º
  • Normalise gait—wean off crutches as pain and quadriceps allow
  • Scar massage to prevent adherence
  • Full patella mobility
  • Hamstring management—soft tissue techniques/gentle stretching
  • Commence wall push isometric quads and hamstrings—in supine with legs at 90º and feet against a wall (gravity eliminates ant tibial translation from quads)
  • Commence proprioceptive control—single leg stand (from 3 weeks)

Weeks 6–12

  • Feel more independent


  • Wean out of brace
  • Gradual increase intensity glut/core work (restore control and balance)
  • Active ROM to 120º
  • Gentle hamstrings strengthening exercises (prone knee curls)
  • Continue swelling control, scar management and patella mobility
  • No through range closed chain quads (e.g. no dips/squats/step downs)
  • No gym work
  • No treadmill or cyclical loading
  • No swimming

Weeks 12–18

  • Build strength


  • Full ROM
  • Commence aerobic work including cross trainer and cyclical loading
  • Commence closed chain quadriceps strengthening (isometric/eccentric) e.g. squats, sit to stand, single leg dips
  • Wall slides 60º–90º flexion (isotonic)
  • Swimming—crawl/backstroke only (no breaststroke)
  • No jogging
  • No impact work
  • Progress proprioceptive and rotational control

Weeks 18–24

  • Consolidate gains


  • Commence impact work/running only if full extension and good eccentric quads control
  • Hamstrings and quads regained 80% compared to the unaffected limb—start with trampette, progress to straight line/flat jogging
  • No plyometrics
  • Begin open-chain quads with no resistance
  • Consider Isokinetic Cybex Assessment if appropriate

Months 6–9

  • Prepare for full activities


  • Resisted open-chain quads
  • Introduce plyometrics
  • Progressive introduction of dynamic activity:
    – flat and uphill jogging, progress to downhill
    – jumping/hopping (start on the trampette, emphasis
    on alignment of both push off and land)
    – change of direction; start single direction and progress to cutting, multidirectional and pivoting
    – stopping/starting and acceleration/deceleration
    – lateral hops/z-hops/landing/skipping
  • Before return to sports specific training, the patient must achieve satisfactory single limb dynamic control
  • Consider Isokinetic Cybex Assessment if returning to sport

Months 9+

  • Unrestricted activities


  • If quads and hamstrings 80% power of contralateral consider return to non-competitive training initially, aiming for full competitive sport at 1 year

Functional milestones

  • Driving
  • Swimming
  • Cycling
  • Golf
  • Jogging

6 weeks

12 weeks

12 weeks

RH—R-ACL 6 months, L-ACL 9 months

18–24 weeks

Refer back to the clinic

  • Signs of infection
  • Thrombosis
  • Instability
  • Persistent stiffness > 8/52


Seen in the clinic at approximately

2/52, 6/52, 9/12

If you have questions about physio or rehab or would like to discuss a diagnosis, please arrange a consultation.