Rehabilitation Guidelines for ACL Reconstruction

Core Rehabilitation Principles

Exercise interventions must be considered the mainstay of ACLR rehabilitation, with all other modalities serving as supplementary tools 1
Strength and motor control training should be combined in the rehabilitation protocol, as neither can replace the other to optimize proprioception and functional recovery 2
A mixed isokinetic-isotonic program achieves superior strength results and reduces muscle atrophy compared to single-modality approaches 2

At least one preoperative visit is mandatory to ensure adequate voluntary muscle activation and absence of flexion contracture 3
Preoperative rehabilitation improves postoperative quadriceps strength, knee range of motion, and may decrease time to return to sport 3

Rehabilitation duration must be criteria-based rather than time-based alone, with patients demonstrating ability to safely return to preinjury activity level 3
Accelerated timelines can be used safely under appropriate conditions without adverse events, though minimum time requirements for graft protection must be respected 3
A 19-week rehabilitation protocol shows no differences in knee laxity or other outcomes compared to longer duration protocols (32 weeks) 3

Cryotherapy is recommended in the early phase as it is inexpensive, easy to use, has high patient satisfaction, and rarely causes adverse events 4
Compressive cryotherapy may be more effective than cryotherapy alone 4
Patient education on safe ice application is necessary to avoid injury 4
Benefits are limited to the first 3 postoperative days for pain medication reduction, knee flexion, and swelling 5
CPM shows beneficial effects on pain medication use, knee flexion, and swelling only during the first 3 postoperative days 5
No difference exists in knee range of motion, pain, and swelling when CPM is compared with active knee motion exercises 5
Low-load blood flow restriction training may improve quadriceps and hamstring strength and prevent disuse atrophy in the early phase 3
Large effects on swelling and subjective pain reduction during training have been demonstrated 3
Preoperative blood flow restriction training produces improved rectus femoris muscle volume and comparable quadriceps isometric strength to standard exercise 3

Add motor control training programs including unstable surface training, backward walking on an inclined treadmill, and dynamic balance exercises to achieve significant improvement in knee joint proprioception 2
Motor control training, particularly backward walking on an inclined treadmill, results in significant improvement in knee proprioception during initial and intermediate phases 2
Proprioceptive deficits can affect both the injured and contralateral knee, suggesting alterations in central neuromuscular control 2
Add core stability exercises to the conventional rehabilitation protocol to improve gait and subjective knee function, though this does not offer benefits for pain 2
A 4-week core stability program during early phase or 6 months of training may improve gait, subjective knee function, and range of motion 6

Plyometric and agility training provide additional benefits on subjective function and functional outcomes compared to usual rehabilitation without increasing laxity or pain 6
The combination of plyometric and eccentric training shows significant improvement in balance, subjective function, and functional activities compared to usual rehabilitation 6
Regardless of intensity, 8 weeks of plyometric exercise has positive effects on knee function, knee impairments, and psychosocial status 6

Return to running requires a combination of time-based, clinical, and functional criteria 6
Most studies propose a minimum timeframe of 12 weeks, though some suggest 8 weeks or 16 weeks 6

A criterion-based approach must replace time-only criteria, incorporating strength tests, clinical examination, performance criteria, hop tests, and patient reports 6
A phase of transition with progressive and controlled exposure to sports must be included before clearance for unrestricted competition 2

Brake response time returns to normal at approximately 4-6 weeks after right-sided ACLR and approximately 2-3 weeks after left-sided ACLR 6

Patient adherence is one of the greatest challenges during ACLR rehabilitation 2
Patient expectations should be discussed and the long rehabilitation journey explained, ideally before surgery 2
Alterations in gait persist even after successful ACL reconstruction, requiring specific motor control exercises to improve movement patterns 2
No conclusive evidence exists that balance and proprioception exercises alone improve pain after ACLR 2
Plyometric and agility training shows no differences in pain compared to usual rehabilitation protocols 2