knee- acl- rehabilitation following acute acl pcl lcl pl lateral hamstring repair
This document is a comprehensive, phase‑based clinical rehabilitation protocol for patients who have undergone acute multi‑ligament knee reconstruction (ACL, PCL, LCL, posterolateral corner) combined with lateral hamstring repair. It begins with a pre‑operative phase that emphasizes reducing inflammation, restoring knee extension, activating the quadriceps, and educating the patient while using an elastic wrap or knee sleeve and weight‑bearing as tolerated. Specific pre‑op exercises (ankle pumps, passive knee extension/flexion, straight‑leg raises, quadriceps setting, closed‑kinetic‑chain mini‑squats, lunges) and neuromuscular drills (retro‑stepping, joint repositioning) are outlined, along with muscle stimulation, cryotherapy, and elevation. The immediate post‑operative phase (Days 1‑7) details brace settings (locked at 20° flexion for ambulation, unlocked for sitting), crutch‑assisted weight‑bearing, progressive passive knee extension targets, patellar mobilization, and a daily regimen of ankle pumps, over‑pressure extension, active/passive flexion, straight‑leg raises, hamstring stretches, and closed‑kinetic‑chain exercises. Muscle stimulation (4‑6 h/day) and passive motion (20‑70°) are prescribed, with ice and elevation every hour. Early rehabilitation (Week 1) continues the above exercises, adds proprioception/balance activities, and maintains muscle stimulation and passive motion. Weeks 2‑4 introduce explicit criteria to progress (full passive extension, quad control, PROM 20‑75°, minimal effusion, independent ambulation) and expand the exercise list to include leg press, half‑squats, lunges, low‑intensity cycling, and progressive proprioceptive drills. Swelling control measures are reinforced. The progressive strengthening/neuromuscular control phase (Weeks 4‑10) requires achievement of active ROM 0‑115°, quadriceps strength ≥60% of the contralateral limb, stable KT‑2000 values, and minimal effusion. Goals focus on restoring full ROM (0‑125°), improving lower‑extremity strength, endurance, and neuromuscular confidence. The protocol prescribes a comprehensive exercise suite (leg press, hip ab/adduction, lateral step‑overs, wall squats, balance board perturbations, pool work) and schedules KT‑2000 testing at weeks 4, 6, 8, 10, plus isokinetic testing at week 10. Strength percentages, torque‑to‑body‑weight ratios, and limb‑symmetry indices are emphasized. Advanced activity (Weeks 10‑16) advances criteria to AROM ≥125°, quadriceps strength ≥75% of the opposite side, specific KT‑2000 and isokinetic thresholds, hop test ≥80% of the contralateral leg, and a modified Noyes score ≥80. The focus shifts to power, endurance, and sport‑specific drills, with optional initiation of running, light sport (e.g., golf), and continued neuromuscular training. Return‑to‑activity (Weeks 16‑22) sets final benchmarks: full ROM, unchanged KT‑2000 values, isokinetic criteria, quadriceps ≥80% strength, hamstring ≥110%, torque ratios, proprioceptive and functional test scores ≥100% and ≥85% respectively, and a Noyes score ≥90. The phase emphasizes unrestricted sport participation, maximal strength/endurance, advanced plyometrics, agility, and sport‑specific skill training. Testing (KT‑2000, isokinetic, functional) is required before clearance. Finally, the protocol outlines 6‑ and 12‑month follow‑up assessments (isokinetic, KT‑2000, functional tests) to ensure long‑term recovery. Throughout, the document stresses progressive, criteria‑driven advancement, precise quantitative thresholds, and integration of strength, ROM, neuromuscular control, and functional testing to guide safe return to activity.
Topics
Pre‑Operative Preparation and Patient Education
Goals to reduce inflammation, restore knee extension, activate quadriceps, and educate the patient; includes brace use, weight‑bearing guidance, specific exercises, neuromuscular drills, muscle stimulation, cryotherapy, and elevation.
Immediate Post‑Operative Phase (Days 1‑7) – Brace, Weight‑Bearing, and Early ROM
Brace settings (locked at 20°), crutch‑assisted weight‑bearing, progressive passive extension targets, patellar mobilization, daily exercise list, muscle stimulation schedule, passive motion range, and swelling control measures.
Early Rehabilitation Phase – Week 1 Foundations
Continuation of pre‑op exercises, introduction of proprioception/balance activities, ongoing muscle stimulation, passive motion parameters, and ice/elevation protocol.
Early Rehabilitation Phase – Weeks 2‑4 Progression Criteria and Expanded Exercise Program
Explicit criteria for advancing (quad control, full extension, PROM 20‑75°, minimal effusion, independent ambulation) and an expanded set of exercises (leg press, half‑squats, lunges, low‑intensity cycling, proprioceptive drills) with continued swelling control.
Progressive Strengthening & Neuromuscular Control Phase (Weeks 4‑10)
Entry thresholds (AROM 0‑115°, quadriceps strength ≥60% of contralateral side, stable KT‑2000), goals for full ROM, strength, endurance; comprehensive exercise regimen (leg press, hip ab/adduction, perturbation, pool work); scheduled KT‑2000 and isokinetic testing; quantitative strength and torque benchmarks.