Weekend Warriors, Weekday Injuries: Why ACL Tears Are Rising Among Recreational Athletes — and How to Prevent Them

Table of Contents

1. Key Highlights
2. Introduction
3. Why ACL Injuries Are No Longer Just an Athlete’s Problem
4. How ACL Tears Happen: Mechanism and Early Signs
5. Hidden Weaknesses: What Really Sets Up an ACL Tear
6. Evidence-Based Warm-Ups and Prevention Programs That Work
7. A Practical 10-Minute Pre-Match Routine
8. Strength and Balance: A 12-Week Program to Lower ACL Risk
9. Diagnosing an ACL Injury: What to Expect at the Clinic
10. Treatment Options: Non-Operative and Surgical Pathways
11. Rehabilitation: Phases, Milestones and Realistic Timelines
12. Re-Injury and Long-Term Consequences: What Players Should Know
13. Case Studies: How Preparation and Prevention Make a Difference
14. Practical Recommendations for Players, Coaches and Organizers
15. Diagnosis-to-Return Timeline: A Typical Pathway for an Active Person
16. Cost, Access and Local Considerations in Malaysia
17. What the Evidence Says About Prevention Effectiveness
18. How to Know When to See a Specialist
19. Simple Tests You Can Do at Home (Not a Substitute for Professional Care)
20. Common Myths and Misconceptions
21. Where to Start: A Practical Checklist for the Recreational Athlete
22. FAQ

Key Highlights

• ACL injuries are increasing among recreational athletes in Malaysia as more people play sports without adequate physical preparation; 84% of adults reportedly do not get enough regular activity.
• Most ACL tears result from sudden stops, pivots, or awkward landings, but underlying factors such as muscle weakness, poor neuromuscular control, and inadequate warm-up are the true drivers.
• A structured 10-minute pre-match routine, targeted strength and balance training, and clear return-to-play criteria significantly reduce risk and improve recovery outcomes.

Introduction

Weekend games, after-work futsal, social badminton and growing interest in sports like pickleball have put more Malaysians on courts and fields. That’s positive for health, yet a steep rise in anterior cruciate ligament (ACL) injuries among recreational players has followed. Orthopedic specialists are seeing patients whose injuries could have been avoidable: people who join high-intensity activity without the strength, stability or movement patterns needed to protect their knees.

The ACL stabilizes the knee through twists, jumps and rapid direction changes. When it ruptures, the consequences range from weeks of pain and swelling to months of surgery and rehabilitation. This article explains how ACL injuries happen, why they are no longer only a concern for elite athletes, what effective prevention looks like, and how diagnosis, treatment and rehabilitation are managed. Practical, evidence-backed routines and real-world examples appear throughout, designed to help anyone who plays sport keep their knees intact.

Why ACL Injuries Are No Longer Just an Athlete’s Problem

ACL tears used to be a headline injury for elite sportspeople. Clinics now report a different demographic: office workers, teachers, salespeople — recreational athletes who suddenly step up intensity during weekend matches.

Several factors explain the shift:

• Growing participation in recreational sports without commensurate conditioning. Official figures suggest 84% of adults do not meet recommended physical activity levels, leaving a large portion of new or returning players underprepared.
• Popularity of fast, stop-start sports such as futsal, volleyball, badminton and pickleball, which place repeated acute loads on knees.
• An increased willingness to play at higher intensity after sedentary weekdays, rather than gradually building workload across days.

Real-world example: a man in his 20s suffered a complete ACL tear while landing from a spike in a social volleyball game. He had been largely inactive during the week and had not warmed up adequately. MRI confirmed the tear and surgery followed.

This pattern repeats across sports and age groups. The external event — a twist, a landing — is often just the final trigger. The underlying vulnerability usually builds over weeks or months of inadequate conditioning.

How ACL Tears Happen: Mechanism and Early Signs

The ACL stabilizes forward translation and rotation of the tibia relative to the femur. Tears occur in specific movement contexts:

Typical mechanisms

• Non-contact deceleration and change of direction: planting a foot and pivoting.
• Landing from a jump with poor knee alignment or excessive valgus (knee caving inward).
• Direct collision or blow to the knee, less common in recreational play.

Common early signs

• A loud “pop” at the time of injury.
• Immediate, severe pain followed by rapid swelling (usually within hours).
• Instability or giving way when trying to stand or pivot.
• Reduced range of motion and difficulty bearing weight.

Any of these signs after a sporting incident should prompt medical assessment. Delaying evaluation can lead to secondary damage — meniscal tears or cartilage injury — which complicates treatment and long-term outcomes.

Hidden Weaknesses: What Really Sets Up an ACL Tear

The acute incident is usually not the whole story. Several modifiable factors predispose an individual to ACL rupture:

Muscle weakness and imbalance

• Weak quadriceps, hamstrings, glutes and calf muscles fail to absorb force efficiently. The hamstrings oppose anterior tibial translation; insufficient hamstring strength increases ACL load during deceleration and landing.
• Overdevelopment of one muscle group relative to its antagonist (e.g., strong quads vs weak hamstrings) distorts joint mechanics.

Poor neuromuscular control

• Timing of muscle activation matters. Athletes who do not recruit stabilizing muscles quickly during landing put the ligament under more stress.
• Movement patterns that allow knee valgus or poor hip control increase risk.

Fatigue

• Fatigue reduces proprioception and muscle responsiveness, increasing the chance of a risky movement late in a match.

Training bias

• Gym sessions focused on cardio or upper body without targeted lower-limb strength and balance training leave gaps in joint protection.

Sex-based differences

• Females have a higher incidence of non-contact ACL injuries than males in many sports. Multiple factors — anatomical, hormonal and neuromuscular — contribute. Prevention programs tailored to address these differences are effective.

Surface and equipment

• Hard courts, worn shoes and uneven fields all raise the risk of poor foot mechanics and injurious loading.

Understanding these hidden weaknesses makes prevention more than just “warm up.” It becomes a program of targeted strength, balance and movement retraining.

Evidence-Based Warm-Ups and Prevention Programs That Work

Large studies and meta-analyses show structured warm-up and neuromuscular training programs reduce ACL injury risk substantially. Two well-researched protocols offer practical templates:

FIFA 11+ (adaptable beyond soccer)

• A progressive 20-minute routine including running exercises, strength, plyometrics and balance. Studies find up to a 30–50% reduction in lower-limb injuries when performed consistently.

PEP Program (Prevent injury, Enhance Performance)

• Focuses on proper landing technique, strengthening hamstrings and glutes, and plyometrics. Demonstrated effectiveness in female athletes.

Key elements shared by effective programs

• Dynamic movement components to increase heart rate and body temperature.
• Plyometrics that emphasize soft, controlled landings and knee alignment.
• Strength training targeting hamstrings, glutes and core.
• Balance and single-leg work to improve proprioception.
• Technique coaching: instruction on how to cut, pivot and land safely.

Practical takeaway: a concise, well-designed warm-up performed at least twice a week and before matches makes a measurable difference. For recreational players, a shortened, focused version of FIFA 11+ or PEP, tailored to a 10–15 minute window, is both feasible and effective.

A Practical 10-Minute Pre-Match Routine

Players who skip warm-ups often cite time. A 10-minute sequence can reduce injury risk and prepare the body:

1. Light movement (2 minutes)

• Jogging or high-knees on the spot, 60–90 seconds.
• Lateral shuffles for 30 seconds.

2. Dynamic mobility (2 minutes)

• Walking lunges with torso rotation, 10 steps.
• Leg swings (front-to-back and side-to-side), 10 each leg.

3. Neuromuscular activation (3 minutes)

• Glute bridges with squeeze, 12–15 reps.
• Single-leg Romanian deadlift to balance touch, 8 reps each side (bodyweight).

4. Plyometric preparation (2 minutes)

• Drop jumps from a small step, focusing on soft landing and knees tracking over toes, 6–8 reps.
• Lateral bounds with controlled landing, 6–8 reps.

5. Sport-specific drills (1 minute)

• Short accelerating sprints and decelerations, 3–4 reps.
• Quick-change-of-direction cone drills for 30–45 seconds.

Perform these movements at controlled intensity, gradually increasing effort. The focus must be on correct mechanics, not speed.

Strength and Balance: A 12-Week Program to Lower ACL Risk

Prevention requires more than a warm-up. A structured 8–12 week program builds the resilience needed for weekend sport. Below is a sample progression intended for three sessions per week, scalable to fitness level. Consult a physiotherapist or coach if you have pre-existing knee pain.

Phase 1 (Weeks 1–4): Build foundation

• Frequency: 3x/week. Focus: technique and baseline strength.
• Exercises:
  • Bodyweight squats: 3 sets of 10–15.
  • Glute bridges: 3x12–15.
  • Hamstring curl (Swiss ball or standing band): 3x12.
  • Single-leg balance 30–45s each leg.
  • Plank holds 3x30s.

Phase 2 (Weeks 5–8): Add load and complexity

• Frequency: 3x/week. Focus: strength progression and dynamic balance.
• Exercises:
  • Goblet squats or split squats: 3x8–12.
  • Romanian deadlifts (light dumbbells): 3x8–12.
  • Bulgarian split squats: 3x8 each leg.
  • Single-leg deadlift with reach: 3x8 each side.
  • Lateral band walks: 3x15 steps.
  • Single-leg hop-to-stability: 3x6 each side.

Phase 3 (Weeks 9–12): Power and sport-specificity

• Frequency: 2–3x/week plus sport sessions.
• Exercises:
  • Weighted squats or trap-bar deadlifts: 3x6–8.
  • Plyometric bounds and drop jumps focusing on soft landing and knee alignment: 3x6–8.
  • Reactive cutting drills with cones and light resistance: 6–8 reps.
  • Single-leg hop tests and agility circuits.

Progression rules

• Prioritize movement quality; increase resistance only when form is consistent.
• Include at least one session per week focusing on single-leg strength and balance.
• Allow 48 hours between strength sessions for recovery.

Expected benefits

• Improved hamstring-to-quadriceps strength ratio.
• Reduced valgus collapse on landing.
• Better core stability and hip control.

Realistic adherence

• Recreational athletes should aim for at least two weekly sessions that include strength/balance work. Even modest improvements over 8–12 weeks translate to meaningful risk reduction.

Diagnosing an ACL Injury: What to Expect at the Clinic

If you suspect an ACL rupture, early assessment helps determine the course of action. Typical diagnostic pathway:

1. Clinical history and exam

• The clinician asks about the mechanism of injury and symptoms.
• Special tests: Lachman test, anterior drawer, and pivot shift assess laxity and instability.

2. Imaging

• X-rays rule out fractures.
• MRI is the gold standard to visualize ACL integrity, associated meniscal tears, bone bruises and cartilage damage.

3. Additional considerations

• Associated injuries (meniscus, collateral ligaments) affect management.
• Degree of instability, patient activity goals and age influence surgical decision-making.

Prompt referral reduces the risk of secondary meniscal damage caused by an unstable knee.

Treatment Options: Non-Operative and Surgical Pathways

Management follows two broad paths: conservative (non-operative) care and ACL reconstruction. The choice hinges on patient age, activity level, degree of instability and associated injuries.

Conservative management

• Often considered for older, less active individuals or those with partial tears and good knee stability.
• Focuses on progressive rehabilitation: swelling control, full range-of-motion restoration, strengthening, balance and proprioception training.
• Many return to low-demand activities without surgery, but persistent instability during pivoting sports often drives surgical referral.

Surgical reconstruction

• Recommended for patients who wish to return to pivoting and cutting sports, or those with recurrent instability.
• Procedure: arthroscopic ACL reconstruction using a graft to replace the torn ligament.
• Graft options:
  • Hamstring tendon autograft (semitendinosus ± gracilis): popular due to decreased anterior knee pain.
  • Bone–patellar tendon–bone (BPTB) autograft: strong fixation and traditional choice for high-demand athletes; can cause anterior knee pain.
  • Quadriceps tendon autograft: gaining popularity for its strength and lower donor-site morbidity.
  • Allograft (donor tissue): used selectively; younger athletes have higher failure rates with allografts.
• Fixation devices and arthroscopic techniques continue to evolve. Robotic assistance is prominent in joint replacement but plays a limited role in standard ACL reconstructions.

Timing of surgery

• Acute reconstruction within days is sometimes necessary for combined injuries, but many surgeons favor waiting 2–6 weeks until swelling and range of motion improve to reduce stiffness risk.
• Pre-operative rehabilitation (prehab) to regain motion and strength improves postoperative outcomes.

Risks and outcomes

• Graft failure, infection and stiffness are potential complications.
• Successful reconstruction and adherence to rehabilitation allow many patients to return to sport, although re-injury and long-term osteoarthritis risk remain concerns.

Rehabilitation: Phases, Milestones and Realistic Timelines

Rehab after ACL injury — whether non-operative management or following reconstruction — follows progressive phases with clear objectives. Patience and adherence are essential; rushing return to sport increases re-injury risk.

Typical rehab milestones Phase 1: Immediate post-injury / post-op (0–2 weeks)

• Goals: control swelling, achieve full passive extension, restore quadriceps activation.
• Interventions: icing, elevation, analgesia, early ROM exercises, quadriceps sets, heel slides.

Phase 2: Early strengthening and gait normalization (2–6 weeks)

• Goals: pain control, gait without crutches, 90–120° flexion.
• Interventions: closed kinetic chain exercises (mini-squats), hamstring strengthening, balance drills.

Phase 3: Strength development (6–12 weeks)

• Goals: improved muscle strength and endurance, controlled single-leg function.
• Interventions: progressive resistance training, single-leg squats, step-downs, low-level plyometrics.

Phase 4: Power and agility (3–6 months)

• Goals: restore power, plyometric ability, sport-specific movement.
• Interventions: rapid deceleration drills, change-of-direction tasks, heavier resisted lifts.

Phase 5: Return-to-sport readiness (6–9+ months)

• Goals: meet objective strength and functional criteria before full return.
• Tests: isokinetic or handheld dynamometry for quadriceps/hamstring strength (aim ≥90% limb symmetry), hop tests (single hop, triple hop), agility drills, psychological readiness assessments.
• Many surgeons and physiotherapists advise delaying full pivoting sport until at least 9 months post-op and some advocate 9–12 months to reduce re-tear risk.

Evidence-based benchmarks

• Strength symmetry (limb symmetry index) of at least 90% for quadriceps and hamstrings reduces re-injury risk.
• Passing a battery of functional tests (hop tests, quality of movement, fatigue-resistance) before unrestricted return is associated with better outcomes.

Realistic expectations

• Many athletes reach baseline strength and functional competence by 6–9 months, but full return to prior competition levels often takes 9–12 months.
• Psychological readiness matters; fear of re-injury can limit performance even after physical recovery.

Re-Injury and Long-Term Consequences: What Players Should Know

An ACL rupture does not only mean a few months off sport. Long-term implications deserve attention.

Re-injury risk

• Young athletes returning to cutting or pivoting sports face higher re-tear rates, especially if returning early or without meeting objective criteria.
• Risk factors for graft rupture include younger age, high activity level and inadequate rehabilitation.

Osteoarthritis

• ACL injury — even with reconstruction — increases the risk of developing knee osteoarthritis in the long term, particularly when meniscal or cartilage damage accompanies the tear.
• Maintaining strength, avoiding recurrent instability and protecting the joint during high-impact activities helps mitigate risk but does not eliminate it.

Functional limitations

• Some patients experience persistent weakness, reduced confidence in the knee and adjustments in activity choice.

Understanding these realities helps players make informed decisions about prevention, treatment and timelines for returning to sport.

Case Studies: How Preparation and Prevention Make a Difference

Case A: The unprepared volleyball player

• Scenario: In his 20s, a recreational volleyball player landed awkwardly after a spike, heard a pop, and developed rapid swelling. MRI showed a complete ACL tear and a small meniscal tear. He underwent arthroscopic reconstruction and faced nine months of rehabilitation.
• Analysis: Minimal pregame warm-up and poor lower-limb conditioning likely contributed. Prehab and targeted neuromuscular training might have reduced the risk.

Case B: The committed futsal team

• Scenario: A corporate futsal team implemented a weekly 15-minute warm-up routine, including dynamic mobility, single-leg balance and landing technique. Over a season, they reported fewer ankle and knee injuries and better on-field stability.
• Analysis: Consistent neuromuscular warm-up and targeted strengthening reduced cumulative risk across the team.

Case C: Returning runner with partial ACL tear

• Scenario: A recreational runner sustained a partial ACL tear. With a structured rehab program emphasizing hamstring strengthening and proprioception, she returned to running without instability and avoided surgery.
• Analysis: Non-operative management can work when stability is preserved and the athlete modifies activity demands.

These examples underscore the spectrum of outcomes and the central role of preparation in preventing severe injury.

Practical Recommendations for Players, Coaches and Organizers

Players

• Prioritize a 10–15 minute neuromuscular warm-up before each game or training session.
• Include two weekly strength sessions with emphasis on hamstrings, glutes and single-leg stability.
• Address movement technique: practice safe landing and cutting mechanics.
• Report feelings of instability and seek assessment early.

Coaches and captains

• Implement short, consistent warm-up routines for teams.
• Encourage strength and balance training as part of preseason and in-season conditioning.
• Monitor players for fatigue and rotate lineups to reduce late-game injury risk.

Organizers and facility managers

• Provide cushioning and well-maintained surfaces where possible.
• Support injury-prevention education sessions for community leagues.
• Ensure timely access to first aid and advice for acute injuries.

Public health actors

• Promote community-wide programs that combine physical activity promotion with injury-prevention education.
• Consider school and workplace initiatives that integrate lower-limb strength and movement skill development.

Diagnosis-to-Return Timeline: A Typical Pathway for an Active Person

Below is a typical pathway for an otherwise healthy recreational athlete with a complete ACL rupture who elects reconstruction:

Week 0–2: Acute management

• Assessment, MRI, swelling control, regain extension, quadriceps activation.

Weeks 3–6: Early rehab

• Full range of motion, gait normalization, low-load strengthening.

Weeks 6–12: Progressive strengthening

• Emphasis on single-leg control, increased resistance, low-level plyometrics.

Months 3–6: Power and agility

• Sport-specific drills, progressive plyometrics, early return to non-contact training around month 4–6.

Months 6–9+: Return-to-play decision

• Objective testing for strength and hop symmetry. Many patients resume full pivoting sports after 9–12 months when criteria are met.

This timeline varies by individual, surgical technique, and adherence to rehab.

Cost, Access and Local Considerations in Malaysia

Access to orthopedic care, imaging and rehabilitation varies across regions and socioeconomic groups. Key local considerations:

• Public hospitals provide essential services but may have longer wait times for MRI or elective surgery.
• Private centers offer faster access but incur higher out-of-pocket costs for imaging, surgery and supervised physiotherapy.
• Community-level preventive programs (e.g., workplace or school-based warm-ups) are cost-effective ways to reduce injury incidence.
• Tele-rehabilitation and guided home programs can extend access to structured rehab where physiotherapy resources are limited.

Players should weigh options and seek early assessment to reduce long-term costs associated with secondary injuries.

What the Evidence Says About Prevention Effectiveness

Systematic reviews and randomized trials support neuromuscular training for ACL prevention:

• Meta-analyses show structured neuromuscular and proprioceptive programs reduce overall ACL injury risk by 30–50%, with larger effects in younger athletes and female players when programs include plyometrics, strength and balance components.
• Consistency matters: programs performed at least twice weekly and continued through the season yield stronger protection.
• Education combined with hands-on coaching improves adherence and technique quality.

For recreational players, adopting core elements of proven protocols — consistent, progressive and technique-focused training — is the most practical and evidence-based approach.

How to Know When to See a Specialist

Seek immediate medical attention if:

• You felt a pop at the time of injury with rapid swelling.
• You cannot bear weight or your knee feels unstable.
• Symptoms persist beyond a few days despite rest and icing.
• There is deformity or obvious instability.

Primary care physicians, emergency departments and sports clinics can provide initial assessment and imaging referrals. Early specialist involvement is recommended when instability or associated injuries are suspected.

Simple Tests You Can Do at Home (Not a Substitute for Professional Care)

• Single-leg stance: stand on one leg for 30–60 seconds. Difficulty maintaining balance, wobbling or knee collapse suggests deficits that warrant formal assessment.
• Squat quality: perform a slow bodyweight squat. Does the knee track inward (valgus)? If so, focus on hip and glute strengthening and seek guidance on technique.
• Jump-landing check: jump off a small step and land. Note knee alignment and stiffness. Pain, instability or poor mechanics indicate need for professional evaluation.

These checks identify movement patterns that increase risk but do not diagnose ACL tears.

Common Myths and Misconceptions

Myth: ACL injuries are unavoidable in sport.

• Fact: While not all injuries can be prevented, evidence-based prevention reduces risk substantially, especially for non-contact events.

Myth: Only elite athletes need strength training.

• Fact: Recreational players benefit from the same principles. Tailored strength and neuromuscular training reduces injury risk and improves performance.

Myth: Surgery guarantees a return to previous performance.

• Fact: Surgery restores mechanical stability, but return to prior level depends on rehabilitation, strength symmetry, psychological readiness and avoidance of re-injury.

Myth: If pain goes away, the knee is fine.

• Fact: Pain may subside while instability persists. Objective assessment is necessary after suspected ACL injury.

Where to Start: A Practical Checklist for the Recreational Athlete

1. Adopt a short, consistent pre-match warm-up (10–15 minutes).
2. Add two weekly strength sessions focusing on hamstrings, glutes and single-leg work.
3. Learn safe landing and cutting techniques; get coaching feedback if possible.
4. Manage fatigue: limit back-to-back high-intensity sessions without recovery.
5. If injury occurs, seek prompt clinical assessment and imaging as advised.
6. Follow rehabilitation milestones rather than a calendar: base return-to-play on objective testing.

FAQ

Q: What exactly is the ACL and why is it important? A: The anterior cruciate ligament (ACL) connects the femur to the tibia, stabilizing the knee during forward movement of the tibia and rotational forces. It prevents excessive forward sliding of the tibia and controls rotational stability during cutting and landing.

Q: How common are ACL injuries among recreational athletes? A: ACL injuries have become more common among recreational players as community participation in high-intensity sports grows and many players lack specific conditioning. National data suggest a high proportion of adults do not perform enough regular physical activity, increasing vulnerability when they engage in sudden, intense exercise.

Q: Can ACL injuries be prevented? A: Many ACL injuries can be prevented or their risk reduced through regular neuromuscular training that includes strength, balance, plyometrics and technique work. A consistent 10–15 minute pre-match routine plus ongoing strength sessions yields meaningful risk reductions.

Q: If I tear my ACL, do I always need surgery? A: Not always. Non-operative rehabilitation can suffice for individuals with partial tears, older patients, or those who do not engage in pivoting sports. Surgery is often recommended for athletes who want to return to cutting, pivoting sports or for those with persistent instability.

Q: What are the main types of grafts used in ACL reconstruction? A: Common grafts include hamstring tendon autograft, bone–patellar tendon–bone autograft, quad tendon autograft, and allograft options. Choice depends on surgeon preference, patient activity level, and specific considerations like donor-site morbidity.

Q: How long is rehabilitation after ACL reconstruction? A: Rehabilitation is progressive. Many patients achieve basic functional milestones by 4–6 months, but full return to pivoting sports often takes 9–12 months, depending on meeting objective strength and functional criteria.

Q: What signs after an injury indicate I should seek immediate care? A: A loud pop at injury, immediate swelling, inability to bear weight, or feelings of instability warrant urgent clinical evaluation and imaging.

Q: Does ACL reconstruction prevent osteoarthritis? A: Reconstruction restores knee stability but does not completely eliminate the elevated long-term risk of osteoarthritis, especially when meniscal or cartilage damage is present. Preventing recurrent instability and maintaining strength helps reduce further joint deterioration.

Q: What can community teams do to reduce ACL injuries? A: Implement brief, structured warm-ups before play, schedule regular strength and conditioning sessions, coach safe movement patterns, rotate players to manage fatigue and facilitate access to physiotherapy resources when injuries occur.

Q: Are there programs I can copy for prevention? A: Yes. Programs like FIFA 11+ and PEP have robust evidence and can be adapted into shorter, practical routines for recreational settings. The key is consistent application and emphasis on correct technique.

Q: How can I safely return to sport after an ACL injury without surgery? A: Undergo supervised rehabilitation focusing on strength, neuromuscular control and sport-specific drills. Return to sport decisions should be based on objective functional tests and clinical stability rather than time alone.

Q: Where can I get more help in Malaysia? A: Seek evaluation at public or private hospitals with orthopedic and sports medicine services. Physiotherapists and sports injury clinics provide rehabilitation and return-to-sport programs. Community health promotions may offer group classes focused on injury prevention.

Weekend games and social sports are an excellent way to stay active. Preparing the body through a short, consistent warm-up and a modest program of strength and balance training makes that enjoyment more sustainable. Players who adopt these measures significantly reduce the odds of a weekend injury turning into months of recovery.