01Approach to the Critical Patient/attcp41

Immediate vascular assessment

›High-energy mechanism triggers

›Knee dislocation or multi-ligament injury

›18% incidence of popliteal artery injury

›25% incidence of peroneal nerve injury

›Absent or diminished distal pulses

›Emergent vascular surgery consultation

›CT angiography of popliteal and tibial vessels

›Ankle-brachial index measurement

›ABI < 0.9 warrants CT angiography

›ABI > 0.9 with normal exam may allow serial monitoring

Neurovascular monitoring

›Distal neurovascular targets

›Dorsalis pedis and posterior tibial pulses

›Compare bilaterally

›Doppler assessment if not palpable

›Peroneal nerve function

›Ankle dorsiflexion strength

›Eversion strength

›Sensation on dorsum of foot and lateral leg

›If foot drop or vascular compromise present

›Escalate to emergent orthopedic and vascular surgery

›Surgical exploration may be required without delay

Compartment syndrome recognition

›Compartment syndrome triggers

›Pain out of proportion to injury

›Pain with passive toe dorsiflexion

›Tense anterior or posterior compartment

02History/hx60

Mechanism of injury

›Classic injury mechanisms

›Dashboard injury in motor vehicle collision

›Direct blow to anterior proximal tibia with knee flexed

›Most common cause of isolated PCL tears

›Fall onto a flexed knee

›Plantarflexed foot increases PCL load

›Common in sports and pedestrian incidents

›Hyperextension injury

›Suggests combined ligamentous injury

›Higher energy than isolated mechanism

›Valgus or varus stress with rotation

›Suggests posterolateral corner or collateral involvement

Symptom characterization

›Pain pattern

›Posterior knee pain predominant

›Worse with stair descent or deceleration

›May be vague and underreported acutely

›Acute onset at time of injury

›Severity correlates with grade

›Grade I-II often less dramatic than ACL tear

›Swelling history

›Onset and progression

›Hemarthrosis suggests grade II-III or associated injury

›Immediate swelling vs delayed (hours to days)

›Severity of initial effusion

›Large tense effusion may require aspiration for comfort

›Instability symptoms

03Physical Exam/exam64

Ligamentous testing

›Posterior drawer test (primary test)

›Technique

›Knee flexed to 90 degrees, hip flexed to 45 degrees

›Examiner sits on patient's foot to stabilize

›Posterior directed force applied to proximal tibia

›Grading

›Grade I: 0-5 mm translation, tibial plateau remains anterior to femoral condyles

›Grade II: 5-10 mm, tibial plateau flush with femoral condyles

›Grade III: > 10 mm, tibial plateau posterior to femoral condyles

›Performance characteristics

›Sensitivity 90%, specificity 99% for PCL tear

›Posterior sag sign (Godfrey test)

›Technique

›Supine, hip and knee both at 90 degrees

›Observe loss of normal anterior tibial step-off

›Clinical significance

›Pathognomonic finding for PCL disruption

›Gravity-assisted posterior tibial displacement

›Must be recognized before performing posterior drawer

›Quadriceps active test

›Technique

›Knee at 90 degrees with posterior sag established

›Active quadriceps contraction reduces the sag

›Clinical significance

›Confirms PCL injury when positive

›Differentiates from posterolateral corner laxity

04Differential Diagnosis/ddx64

Ligamentous injuries

›Anterior cruciate ligament tear

›ICD-10: S83.511A (right), S83.512A (left)

›Differentiating features

›Positive Lachman test and anterior drawer

›Pivot-deceleration mechanism more common

›Pop heard at time of injury more frequent

›Combined multi-ligament knee injury

›ICD-10: S83.201A

›Differentiating features

›Instability in multiple planes

›Higher energy mechanism

›Most commonly associated: PLC (73%) and ACL (61%)

›Posterolateral corner injury

›ICD-10: S83.8X1A

›Differentiating features

›Dial test positive at 30 degrees only (isolated PLC)

›Varus recurvatum in severe cases

›Often coexists with PCL tear

Bony injuries

›Tibial plateau fracture

›ICD-10: S82.101A

›Differentiating features

›Bony tenderness over tibial plateau

›Visible on plain radiograph

›Unable to bear weight typically

›PCL avulsion fracture

›ICD-10: S83.001A

05Laboratory Tests/lt28

Pre-operative and trauma labs

›Hemostatic and pre-operative workup

›CBC for baseline hemoglobin and platelet count

›Indicated if surgical intervention anticipated

›Hemarthrosis with coagulopathy concern

›Basic metabolic panel

›Electrolytes and renal function pre-operative

›Glucose monitoring in diabetic patients

›Coagulation studies (PT, INR, aPTT)

›Indicated if anticoagulation history or coagulopathy suspected

›DVT prophylaxis planning in prolonged immobility

Vascular injury workup

›Lactate

›Elevated in limb ischemia from popliteal artery injury

›Serial measurement if vascular injury suspected

›Level > 2 mmol/l concerning for tissue ischemia

›Type and screen

›High-energy trauma with vascular compromise

›Polytrauma protocol activation if indicated

Synovial fluid analysis

›Arthrocentesis indications

›Large tense hemarthrosis causing significant pain

›Fat globules in aspirate suggest intra-articular fracture

›Send for cell count, crystals, culture if infection concern

›Infection suspected

›WBC > 50,000 with polymorphonuclear predominance suggests septic arthritis

›Gram stain and culture

06Diagnostic Tests/dt85

Scoring Systems

›PCL injury grading system (posterior drawer classification)

›Grade I (partial tear)

›0-5 mm posterior tibial translation

›Tibial plateau remains anterior to femoral condyles

›Partial disruption of PCL fibers

›Grade II (complete or near-complete tear)

›5-10 mm posterior translation

›Tibial plateau flush with femoral condyles

›May be partial or complete disruption

›Grade III (complete tear with gross instability)

›> 10 mm posterior translation

›Tibial plateau posterior to femoral condyles

›Often associated with posterolateral corner or multi-ligament injury

›KT-1000/KT-2000 arthrometer

›Objective quantification of posterior translation in millimeters

›Side-to-side difference > 3 mm considered significant

›Useful for surgical planning and outcomes measurement

›Stress radiography ≥ 8 mm suggests complete rupture

›Ottawa Knee Rules (for fracture exclusion)

›Radiograph indicated if any of:

›Age 55 years or older

›Isolated patella tenderness

›Tenderness at fibular head

›Inability to flex knee to 90 degrees

›Inability to bear weight (4 steps immediately and in ED)

›Sensitivity 97-99% for clinically significant fractures

›ACEP Level B recommendation for fracture exclusion

MRI

›MRI knee indications

›Standard of care for PCL injury evaluation

›Sensitivity > 95% for complete tears

›Specificity > 95% for complete tears

›Gold standard for associated injury assessment

›Findings in acute PCL tear

›Increased T2 signal intensity within ligament

›Fiber discontinuity or wavy appearance

›Ligament thickening or complete disruption

›Bone contusions at tibial plateau or femoral condyle

›Assessment of associated structures

›Meniscal tear evaluation (medial and lateral)

›Posterolateral corner integrity (LCL, popliteus, popliteofibular ligament)

›Collateral ligament status

›Chondral surface assessment

›Partial vs complete tear distinction

›Critical for management decision-making

›Location: femoral, midsubstance, or tibial insertion

›Tibial avulsion fracture may be visible on MRI as well

›MRI protocol specifics

›Proton density fat-saturated and T2-weighted sequences standard

›Sagittal plane: PCL fiber continuity assessment

›Coronal plane: collateral ligaments and posterolateral corner

›Axial plane: popliteus and posterior capsule

CT

›CT indications for PCL injury

›Plain radiograph inconclusive for fracture

›Tibial avulsion fracture characterization

›Fragment size and displacement assessment

›Surgical planning for ORIF

›CT angiography

›Vascular injury in knee dislocation

›Absent or diminished pulses post-injury

›ABI < 0.9 on ankle-brachial index

›Expanding popliteal hematoma

›CT angiography performance

›Sensitivity approaching 100% for popliteal artery injury

›Specificity approaching 100%

›Preferred over conventional angiography in acute setting

›Stress radiography (X-ray based)

›Posterior-directed force applied at 90 degrees flexion

›Posterior translation ≥ 8 mm on stress lateral suggests complete rupture

›Supine lateral radiograph at 90 degrees flexion has similar diagnostic accuracy as stress radiograph for chronic PCL injury

Ultrasound

›Ultrasound for PCL injury assessment

›PCL thickness as diagnostic marker

›Thickness ≥ 6.5 mm suggests PCL injury

›Sensitivity 90.6%, specificity 86.7% (Wang et al, 2017)

›Sonoelastography increases diagnostic accuracy

›Dynamic ultrasound assessment

›Real-time posterior tibial translation visualization

›Emerging modality for point-of-care evaluation

›Ultrasound for associated structures

›Popliteal artery Doppler assessment

›Baker's cyst identification

›Hemarthrosis quantification and guided aspiration

›Ultrasound limitations

›Operator dependent

›PCL deep and difficult to visualize fully

›MRI remains superior for complete assessment

07Disposition/dispo41

Discharge criteria

›Criteria for safe discharge

›Hemodynamically stable

›Normal bilateral distal pulses

›No neurovascular deficit

›Pain controlled with oral analgesics

›Able to demonstrate safe ambulation with crutches

›Knee immobilizer applied in full extension

›Prevents posterior tibial sag during healing

›Orthopedic or sports medicine follow-up arranged

›Within 7-14 days for MRI review and treatment planning

›Earlier if high-grade injury or diagnostic uncertainty

Admission indications

›Mandatory admission or operative planning

›Knee dislocation (any grade)

›Orthopedic emergency requiring immediate consultation

›Vascular assessment and monitoring in hospital

›Vascular compromise

›Popliteal artery injury requires operative intervention

›Revascularization window 6-8 hours for limb salvage

›Open joint injury

›Operative washout within 6 hours

›IV antibiotics (cefazolin 2 g IV) immediately

›Compartment syndrome

›Emergent fasciotomy

›Inadequate pain control

›IV opioid requirement or inability to mobilize safely

08Treatment/t94

Immediate ED management

›Initial acute management priorities

›Ice application

›Reduce swelling and pain acutely

›20 minutes on, 20 minutes off

›Limb elevation

›Reduce dependent edema

›Leg elevated above heart level

›Knee immobilization in extension

›Knee immobilizer or brace locked at 0 degrees

›Prevents gravity-assisted posterior tibial sag

›Worn for 2-4 weeks during healing phase

Analgesic management

›Pain management protocol

›NSAIDs (first-line for moderate pain)

›Ibuprofen 400-600 mg orally every 6-8 hours with food

›Naproxen 500 mg orally twice daily

›Avoid if surgical consultation within 48-72 hours (surgeon preference)

›Acetaminophen (adjunct or NSAID alternative)

›650-1000 mg orally every 6-8 hours

›Maximum 4 g per day (2 g per day in liver disease)

›Topical analgesia

›Diclofenac 1% gel applied 4 times daily to knee

›Lower systemic exposure than oral NSAIDs

›Short-course opioids (severe pain only)

›Oxycodone 5-10 mg orally every 4-6 hours as needed

›Limit to 3-5 days supply

›Avoid in multimodal strategy where possible

Hemarthrosis management

›Aspiration of tense hemarthrosis

›Indications

›Large tense effusion causing severe pain or limited ROM

›Diagnostic purpose (fat globules suggest fracture)

›Technique

›Superolateral or medial parapatellar approach under sterile technique

›Aspiration of blood-stained fluid

›Post-aspiration management

›Compression dressing application

›Knee immobilizer reapplication

Conservative (nonoperative) management

›Nonoperative protocol (majority of isolated PCL injuries)

›Phase 1: 0-2 weeks

›Knee locked in extension in brace

›Weight-bearing as tolerated with crutches

›Isometric quadriceps sets

›Straight leg raises

›Phase 2: 2-6 weeks

›Progressive weight-bearing to full

›Range of motion progress using prone passive flexion

›Avoid isolated hamstring exercises (increase posterior tibial translation)

›Aquatic therapy initiation if available

›Phase 3: 6-12 weeks

›Full weight-bearing without brace

›Progressive resistance quadriceps training

›Proprioceptive and balance training

›Stationary cycling

›Phase 4: 12+ weeks

›Interval running program

›Sport-specific agility drills

›Return to sport assessment

›Expected return to sport: mean 16 weeks (range 10-40 weeks) for isolated injuries

›91% of conservatively managed athletes return to same or higher sport level at 2 years

Surgical management

›Surgical indications

›Bony avulsion fracture

›Open reduction internal fixation

›Timing: within 2-4 weeks of injury

›Combined multi-ligament injuries

›PCL + ACL, PCL + PLC, or PCL + collateral

›Staged or combined reconstruction depending on swelling

›Grade III isolated PCL in high-demand athlete

›Failure of conservative management at 3 months

›> 10 mm residual laxity

›Chronic symptomatic PCL deficiency

›Progressive instability despite rehabilitation

›Secondary arthritis protection

›Surgical technique considerations

›Single-bundle vs double-bundle reconstruction

›Double-bundle more anatomic but technically demanding

›Optimal technique not yet established by consensus

›Transtibial vs tibial inlay technique

›Tibial inlay avoids "killer turn" angle on graft

›Both acceptable outcomes in literature

›Graft options

›Patellar tendon bone-tendon-bone autograft

›Hamstring tendon autograft

›Allograft for multi-ligament reconstructions

›Surgical outcomes

›Reconstruction results in less residual laxity (3.4 vs 5.5 mm)

›Lower rate of secondary osteoarthritis (21.5% vs 44.1% at follow-up)

DVT prophylaxis

›DVT prophylaxis in immobilized patients

›Low-molecular-weight heparin

›Enoxaparin 40 mg subcutaneously once daily

›Duration based on mobility status and risk

›Mechanical prophylaxis

›Sequential compression devices during immobility

›Compression stockings for ambulatory patients

›Risk assessment

›Higher risk: prolonged immobilization, obesity, prior DVT

09Special Populations/sp83

Pregnancy

›Anatomical and physiological considerations

›Ligamentous laxity increased in pregnancy

›Relaxin-mediated collagen remodeling

›May affect physical examination interpretation

›Contralateral comparison essential

›Falls and low-velocity trauma more common

›Gait changes and center of gravity shift in third trimester

›Isolated PCL injuries from falls on flexed knee possible

›Imaging in pregnancy

›MRI preferred over CT

›No ionizing radiation

›Safe at all gestational ages (no gadolinium for PCL assessment)

›Plain radiographs if fracture must be excluded

›Shield abdomen/pelvis

›Two views minimal; benefit outweighs minimal risk

›Pain management in pregnancy

›Acetaminophen 650-1000 mg orally every 6-8 hours

›Safest analgesic option throughout pregnancy

›NSAIDs contraindicated after 20 weeks

›Risk of premature ductus arteriosus closure

›Risk of oligohydramnios

›Opioids: short-course only with maternal-fetal medicine guidance

›Risk of neonatal opioid withdrawal syndrome

›Conservative management preferred

›Surgery deferred until postpartum unless vascular emergency

›Anesthetic risk to fetus

›Multi-ligament injury may require temporary stabilization brace

Geriatric

›Age-related considerations

›PCL injuries in elderly often lower energy

›Falls with knee flexion predominant mechanism

›Associated with osteopenia and fracture risk

›Higher risk of associated tibial plateau fracture

›Ottawa Knee Rules applicable regardless of age

›CT if X-ray inconclusive

›Pain management modifications

›NSAIDs with caution in elderly

›Increased GI, renal, and cardiovascular risk

›Use lowest effective dose for shortest duration

›Proton pump inhibitor gastroprotection if NSAIDs used

›Acetaminophen preferred

›650 mg every 6-8 hours (reduce to 2 g/day max if frail)

›Avoid opioids where possible

›Increased fall risk with sedation

›Urinary retention risk

›Cognitive effects in dementia

›Rehabilitation considerations

›Quadriceps weakness more pronounced in elderly

›Pre-existing sarcopenia impairs recovery

›Supervised physical therapy essential

›Weight-bearing with crutches may be unsafe

›Consider walker or rollator for stability

›Occupational therapy assessment for home safety

›Long-term outcomes

›Higher risk of accelerated medial compartment arthritis

›Existing osteoarthritis complicates management

›Total knee arthroplasty may be consideration in chronic cases

Pediatrics

›Skeletally immature patients

›Open physes alter injury pattern

›PCL avulsion fracture from tibial spine more common than midsubstance tear

›Tibial eminence avulsion equivalent of PCL tear in children

›MRI essential to characterize injury relative to growth plates

›Avoid treatment decisions based on clinical exam alone

›Plain radiographs for all pediatric knee injuries

›Ottawa Knee Rules validated in pediatric population (age 2-18)

›Management principles

›Avulsion fractures: early operative fixation preferred

›Arthroscopic or open reduction internal fixation

›Preserves epiphyseal vascularity

›Midsubstance PCL tears in adolescents

›Conservative management if skeletally immature

›Reconstruction deferred until physeal closure to avoid growth disturbance

›Temporary bracing and quadriceps rehabilitation

›Pain management in children

›Acetaminophen 15 mg/kg orally every 4-6 hours (max 75 mg/kg/day)

›Ibuprofen 10 mg/kg orally every 6-8 hours (max 40 mg/kg/day)

›Preferred pediatric NSAID

›Opioids only for severe pain under close monitoring

›Codeine contraindicated in children under 18 years

›Morphine 0.1 mg/kg IV for severe acute pain

›Sport and return to activity

›Return to contact sport deferred until physeal closure if reconstruction planned

›Temporary functional brace may allow modified activity

›Shared decision-making with patient, parents, and orthopedics

10Background/b85

Epidemiology

›Incidence and prevalence

›PCL injuries account for 3% of all knee ligament injuries in the general population

›Up to 37% of knee ligament injuries in emergency department settings

›Frequently missed on initial evaluation

›Most common cause: motor vehicle collisions (dashboard mechanism)

›Contact sports: football, soccer, rugby are major contributors

›Motorcycle and bicycle accidents

›Male predominance in sports-related injuries

›Peak incidence in second and third decades

›Associated injuries common

›Posterolateral corner injury in 73% of acute PCL tears

›ACL injury in 61% of acute PCL tears

›Multi-ligament knee injuries carry higher morbidity

›Long-term outcomes

›Chronic PCL deficiency leads to medial compartment and patellofemoral osteoarthritis

›Altered kinematics shift load to medial compartment

›Progressive articular cartilage degradation over years

›Functional outcome more dependent on quadriceps strength than residual laxity

›Strong quadriceps compensates for posterior instability

Pathophysiology

›Anatomy and biomechanics

›PCL is strongest ligament in the knee

›Approximately twice as strong as ACL

›Provides 95% of restraining force against posterior tibial displacement

›PCL anatomy

›Two functional bundles: anterolateral and posteromedial

›Anterolateral bundle: taut in flexion, primary restraint

›Posteromedial bundle: taut in extension, secondary restraint

›Biomechanical role

›Limits posterior tibial translation relative to femur

›Limits external tibial rotation in combination with posterolateral structures

›Guides coupled motion through arc of flexion

›Injury mechanism

›Direct blow to anterior proximal tibia with knee flexed

›Generates posterior shear force at tibiofemoral joint

›Dashboard injury: classic direct force mechanism

›Hyperextension injury

›Posterior capsule fails first, then PCL

›Often associated with anterior capsule injury

›Combined valgus/varus stress with rotation

›Involves collateral ligaments and posterolateral corner

›Injury classification

›Isolated PCL injury: single ligament involved

›Grades I-III based on posterior translation

›More favorable prognosis, usually managed conservatively

›Combined PCL injury: multiple structures involved

›PCL + PLC most common combination

›Higher grade instability, often surgical

›Acute vs chronic

›Acute: < 3 weeks, inflammatory phase, hemarthrosis possible

›Chronic: > 3 weeks, adaptive changes, secondary arthritis risk

›Healing biology

›PCL has moderate intrinsic healing capacity

›Rich vascular supply from middle geniculate artery

›Inferior to ACL healing due to synovial fluid inhibition

›Grade I-II tears: healing capacity sufficient for conservative management

›Grade III tears: often require surgical augmentation for stability

Therapeutic Considerations

›Conservative vs surgical decision framework

›Grade I-II isolated PCL injuries

›Conservative management is standard of care

›Quadriceps rehabilitation program central to recovery

›Favorable outcomes in majority of patients

›Grade III isolated PCL injuries

›Controversial: conservative vs surgical

›High-demand athletes may benefit from reconstruction

›International expert consensus (2025, 17 countries) favors surgery for grade III in athletes

›Combined PCL injuries

›Multi-ligament reconstruction generally recommended

›Staging may be required: acute ligament repair then delayed reconstruction

›Rehabilitation evidence base

›Quadriceps strengthening is the cornerstone of PCL rehabilitation

›Compensates for posterior tibial sag through active mechanism

›Closed kinetic chain exercises preferred in early phase

›Hamstring exercises contraindicated in early recovery

›Hamstring contraction increases posterior tibial translation

›Reintroduce at 6-12 weeks under physiotherapy guidance

›Prone passive flexion technique

›Gravity reduces posterior tibial sag in prone position

›Supine flexion allows gravity to increase posterior sag

›ICD-10 coding

›S83.521A: Sprain of posterior cruciate ligament of right knee, initial encounter

›S83.522A: Sprain of posterior cruciate ligament of left knee, initial encounter

›S83.529A: Sprain of posterior cruciate ligament, unspecified knee, initial encounter

›SNOMED CT

›444798002: Injury of posterior cruciate ligament

›Subcategory coding by severity and chronicity

11Patient Discharge Instructions/pdi42

copy discharge instructions

›Diagnosis and injury explanation

›You have a posterior cruciate ligament (PCL) tear in your knee

›The PCL is a major ligament inside the knee that stabilizes the shin bone

›Your injury has been graded based on physical examination and imaging

›Most PCL injuries heal well with conservative treatment

›Physiotherapy and quadriceps strengthening are the most important parts of recovery

›Home care instructions

›Apply ice to the knee for 20 minutes every 2 hours for the first 48-72 hours

›Wrap ice in a cloth to protect the skin

›Keep your leg elevated above heart level when resting

›Reduces swelling and pain

›Wear your knee brace or immobilizer as instructed

›Keep the knee straight in the brace unless instructed otherwise

›Use crutches to walk and bear weight as tolerated

›Do not put full weight on the leg without crutches initially

›Medications

›Take ibuprofen (400-600 mg) or naproxen (500 mg) with food as directed

›Do not exceed recommended doses

›Acetaminophen 500-1000 mg every 6-8 hours as needed for additional pain relief

›Do not take more than 4000 mg per day

›Take any prescribed medications as directed

›Activity restrictions

›No sports, running, or jumping until cleared by your orthopedic specialist

›Most isolated PCL injuries return to sport in 3-6 months

›Avoid isolated hamstring exercises during early recovery

›These increase strain on the healing ligament

›Begin gentle quadriceps exercises as instructed by your physiotherapist

12References/r28

Guidelines and key sources

›Harner CD, Hoher J. Evaluation and Treatment of Posterior Cruciate Ligament Injuries. American Journal of Sports Medicine. 1998. PMID: 9617416

›Foundational review of PCL evaluation and management principles

›Mechanism, diagnosis, grading, and treatment algorithm

›Bedi A, Musahl V, Cowan JB. Management of Posterior Cruciate Ligament Injuries: An Evidence-Based Review. Journal of the American Academy of Orthopaedic Surgeons. 2016. PMID: 27097125

›Evidence-based framework for conservative vs surgical decision-making

›Rehabilitation principles and outcomes data

›Badri A, Gonzalez-Lomas G, Jazrawi L. Clinical and Radiologic Evaluation of the Posterior Cruciate Ligament-Injured Knee. Current Reviews in Musculoskeletal Medicine. 2018. PMID: 29987531

›Physical examination maneuvers with sensitivity and specificity data

›Imaging modality comparison and grading systems

›Wang D, Graziano J, Williams RJ, Jones KJ. Nonoperative Treatment of PCL Injuries. Current Reviews in Musculoskeletal Medicine. 2018. PMID: 29721691

›Natural history of conservatively managed PCL tears

›91% return to sport at same or higher level at 2 years

›Gao S, Meng J, Zeng C, et al. Management of Posterior Cruciate Ligament Injuries: An Expert Consensus From 17 Countries. International Journal of Surgery. 2025. PMID: 40277372

›Most recent international expert consensus on PCL management

›Guidance on surgical indications for grade III injuries

›Wang LY, Yang TH, Huang YC, et al. Evaluating Posterior Cruciate Ligament Injury by Using Two-Dimensional Ultrasonography and Sonoelastography. Knee Surgery, Sports Traumatology, Arthroscopy. 2017. PMID: 27145775

›PCL thickness cutoff ≥ 6.5 mm with 90.6% sensitivity and 86.7% specificity

›Schroven W, Vles G, Verhaegen J, et al. Operative Management of Isolated PCL Injuries Improves Stability and Reduces Secondary Osteoarthritis. Knee Surgery, Sports Traumatology, Arthroscopy. 2022. PMID: 34505176

›Systematic review supporting surgical management outcomes

›Residual laxity 3.4 vs 5.5 mm; osteoarthritis 21.5% vs 44.1%

›Kew ME, Cavanaugh JT, Elnemer WG, Marx RG. Return to Play After Posterior Cruciate Ligament Injuries. Current Reviews in Musculoskeletal Medicine. 2022. PMID: 36447081

›Return to sport timeline and criteria

›Quadriceps strength as primary functional marker

›Knapik DM, Smith MV, Matava MJ, Brophy RH. Management of Posterior Cruciate Ligament Injury. Journal of the American Academy of Orthopaedic Surgeons. 2025. PMID: 41202194

›Current indications, techniques, and outcomes overview 2025

›Solomon DH, Simel DL, Bates DW, Katz JN, Schaffer JL. Does This Patient Have a Torn Meniscus or Ligament of the Knee? JAMA. 2001

›Rational clinical examination meta-analysis

Evidence & Review