Orthopedic Emergencies Compartment Syndrome Acute Joint Dislocation Saleh WaslAllah Alharbi...
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Orthopedic EmergenciesCompartment SyndromeAcute Joint Dislocation
Saleh WaslAllah AlharbiProfessor
KSU
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ObjectivesCompartment Syndrome (CS)
1. To explain the pathophysiology of CS.2. To identify patients at risk.3. To be able to diagnose and manage CS.4. To be able to describe the complications of
CS.
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CS
What is compartment?
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CS
What is compartment? , حيز, غرفة مقصورة
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CS
Normal blood flow is impaired.Artery- arteriole- capillary- venule- vein.Tissue perfusion failing.
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CS
Hypoxia
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CS
BP 120/80 + - 10Tissue pressure should be less than diastolic pressure by 30 mm Hg.
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CS
Definition:Compartment syndrome develops when there is excessive, sustained increase of local tissue pressure in a closed compartment.
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CS
• Risk Factors(edema)Elevated tissue pressureTense tissues Impaired diffusion / hypoxiaCell damageMore swelling , more hypoxiaVicious circle
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CS
• Local causes:- Trauma (crush, fracture open/closed)- Injection- Bleeding- Prolong vascular occlusion (reperfusion inj)- Burns- Venomous bite- IV extravasation- Post op- Bandages
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CS
• General causes:- Hypotension- Head injury
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CS
• Diagnosis- Early Pain out of proportion to injury Pain with stretching fingers / toes Risk factors High index of suspicion Measurement of compartment
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• Diagnosis• Late Numbness, parasthesia, weakness, Paralysis Pulseless Tooooo Late
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• Diagnosis- S/S Pallor Altered perfusion Diminished pulses or pulselessness Altered capillary refill Palpable fullness or tenseness of a
compartment, the forgotten "P" Altered sensibility Pain on passive muscle stretch
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CS
• Management- Initial ( undeveloped) CS Remove any bandages/ cast/ brace … Maintain normal BP Keep limb at heart level Regular close monitoring (15-30 min) Avoid sedation, nerve block ( pt feedback)
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CS
• Management- Fully developed CS Above pluse Diuretics to flush kidneys Urgent surgical decompression
(Fasciotomy)
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CS
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CS
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CS
• Fasciotomy Decompress all compartments Allows muscles to expand Thus, Reduction compartment pressure Stops further damage Should be done very early If too late, shouldn`t be done
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CS
• Fasciotomy Debridement of all necrotic tissue Second and third debridement needed Skin closure/graft after few days
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CS
• Fasciotomy Indications: 6 hours of ischemia significant tissue injury Worsening limb condition Developed clinical evidence of CS In doubt
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CS
• Complications:- Myonecrosis-----Myoglobinuria----kidney
tubular damage- Limb contractures/paralysis/sensation loss
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CS
• Complications:- Leg: Anterior compartment
(foot drop) Deep post compartment
(clawed toes/anesthesia sole)
Volar compartment(acute Volkman’s ischemia/contracture)
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CS
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Acute Joint DislocationAJD
• Objectives To describe mechanisms of joint stability To be able to diagnose AJD To know general principles of management To describe possible complications in major
joints (shoulder,hip,knee)
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AJD
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AJD
• Joint stability:- Bony stability Shape of bone ends (ball and socket/flat)- Soft tissues Dynamic stabilizers: Tendons/muscles Static Stabilizers:
ligaments/mensci/labrum
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Hinge joint
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Condylar
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Pivot
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Plane
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Saddle
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Ball and socket
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Stability
Complex synergy leading to FUNCTIONAL stability
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AJD
Higher energy is needed to dislocate a bony stable joint than a joint with mainly soft tissue stability.Example: Hip and Shoulder
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AJD
Dislocation of major joint is associated with other injuries.
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AJD
• Risk Major trauma victims Athletes Connective tissue disease patients
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AJD
When a joint is strained:it may sprainit may fractureit may dislocateit may fracture and dislocate
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AJD
Some joints dislocate in one or two directions depending on the force,,, (hip)Others may dislocate in different directions (shoulder)
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AJD
A joint dislocation is described in reference to the distal segment (shoulder dislocation)
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• Damage to the labrum Bankart’s lesion, and capsule.
• Damage to the head of humerus.
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Knee dislocation
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Knee dislocation
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S/S
History of traumaPain and pt is holding limbInability to use limbDeformity loss of contourShorteningMalalignmentMalrotationCheck NV status and CS
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Diagnosis
• History and physical exam• X ray urgent ( no delay) (special views)
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AJD
• Management principles:• Exclude other injuries• Pain control• Urgent reduction• Check stability• Check NV after reduction• Xray post reduction• Protect the joint• Rehabilitation• Look for late complications
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AJD
• Management:• Better with anesthesia. WHY• Urgent Closed reduction first• If fail open reduction
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AJD
• Complications
• Early• NV injury• CS• Fractures• Osteochondral lesion/fracture• Heterotopic calcification
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AJD
• Complications
• Late• Stiffness• Chronic instability• AVN/ avascular necrosis• Arthrosis
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AJD
• Special considrations:
• Hip joint• Post dislocation is commonest• Dashboard injury with hip flexed• Sciatic nerve injury common• Late AVN• An orthopedic emergency
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AJD
• Special consideration:
• Shoulder dislocation• Common• Anterior is more common• Pt with seizures prone to posterior dislocation• May cause chronic instability• Chances of axillary nerve injury
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AJD
• Special consideration:
• Knee dislocation• High energy trauma• Three ligaments or more• Popl artery injury (serious emergency)• Peroneal nerve injury• Fracture/CS• Require additional reconstructive surgery• Post reduction arteiogram
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