Exam 1 (wk 1-3) Flashcards
(76 cards)
Collagen
Elastin
Tendon
Capsule
Ligament
colllagen: provides strength to structure
Elastin: provides structure with elasticity and has an ability to withstand stresses
Tendon: packed and parallel, 30% collagen, 68% water, connect msc to bone
Capsule: less parallel, loose weave of collagen
Ligament: connect bone to bone, they are 75% collagen ,dense and more organized than capsule, less parallel then tendon
Tendonitis, strain, sprain, tears, bursitis, contusions, dislocation, subluxation, fracture
tendonitis: minor lesions of tendon involving microscoping tear and low grade inflammation
strain: overstretching, overuse of soft tissue. less severe than sprain
sprain: severe stress of soft tissue
tears: rupture of soft tissue
bursitis: inflamation of bursa
contusions: brusing with bleeding in an area
dislocation: loss of anatomical relaitonship between bony surfaces
subluxation: partial dislocation
fracture: defect in continuity of bone
Inflammatory (acute phase)
- this phase lasts 4-6 days
- First 48 hours following trauma vascular changes predominate
- clot formation occurs
- phagocytosis and early fibroblastic activity
- Clinical signs: swelling ,redness, heat, pain at rest, loss of function
Profileration phase (subacute)
- repair and healing phase
- resolution of clot and repair begins
- this phase lasts 10-17 days (14-21 days after the onset of injury) lasting up to 6 weeks
- synthesis and deposition of collagen, granulation tissue develops, tremendous fibroblastic acitivity to produce new collagen
- would closure in msc and skin takes 5-8 days while ligaments 3-5 weeks
Clinical signs: decreased inflammation and pain at end range
Maturation (chronic) phase
- lasts 6 months to a year
- at 14 weeks scar tissue is unresponsive to remodeling
- maturation of CT and scar tissue
Clinical signs :no inflammation, ROM is pain free until tissue resistance, decreased ROM, strength and function, restoration of function begins
Chronic Inflammation, sx
- a state of prolonged inflammation
- sx lasts greater than several hours after activity
- increase stiffness after rest
- loss of ROM 24 hrs after activity
Chronic pain disorder: condition persists logner than 3-6 months typically for tissue healing post injury
Soft tissue healing times
- General soft tissue injury- 3 months
- ligamentous injuries- 3 mohts
- herniated disc- 3-6 months
Post surgical healing times
(shoulder + knee arthoscopy, knee arthotomy, knee ligament, ankle ligament repair, flexor tendon repair, extensor tendon repair, tendon release)
- Shoulder arthoscopy: 3 months
- Knee arthoscopy: 3-6 weeks
- Knee arthotomy: 3 months
- knee ligament: 3-6 months
- ankle ligament repiar: 3-6 months
- Flexor tendon repair: 3-6 months
- extensor tendon repair: 3 months
- Tendon release: 3 months
Ligament grade tears
Grade I tear: stretching or minor tearing of a few fibers without loss of integrity, minor swelling and discomfort, no minimal loss of strength and rom
Grade II Tear: partial tearing of tissue with clear loss of function, pain with point tenderness, swelling, moderlate loss of function, slight to moderate loss of ROM
Grade III Tear: Complete loss of structural and biomechanical integrity of the structure , marked swelling, usually requires surgery,
Immobilization effects on the soft tissue
- CT is compromised in strength, stiffness and deformability
- changes in colllagen fibers
- decreased elasticity, contracture development
- decreased msc mass/atropy
- articular cartilage degeneration
- decreased circulation
Bursa and treatment of bursitis
- Bursa is a dense irregular connective tissue
- fluid filled sac that facilitates gliding of mscs and tendons over bony/ligamentous areas
- reduces friction
treatment: treat inflammation! reduce loads
Open surgical procedures
- involves a larger incision of adequate length/depth through the skin, fascia, msc, and jt capsule
- have a longer rehab period
- exs are arthotomy (joint capsule is incised), joint replacement, arthodesis, IR fixation,
Arthoscopy
- involves several small incision in the skin, msc, and jt capsule
- arthoscope 4-5 mm in diameter
- 3 small incisions are made for the arthoscope, tools, and to provide fluid to the joint so it expands
- commony used for shoulder and knee
- quicker recovery and less invasive
- exs are ligament and tendon repairs, joint debridement,synovectomy
articular cartilage procedures
- repair is difficult
- procedures stimulate a bone marrow based response that leads to local ingrowth of fibrocartilage
- examples are abrasion arthoplasty and microfractures
Abrasion arthoplasty, microfracture of articular cartilage, chondrocyte transplation
Abrasion arthoplasty (type of articular cartilage procedure): mechanical disruption of articular surface through a motorized/arthoscopic drill
Microfracture of articular cartilage: repairs osteochondral defects less then 1.5cm, non motorized to penetrate subchondrla bone and expose bone marrow
chondrocyte transplation: stimulates growth of hyaline cartilage for repiar of articular cartilage: lesions are (2.5-4cm). 1st stage includes harvesting healthy cartilage via arthoscopy and extract chondrocytes and culture them for weeks, 2nd stage includes debride the defect side and inject millions of chondrocytes
Osteotomy def, reasons to perform, seen in what pop.
* Surgical cutting and realignment of bone
* Can be used to shift-weight bearing loads to intact joint surfaces (will reduce pain), delay jt replacements, correct deformities, correct severe leg length discrepancies
* most common in knees and hips for younger patients with dislocations and legg-calves perthes disease
Osteotomy post-op management
Immobilization: osteotomy site is imobilized with Internal fixation or joint is placed in a cast for 8-12 weeks.
Exs: AAROM, AROM, mild resistive exercises progresion. Joint mobs and stretching if there is chronic stiffness. If immobilizd in cast encourage pt to move jts above and below surgical site
Arthodesis(def, reason for procedure)
Arthodesis is the fusion of bony surfaces of joint w/internal fixation such as pins, nails, plates, or bone grafts
Reasons for procedure: Severe pain, arthritis, failed jt replacement
Optimum position for fusion of joints
Shoulder: hand needs to reach mouth
Elbow: dominant UE 70-90 deg of flexion, misposition of forearm sup/prone
Wrist: slight ext
Thumb: MCP joint 20 degrees flex
Hip: 10-15 deg of flex to allow for ambulation and sitting
knee: slight ext
Ankle: neutral
Spine: neutral
Arthoplasty def, reasons for it, how are implants held in place, is it invasive
any reconstructive jt procedure with or without joint implant
Reasons for surgery: severe pain and decreased function
- minimally invasive surgery because it uses smaller incisions, less msc splitting to expose jt, less capsule disruption when prepping for insertion of implants
total joint arthoplasty: removal of both articular jt surfaces and replacement with artificial jt.
* implants are held in place with cement or non-cemented fixation
Cemented vs non cemented fixation
Cemented: used for older adults, sedentary individuals, shorter rehab time, implants can loosen over time
Non-cemented: two types, its used for younger more active people
Bio-ingrowth: achieved by growth of bone into the porous coated exterior surfcae of the implant
Nonporous cementless fixation: uses a bioactive compound that stimulates bone growth, fixation is achieved by an interlock between the implant and adjacent bone
Synovectomy def, why is it used, tenosynovitis, tenosynovectomy, rehab
removal of synovial lining of the jt due to chronic jt inflammation
- Used when there is chronic inflammation for 4-6 months and other remedies have failed to allevaite the inflammation (severe RA and to prevent degration of a jt)
Tenosynovitis: synovium profilerates in the synovial sheaths of tendons
Tenosynovectomy: removal of excess synovium from tendon sheaths
Rehab: CPM, AAROM, gentle AROM, avoid excesssive exs/activity that could increase inflammation
Soft tissue release- tenotomy, myotomy, fasciotomy, rehab, why its used, seen in what pop
* Release of soft tissue to improve rom, relieve pain, and prevent deformity
- types of patients are younger patients with orthopedic or neurological disorders
- Rehab includes immobilizaiton, AAROM 3-4 days post op , agressive ROM and strenghten to antagonist of released muscle
Bone healing post fracture phases
Inflammatory phase: hematoma formation and cellular proliferation Week 1
Reparative phase: callous formation Week 2-3 soft callous, Week 4-16 hard callous
Remodeling phase consolidation and remodeling of bone Week 17 and beyond