ch 62 musculoskeletal trauma & orthopedic surgey Flashcards
is a traumatic event resulting in fracture, dislocation, subluxation, and/or soft tissue injury
most common cause of musculoskeletal injury
urge them to wear nonskid, hard-soled footwear and assess their living environment for safety risks (e.g., remove throw rugs, ensure adequate lighting, maintain clear paths to the bathroom for nighttime use)
reduce risk for falls, for elderly by
sprains, strains, dislocations, and subluxations. They usually result from trauma.
Soft tissue injuries include
sprains and strains, growth plate injuries, and repetitive motion injuries
younger patients sport injuries include
abnormal stretching or twisting forces during vigorous activities. These injuries tend to occur around joints and in the spinal musculature.
Sprains and strains often result from
is an injury to the ligaments surrounding a joint.
sprain
a wrenching or twisting motion. Most occur in the ankle, wrist, and knee joints.
Sprains are usually caused by
. A first-degree (mild) sprain involves tears in only a few fibers, with mild tenderness and minimal swelling. A second-degree (moderate) sprain results in partial disruption of the involved tissue with more swelling and tenderness. A third-degree (severe) sprain is a complete tear of the ligament with moderate to severe swelling.
A sprain is classified according to the degree of ligament damage
s tears in only a few fibers, with mild tenderness and minimal swelling
A first-degree (mild) sprain involve
in partial disruption of the involved tissue with more swelling and tenderness.
second-degree (moderate) sprain results
is a complete tear of the ligament with moderate to severe swelling.
A third-degree (severe) sprain
is an excessive stretching of a muscle and its fascial sheath, often involving the tendon
strain
the lower back, calf, and hamstrings.
Most strains occur in the large muscle groups, including
first degree (mild or slightly pulled muscle), second degree (moderate or moderately torn muscle), and third degree (severely torn or ruptured muscle). A defect in the muscle may be apparent or palpated through the skin if the muscle is torn.
Strains are classified as
pain, edema, decreased function, and bruising. Continued use of the joint, tendon, or ligament makes pain worse.
Manifestations of sprains and strains are similar. They include
usually self-limiting. Full function generally returns within 3 to 6 weeks.
Mild sprains and strains are
in which the ligament pulls loose a fragment of bone. The joint structure may become unstable, causing subluxation or dislocation
-hemarthrosis (bleeding into a joint space or cavity) or disruption of the synovial lining may occur.
severe sprain can cause an avulsion fracture,
(1) stopping the activity and limiting movement to the injured part, (2) applying ice packs to the injured area, (3) compressing the involved area, (4) elevating the extremity, and (5) providing analgesia as needed
f an injury occurs, immediate care focuses on
decrease local inflammation and pain for most musculoskeletal injuries.
RICE (Rest, Ice, Compression, Elevation) may
cold therapy
(cryotherapy)
vasoconstriction in the soft tissue and reduces the transmission and perception of nerve pain impulses. These changes also reduce muscle spasms, inflammation, and edema. Cold is most useful when applied immediately after an injury has occurred and used for 24 to 28 hours. Apply ice no more than 20 to 30 minutes at a time. Do not apply ice directly to the skin.
Cold causes
edema and pain. We often use an elastic compression bandage.
Compression helps decrease
It can be wrapped around the injured part. To prevent edema and encourage fluid return, wrap the bandage starting distally (at the point farthest from the trunk of the body) and progress proximally (toward the trunk of the body).
elastic compression bandage
numbness or tingling below the area of compression or pain or more swelling occurs beyond the edge of the bandage. Leave the bandage in place for 30 minutes, then remove it for 15 minutes.
bandage is too tight if there is
circulation and helps resolve bruising and swelling.
Muscle contraction improves
is the complete displacement or separation of the articular surfaces of the joint.
Dislocation
is a partial or incomplete displacement of the joint surface.
Subluxation
around hip and shoulder sockets and the meniscus at the knee, play an important role in joint stability
Fibrocartilage structures, such as the labrum
forces on the joint that disrupt the surrounding soft tissue support structures.
Dislocations typically result from
the thumb, elbow, and shoulder.
The joints most often dislocated in the upper extremity include
anteriorly.
shoulder most often dislocates
are rare. They typically only happen after electrocution or seizure
Posterior shoulder dislocations
deformity.
most obvious sign of a dislocation is
local pain, tenderness, loss of function of the injured part, and swelling of soft tissues near the joint.
Other manifestations of dislocated joint include
open joint injuries, intraarticular fractures (within the joint), avascular necrosis (bone cell death from blood supply), and damage to adjacent nerves and blood vessels.
Major complications of a dislocated joint are
hemarthrosis or fat cells.
joint may be aspirated to assess for
a probable intraarticular fracture.
Fat cells in the aspirate indicate
an orthopedic emergency because it may be associated with significant vascular injury. The longer the joint is dislocated, the greater the risk for avascular necrosis.
dislocation requires prompt attention. It is often considered
avascular necrosis.
femoral head of the hip joint is especially susceptible to
to vascular injury and resulting ischemia
Compartment syndrome may occur after dislocation due
realign the dislocated part of the joint to its original anatomic position
first goal of management of a dislocation is to
(no incision)
Closed reduction
(joint visualized through surgical incision
open reduction
a brace, splint, or sling or by taping to allow torn ligaments and surrounding tissue to heal.
After reduction, the extremity is immobilized by
repeated dislocations because of damage or laxity to the previously mentioned structures
patient who has dislocated a joint may be at greater risk for
and cumulative trauma disorder are terms used to describe injuries resulting from prolonged force or repetitive movements and awkward postures
Repetitive strain injury (RSI)
repetitive trauma disorder, nontraumatic musculoskeletal injury, overuse syndrome (sports medicine), regional musculoskeletal disorder, and work-related musculoskeletal disorder.
RSI is also called
tendons, ligaments, and muscles, causing tiny tears that become inflamed.
Repeated movements strain the
musicians, dancers, butchers, grocery clerks, vibratory tool workers, and those who frequently use a computer mouse and keyboard.
-Competitive athletes and poorly trained athletes
Persons at risk for RSI include
poor posture and positioning, poor workspace ergonomics, badly designed workplace equipment (e.g., computer keyboard), and repetitive lifting of heavy objects without sufficient muscle rest. Inflammation, swelling, and pain in the muscles, tendons, and nerves of the neck, spine, shoulder, forearm, and hand may result.
swimming, overhead throwing (e.g., baseball), weight lifting, gymnastics, tennis, skiing, and kicking sports (e.g., soccer) require repetitive motion. Overtraining compounds the effects of RSI.
Other factors related to RSI include
pain, weakness, numbness, or impaired motor function.
Symptoms of RSI include
(the science that promotes efficiency and safety in the interaction of humans and their work environment).
ergonomics
compression of the median nerve, which enters the hand at the wrist through the narrow carpal tunnel
Carpal tunnel syndrome (CTS) is caused by
in the upper extremity.
CTS is the most common compression neuropathy
hobbies or work that require continuous wrist movement (e.g., musicians, carpenters, computer operators).
Carpal tunnel syndrome (CTS) associated with
by pressure from trauma or edema (due to inflammation of a tendon [tenosynovitis]), cancer, rheumatoid arthritis (RA), or soft tissue masses, such as ganglia. Hormones may be involved because CTS often occurs during the premenstrual period, pregnancy, and menopause
CTS is often caused
because of swelling that changes blood flow to the nerve and narrows the carpal tunnel
Persons with diabetes, peripheral vascular disease (PVD), and RA have a higher incidence of CTS
impaired sensation, pain, numbness, or weakness in the distribution of the median nerve
Numbness and tingling may awaken the patient at night. Shaking the hands often relieves these symptoms. Clumsiness in performing fine hand movements is common
-patient may have a positive Tinel’s sign and Phalen’s sign.
Manifestations of CTS are
can be elicited by tapping over the median nerve as it passes through the carpal tunnel in the wrist. A positive response is a sensation of tingling in the distribution of the median nerve over the hand.
Tinel’s sign (positive = CTS)
can be elicited by allowing the wrists to fall freely into maximum flexion and maintain the position for longer than 60 seconds. A positive response is a sensation of tingling in the distribution of the median nerve over the hand. In late stages, atrophy of the muscles around the base of the thumb results in recurrent pain and eventual dysfunction of the hand.
Phalen’s sign (positive = CTS)
6 months or if there is significant impairment to conduction on electromyography (EMG).
Carpal tunnel release is generally done if symptoms last more than
open release and endoscopic surgery
types of carpal tunnel release surgery include
an incision is made in the wrist and then the carpal ligament is cut to enlarge the carpal tunnel.
open release surgery,
1 or more small puncture incisions in the wrist and palm. A camera is attached to a tube, and the carpal ligament is cut. The endoscopic approach may allow a faster recovery and cause less discomfort than traditional open release surgery.
Endoscopic carpal tunnel release is performed through
the supraspinatus, infraspinatus, teres minor, and subscapularis muscles.
rotator cuff is made up of 4 muscles in the shoulder:
a gradual, degenerative process due to aging, repetitive stress (especially overhead arm motions), or injury to the shoulder.
tear in the rotator cuff may occur as
in swimming, weight lifting, and swinging a racquet (tennis, racquetball), often cause injury.
In sports, repetitive overhead motions, such as (rotator cuff )
adduction forces applied to the cuff while the arm is held in abduction. Other causes include (1) falling onto an outstretched arm and hand, (2) a blow to the upper arm, (3) heavy lifting, or (4) repetitive work motions.
rotator cuff can tear because of sudden
shoulder weakness, pain, and decreased ROM. The patient usually has severe pain when the arm is abducted between 60 and 120 degrees (the painful arc). A positive drop arm test is a sign of rotator cuff injury.
Manifestations rotator cuff include
In this test, the arm is abducted 90 degrees, and the patient is asked to slowly lower the arm to the side. If the arm falls suddenly, rotator cuff injury is suspected.
drop arm test (rotator cuff)
An x-ray alone is not helpful in the diagnosis. A tear can usually be confirmed by MRI.
diagnosis of rotator cuff
patient with a partial tear or cuff inflammation may be treated conservatively with rest, ice and heat, NSAIDs, corticosteroid injections into the subacromial space, ultrasound, and PT.
Tx for rotator cuff
(acromioplasty) to relieve compression of the rotator cuff during movement.
-shoulder immobilizer with an abduction pillow is typically used for 6 weeks after surgery to limit shoulder movement
If the tear is extensive, part of the acromion may be surgically removed
shoulder should not be immobilized for too long because “frozen” shoulder
arthrofibrosis ( “frozen” shoulder )
crescent-shaped pieces of fibrocartilage in the knee.
menisci are
the acromioclavicular (AC), sternoclavicular, and temporomandibular joints
Menisci are also found in other joints, including
ligament sprains common among athletes in sports such as basketball, football, soccer, and hockey.
-activities produce rotational stress when the knee is in varying degrees of flexion and the foot is planted or fixed
Meniscus injuries are associated with
shearing of the meniscus between the femoral condyles and tibial plateau, causing a torn meniscus
blow to the knee can cause
Older adults and people who have jobs that require squatting or kneeling are at
risk for degenerative tears
edema because most cartilage is avascular.
Meniscus injuries alone do not usually cause significant
localized tenderness, pain, and effusion . Pain occurs with flexion, internal rotation, and then extension of the knee (McMurray’s test). The patient may feel that the knee is unstable and often reports that the knee “clicks,” “pops,” “locks,” or “gives way.” Quadriceps atrophy is usually present if the injury has been present for some time.
acutely torn meniscus may present with (sign/symp)
repeated meniscus injury and chronic inflammation.
Traumatic arthritis may occur from
MRI can confirm the diagnosis before arthroscopy.
diagnose Meniscus injuries
patient’s age, occupation, sport activities, degree of knee pain, and dysfunction may affect the decision whether to have surgery.
surgery Meniscus injuries based on
ice application, immobilization, and use of crutches with weight bearing as tolerated. Using a knee brace or immobilizer during the first few days after the injury protects the knee and offers some pain relief.
Initial care involves for Meniscus injuries
, PT can help the patient regain knee flexion and muscle strength to aid in returning to full function. Teach athletes to do warm-up exercises to reduce the risk for sports-related injuries.
After acute pain has decreased of Meniscus injuries
progressive exercise therapy may improve neuromuscular function and muscle strength.8
In older adults with degenerative meniscus tears,
Surgical repair or excision of part of the meniscus
(meniscectomy)
Meniscal surgery is done by arthroscopy. Pain relief may include NSAIDs or other analgesics. Rehabilitation starts soon after surgery, including quadriceps and hamstring strengthening exercises and ROM. When the patient’s strength is back to its preinjury level, normal activities may be resumed.
Tx after surgery
anterior cruciate ligament (ACL)
most commonly injured knee ligament is the
noncontact injuries that occur when the athlete pivots, lands from a jump, or stops abruptly when running.
ACL injuries are usually
coming down on the knee, twisting, and hearing a pop, followed by acute knee pain and swelling
Patients often report ACL injuries as
a partial tear, a complete tear, or an avulsion (tearing away) from the bones that form the knee
Injury to the ACL can result in
A positive Lachman’s
test suggests an ACL tear
This test is done by flexing the knee 15 to 30 degrees and pulling the tibia forward while the femur is stabilized. The test is considered positive for an ACL tear if forward motion of the tibia occurs with the feeling of a soft or indistinct endpoint.
Lachman’s test process
MRI is often used to diagnose an ACL tear and coexisting conditions, including a fracture, meniscus tearing, and collateral ligament injuries.
diagnose an ACL tear by
rest, ice, NSAIDs, elevation, and ambulation as tolerated with crutches. If present, a tight, painful effusion may be aspirated. A knee immobilizer or hinged knee brace may provide support. PT often helps the patient maintain knee joint motion and muscle tone.
Conservative treatment for an intact ACL injury includes
physically active patients who have sustained severe injury to the ACL and meniscus.
Reconstructive surgery is usually recommended for
removed and replaced with graft tissue.
- prior level of physical functioning may take 6 to 8 months.
In reconstruction, the torn ACL tissue is
are closed sacs that are lined with synovial membrane and contain a small amount of synovial fluid
Bursae are
found at sites of friction, such as between tendons and bones and near the joints
Bursae found
(inflammation of the bursa) results from repeated or excessive trauma or friction, gout, RA, or infection.
Bursitis
warmth, pain, swelling, and limited ROM in the affected part.
Symptoms of bursitis include
the hands, elbows, shoulders, knees, and greater trochanters of the hip.
Common sites of bursitis are
Improper body mechanics, repetitive kneeling (carpet layers, coal miners, and gardeners), jogging in worn-out shoes, and prolonged sitting with crossed legs are
common precipitating activities.leading to Bursitis
Rest is often the only treatment needed.
only treatment needed for Bursitis
immobilized in a compression dressing or splint. Ice and NSAIDs can reduce pain and inflammation.9 Aspiration of the bursal fluid and intraarticular corticosteroid injection may be needed.
affected part may be (Tx or Bursitis/ implementation)
If the bursal wall has become thickened and continues to interfere with normal joint function,
surgical excision (bursectomy) may be done if
oral antibiotics, but usually need surgical incision and drainage
Septic bursae may be treated with
is a disruption or break in the continuity of bone
fracture
a disease process, such as cancer or osteoporosis (pathologic fracture).
Although traumatic injuries cause most fractures, some fractures are due to
open or closed based on communication with the external environment
Fractures are described as
the skin is broken and bone exposed, causing soft tissue injury.
open fracture
, the skin is intact over the site.
closed fracture
complete or incomplete
fractures also described as
he break goes completely through the bone.
fracture is complete if t
occurs partly across a bone shaft, but the bone is still intact.
-result of bending or crushing forces applied to a bone.
incomplete fracture
the direction of the fracture line.
Fractures are identified according to
linear, oblique, transverse, longitudinal, and spiral fractures
Types fractures based on direction of fracture line include
displaced or nondisplaced
fractures can be classified as
, the 2 ends of the broken bone are separated from each other and out of their normal positions.
displaced fracture
comminuted (more than 2 fragments) or oblique
Displaced fractures are often (ex of types)
the bone fragments stay in alignment
nondisplaced fracture,
transverse, spiral, or greenstick
Nondisplaced fractures are usually (ex of types)
occurs in normal or abnormal bone that is subject to repeated stress, such as from jogging or running.
Stress fracture:
a spontaneous fracture at the site of a diseased bone
Pathologic fracture:
immediate localized pain, decreased function, and inability to bear weight or use the affected part. The patient guards and protects the extremity against movement. Obvious bone deformity may be present.
Manifestations fracture include
- Fracture hematoma
- Granulation tissue
- Callus formation
4.Ossification
5.Consolidation - Remodeling
Bone goes through a complex multistage healing process (union) that occurs in 6 stages:
When a fracture occurs, bleeding creates a hematoma that surrounds the ends of the bone fragments. The hematoma is composed of extravasated blood that changes from a liquid to a semisolid clot in the first 72 hours after injury
Fracture hematoma: (1st step in healing fracture)
During this stage, active phagocytosis absorbs the products of local necrosis. The hematoma converts to granulation tissue. Granulation tissue (consisting of new blood vessels, fibroblasts, and osteoblasts) forms the basis for new bone substance (osteoid) during days 3 to 14 after injury.
Granulation tissue:(2nd step in healing fracture)
As minerals (calcium, phosphorus, and magnesium) and new bone matrix are deposited in the osteoid, an unorganized network of bone is formed and woven about the fracture parts. Callus is primarily composed of cartilage, osteoblasts, calcium, and phosphorus. It usually appears by the end of the second week after injury. An x-ray can show evidence of callus formation.
Callus formation ( 3rd step in healing fracture)
Ossification of the callus occurs from 3 weeks to 6 months after the fracture and continues until the fracture has healed. Callus ossification is sufficient to prevent movement at the fracture site when the bones are gently stressed. However, the fracture is still evident on x-ray. During this stage of clinical union, the patient may be allowed limited mobility, or the cast may be removed.
Ossification ( 4th step in healing fracture)
As callus continues to develop, the distance between bone fragments decreases and eventually closes. Ossification continues and can be equated with radiologic union, which occurs when an x-ray shows complete bony union. This phase can occur up to 1 year after injury.
Consolidation (5th step in healing fracture)
Excess bone tissue is resorbed in the last stage of bone healing, and union is complete. Gradual return of the injured bone to its preinjury structural strength and shape occurs. Bone remodels in response to physical loading stress (Wolff’s law). Initially, stress is provided through exercise. Weight bearing is gradually introduced. New bone is deposited in sites subjected to stress and resorbed at areas of little stress.
Remodeling (6th step in healing fracture)
granulation tissue.
hematoma converts to
new blood vessels, fibroblasts, and osteoblasts
Granulation tissue consists of
forms the basis for new bone substance
osteoid
is primarily composed of cartilage, osteoblasts, calcium, and phosphorus
Callus
air usually fills the small airways in lungs is replaced with something else. it can be either; fluid, pus, blood or water, a solid such as stomach contents or cells
lung consolidation
new bone is built up as osteoclasts destroy dead bone
Callus formation
Fracture heals in abnormal position in relation to midline of structure (type of malunion).
Angulation (complication of fracture healing)
Fracture healing progresses more slowly than expected. Healing eventually occurs.
Delayed union (complication of fracture healing)
Fracture heals in expected time but in unsatisfactory position. May cause deformity or dysfunction.
Malunion (complication of fracture healing)
Deposition of calcium in muscle tissue at site of significant blunt muscle trauma or repeated muscle injury.
Myositis ossificans (complication of fracture healing)
Fracture does not heal despite treatment. No x-ray evidence of callus formation.
Nonunion (complication of fracture healing)
Type of nonunion occurring at fracture site in which a false joint is formed with abnormal movement at site.
Pseudoarthrosis (complication of fracture healing)
New fracture occurs at original fracture site.
Refracture
displacement and site of the fracture, blood supply, other local tissue injury, immobilization, and use of internal fixation devices (e.g., screws, pins)
Many factors influence the time needed for complete fracture healing. They include
inadequate immobilization, excessive movement of fracture fragments, infection, poor nutrition, and systemic disease (e.g., diabetes)
Ossification may be slowed or even stopped by
Fracture healing may not occur in the expected time (delayed union) or may not occur at all (nonunion).
Smoking increases fracture healing time. by
(1) anatomic realignment of bone fragments through reduction, (2) immobilization to maintain realignment, and (3) restoration of normal or near-normal function of the injured part.
overall goals of fracture treatment are
- Manual traction
- Closed reduction
- Skeletal traction
- Open reduction
Management
Fracture Reduction (Realignment)
- Casting or splinting
- Skeletal traction
- External fixation
- Internal fixation
Fracture Immobilization
- Surgical debridement and irrigation
- Tetanus and diphtheria immunization
- Prophylactic antibiotic therapy
Open Fractures
is the nonsurgical, manual realignment of bone fragments to their anatomic position.
-Traction and countertraction are manually applied to the bone fragments to restore position, length, and alignment.
Closed reduction
the patient is under local or general anesthesia
Closed reduction is usually done while
Traction, casting, splints, or orthoses (braces) may be
used after reduction to maintain alignment and immobilize the injured part until healing occurs. (closed reduction)
is the correction of bone alignment through a surgical incision.
Open reduction
internal fixation of the fracture with wires, screws, pins, plates, intramedullary rods, or nails
Open reduction usually includes
type and location of the fracture, patient age, and concurrent disease
influence the decision to use open reduction
are infection, complications associated with anesthesia, and effects of preexisting medical conditions (e.g., diabetes)
-facilitates early ambulation, thus decreasing the risk for complications related to prolonged immobility
main risks of open reduction
is the application of a pulling force to an injured or diseased body part or extremity.
Traction
(1) prevent or reduce pain and muscle spasm (e.g., whiplash, unrepaired hip fracture), (2) immobilize a joint or part of the body, (3) reduce a fracture or dislocation, and (4) treat a pathologic joint condition (e.g., tumor, infection).
Traction is used to
(1) provide immobilization to prevent soft tissue damage, (2) promote active and passive exercise, (3) expand a joint space during arthroscopic procedures, and (4) expand a joint space before major joint reconstruction.
Traction is also used to
apply a pulling force on a fractured extremity to attain realignment while countertraction pulls in the opposite direction
Traction devices (work by)
pulls in the opposite direction. in a traction
countertraction
skin traction and skeletal traction
The most common types of traction are
short-term treatment (48 to 72 hours) until skeletal traction or surgery is possible.
Skin traction is generally used for
to help decrease muscle spasms in the injured extremity
Tape, boots, or splints are applied directly to the skin, mainly
is a type of skin traction sometimes used for the patient with a hip, knee, or femur fracture
Buck’s traction
heavier weights applied intermittently
Pelvic or cervical skin traction may require
fractures of the femur, hip, and lower leg.
Balanced suspension skeletal traction. Most often used for
align injured bones and joints or to treat joint contractures and congenital hip dysplasia
Skeletal traction is used to
a long-term pull that keeps the injured bones and joints aligned
Skeletal traction provides
a pin or wire into the bone, and weights are attached to align and immobilize the injured body part
To apply skeletal traction, the HCP inserts
infection at the pin insertion site and the effects of prolonged immobility.
major complications of skeletal traction are
balanced suspension traction
common type of skeletal traction is
the correct positioning and alignment of the patient while the traction forces stay constant.
Fracture alignment skeletal traction depends on
is supplied by the patient’s body weight or by weights pulling in the opposite direction.
-Elevating the end of the bed can help
Countertraction