UL MSK Pathologies Flashcards
Common Tendinopathy in UL
Rotator Cuff Related Pain Lateral Epicondylitis (Tennis elbow) Medial Epicondylitis (Golfer's elbow)
Define Rotator Cuff Shoulder Related Pain (RCRSP)
Most common tendinopathy of upper limb
Includes:
• Sub-acromial pain syndrome (Impingement) - bursitis
• Rotator Cuff Tendinopathy
• Rotator Cuff Tears - including long head biceps brachii tear
Pathogenesis of rotator cuff tendinopathy
Extrinsic factors:
- Mechanical irritation of contents of subacromial space compression between greater tubercle and upper part of glenoid causes superior slide of humeral head in glenoid
- Postural dysfunction - FHP, protracted shoulder girdle, kyphosis, scapula position; Leads to alteration of force couples operating around shoulder & faulty movements
- Muscle imbalances:
- Weak / fatigued / injured rotator cuff
- Results in loss of deltoid: RC force couple
- Allows superior migration of humeral head
- Leading to repetitive impingement of subacromial soft tissue
- Results in inflammation & rotator cuff disease
- Impingement of rotator cuff tendons secondary to G/H instability = Failure of static or dynamic stabilisers of GH joint allows excessive translation of HH
- Occupational / environmental / training: Anything that involves repetitive overhead manoeuvres eg. Tennis; painting ceiling; stacking shelves
Intrinsic Factors:
Degeneration of RC tendons
Deconditioned tendon - An under loaded tendon has no stimulus to build healthy tissue, will fail if suddenly over loaded
Joint side wear & tear
- Acromial side RC tendon fibres thicker & stronger
- Joint side fibres more vulnerable to tensile loads
- Lesions often found on joint side of tendon not acromial side
Risk factors of rotator cuff shoulder related pain
Age 35-75
H/O repetitive movements at or above shoulder height, or of heavy lifting
Athletes, workers who perform overhead activities and the elderly
Clinical presentation of rotator cuff shoulder related pain
Altered scapular movement therefore have changes in scapulohumeral rhythm
Pain in the top and lateral side of the shoulder which is made worse by lifting the arm (for example when lifting a full kettle) or with overhead activities
There can be night pain
Active movements are painful and may be restricted, whereas passive movements tend to be full but painful
May be a painful arc of movement between 70-120 degrees of abduction (presence reinforces the diagnosis of a rotator cuff disorder)
Weakness &/or pain on isometric resisted testing - joint does very little mvt
Management of RCSRP
○ Surgery vs Physiotherapy - some evidence suggests that they have similar outcomes
○ Physiotherapy includes:
Load modification - at first progression back to normal activities as soon as pain allows
Education - on pathology and on reducing aggravating activities
Pain relief - NSAIDs / Ice / joint mobs / SSTMs
Exercise:
Improve Strength and tissue capacity
Exercise in one direction at a time eg. ER
Restore full AROM & PROM
Isometrics (if irritable)> Isotonic
Start slow (this biases muscle, fast exs biases tendon)
Don’t exercise at EOR
Work into ER – this increases SAS & decreases pressure on RC tendons
Add other movements (e.g. LR with abd)
Progressive dynamic strengthening of RC
Maintain & improve neuromuscular control
Maintain muscle strength of all shoulder muscles
Define Lateral epicondylitis/epicondylalgia (tennis elbow)
Most common overuse syndrome in the elbow
Tendinopathy involving the extensor muscles of the forearm
Epicondylalgia because no symptoms of tendinopathy
Affects radial nerve as it passes through heads of supinator - neural symptoms
Prevalence of Tennis Elbow
- Affects 1-3% of the population
- Male=Female
- More common in 40s/50s
- ECRB tendon is the most commonly affected; ECRL tendon 2nd most affected; Other common tendons affected = ED, EDM, ECU, supinator
Causes of Tennis Elbow
Repetitive activity involving the extensor tendons of the forearm - musicians, computer users, manual workers, racquet sports (improper training, poor technique, improper equipment)
Risk factors of Tennis Elbow
Smoking
Obesity
Prognosis of Tennis Elbow
○ Most cases are self limiting (90% recover within a year)
○ Re-occurance rate = 8%
○ If do not recover or reoccurance occurs - increased risk of surgery required
Clinical Presentation of Tennis Elbow
○ Pain located around the lateral epicondyle of the elbow, usually radiating in line with the extensors
Insidious onset but often related to H/O overuse without specific trauma
Symptom onset 24-72h after repeated wrist extensor activity
○ Variable pain reported – intermittent / continuous, varying in severity
○ Typically aggravated by resisted wrist / finger extension, forearm supination; Middle finger causes secondary stress to ECRB - ECRB acts as a fixator on 3rd MC
○ Stretching the tendon can also reproduce symptoms, as can gripping - increases compression on common extensor tendon
Eases with rest
Differential diagnosis:
- Radiohumeral bursitis
- Osteochondritis of capitulum
- Posterior Interosseous Nerve (PIN) entrapment - In some cases the radial nerve may become involved as the radial nerve splits into the superficial radial nerve and the posterior interosseous nerve (PIN) at the radiocapitellar joint. Neurological deficit: weakness of posterior interosseous nerve innervated muscles (finger and thumb extensors and abductor pollicis longus)
- Radial tunnel syndrome - PIN may become trapped by pericapsular structures
- Diffuse aching pain over wrist extensor muscles, possibly radiating to the dorsal aspect of the hand, or sharp, shooting pain along the dorsal forearm region. Pain often worse at night
- Rarely, sensory or motor changes
- Pain may be increased by resisted supination, neurodynamic tests, and/or nerve palpation
- Cervical radiculopathy
- Radiation of pain from cervical spine, reproduced by palpation and/or active or passive movements of the cervical spine
- Focal motor, reflex, or sensory changes associated with the affected nerve
- Elbow and forearm overuse injuries
- Medial epicondylitis
Medical Management of Tennis Elbow
NSAIDs - i.e. ibuprofen, naproxen
Corticosteroid Injections
Shockwave Therapy
Surgery - severe cases
Physiotherapy Management of Tennis Elbow
Load Management - stop under/overuse
Exercise:
Stretching:
- Prayer stretch
- Wrist extensor stretch
- Thumb stretch
- Wrist flexion/extension
- Forearm pronation/supination
- Elbow flexion/extension
Wrist extension re-training:
Sensorimotor palm-slide exercise for retraining of wrist extension. With the forearm resting in pronation on a table, the wrist should be slowly extended by sliding the fingertips along the table and lifting the knuckles. Emphasis is placed on avoiding metacarpophalangeal extension and finger flexion. Return to the starting position and repeat 10 times
Strengthening:
Wrist extension exercise can be performed over the edge of a table with elastic tubing or free
weights.
Isometric holds (30-60 seconds in duration)
are advocated for reactive or irritable tendinopathy,
while concentric and eccentric actions should be
performed slowly (4 seconds for each direction),
completing 2 to 3 sets of 10 repetitions for patients
with less irritable or degenerative tendinopathy, only moving in non-painful ROM.
Emphasis is placed on maintaining neutral radialulnar deviation of the wrist (by aligning the middle
metacarpal bone with the long axis of the forearm).
Progression may be achieved by increasing load
or performing the exercises with greater elbow
extension
Wrist radial deviation exercises
Forearm pronation supination exercises
Exercises should also address motor
control impairments, such as dissociation of wrist from finger extension and retraining of wrist alignment during gripping
Brace / Taping - reduce symptoms allowing them to calm down
Education - what the problem is, reduction of aggravating activities
Define Medial Epicondylitis/epicondylalgia (golfers elbow)
Overuse tendinopathy, similar to tennis elbow but affecting the common origin of the flexors and pronators
Affects ulnar nerve passing through heads of FCU - neural symptoms
Prevalence of Golfer’s Elbow
- Prevalence 0.3-1.1%, Female > Male
- Significantly less common than LE (approx. 10% incidence in comparison)
- Age 40-60
- Associated with golf, manual workers
- Involves Pronator Teres and FCR
Prognosis of Golfer’s Elbow
60% recover w/ conservative treatment
Clinical Presentation of Golfer’s Elbow
○ Pain on the medial aspect of the elbow – tender on palpation
○ Aggravated by resisted / repetitive wrist flexion or pronation, valgus (ABD) stress, stretching tendons
○ Aggravated by throwing / gripping
○ Reduced grip strength
○ Can involve ulnar nerve (20%) - Dermatome of ulnar nerve = little finger, ring finger (excluding fingertip)
Medical management of Golfer’s Elbow
NSAIDs
Shockwave Therapy Corticosteroid injections
Surgery
Physiotherapy management of Golfer’s Elbow
Load management - gradual increase
Exercise - Strengthening exercises of wrist flexors and forearm pronators
Education
Taping / bracing - offload to reduce symptoms
Define De Quervain’s Tenosynovitis
Reactive thickening (inflammation) of the tendon sheath around EPB and APL
Prevalence of De Quervain’s Tenosynovitis
Tenosynovitis can be caused by unaccustomed movement, overuse or repetitive minor trauma of the thumb; May occur spontaneously (idiopathic)
The resulting synovial inflammation causes secondary thickening of the sheath and stenosis of the compartment, which further compromises the tendon.
The first dorsal compartment (APL & EPB) and the second dorsal compartment (ECRB) are most commonly affected.
The flexor tendons are affected far less frequently.
Overuse may involve eccentric lowering of the wrist into ulnar deviation with load, e.g.
- Lifting heavy dishes
- Painting
- Golf
- Hedge trimming
- Pruning
- Wringing activity
More common in women - 1.3% vs 0.5% (male)
More commonly reported in new mothers - the way they lift their babies involves eccentric ulnar deviation
Age most commonly 40s-50s
Pathology of De Quervain’s Tenosynovitis
The extensor retinaculum contains 6 compartments which transmit tendons lined with synovium
Inflammation of synovial sheaths of EPB & APL
Swelling of the sheaths and eventual thickening as swelling becomes organised
Adhesions may develop between tendon and sheath restricting normal tendon movement
Constriction of enclosed tendons = ‘stenosing tenosynovitis’
Clinical presentation of De Quervain’s Tenosynovitis
Pain on the radial side of the wrist that can be referred to the thumb
History of unaccustomed activity
Visible swelling over distal end of radius
Tendon sheath feels thick and hard
Tenderness most acute at tip of radial styloid
Weakness of grip
Aggravated by resisted thumb extension / abduction, or by stretching the affected tendons (Finkelstein Test)
Finkelstein’s Test
- Patient makes a closed fist with thumb tucked inside
- Passive ulnar deviation is performed maintaining the wrist in a neutral position
- Positive: reproduction of pain
- Negative: uncomfortable but not painful