Hip Flashcards

1
Q

CAM deformity

A

Presence of excessive bone in the femoral head-neck region

An excessive (>60°) alpha angle

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2
Q

EMG studies have concluded that what exercise in weight bearing that produces significant gluteus medius muscle activity?

A

SL squat

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3
Q

Only direct muscular attachment to the sacrum

A

Piriformis

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4
Q

What 2 ligaments form the walls of the greater and lesser sciatic foramina

A

Sacrotuberous and sacrospinous ligaments

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5
Q

The amount of hip ROM is determined primarily by what?

A

Depth of the acetabulum and capsuloligamentous restraints

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6
Q

T/F: the entire femoral head is covered in hyaline cartilage?

A

False, all but the fovea (attachment of ligamentum teres)

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7
Q

Does the hip cartilage have vascular or neural supply?

A

It is limited with vascularity and aneural

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8
Q

Can pain in the hip be a result of cartilage involvement?

A

No, it’s aneural

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9
Q

Name of ligament connecting femur to acetabulum and location of attachment on femur

A

Ligamentum teres, fovea

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10
Q

Normal angle of inclination of the femoral neck/head

A

120°-125°

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11
Q

Coxa vara
- angle
- presentation

A

Angle of inclination <120°

Developmental or acquired

LLD, limping gait pattern, functional hip abd muscle weakness

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12
Q

Coxa valga
- angle
- presentation

A

Angle of inclination >135°

Compromised jt congruency = instability

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13
Q

Hip version (torsion) angle

A

Normal 8-20°

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14
Q

Anteversion of the hip
- high/low version angle
- in/out toeing
- Excessive ROM/limited ROM

A

High angle (>20°), In-toeing, excessive IR, limited ER

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15
Q

Retroversion of the hip
- high/low version angle
- in/out toeing
- Excessive ROM/limited ROM

A

Low version angle, out toeing, excessive ER, limited IR

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16
Q

What part of the proximal femur is most susceptible to fx?

A

Inferior area of the femoral neck (no trabuculae bone in that region)

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17
Q

Pincer FAI

A

Acetabulum has too much bone laterally (aka “over-coverage”)

Measured by LCEA (>40°)

Commonly associated with a retroverted acetabulum

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18
Q

Imaging of choice for diagnosis/assessment of acetabular angles (all)

A

CT

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19
Q

What region is cartilage the thickest in the acetabulum?

A

Superiorly (corresponding with weight bearing function)

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20
Q

What is located at the central acetabular fossa?

A

Fat pad, no cartilage

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21
Q

Are hip labral tears associated with degenerative changes

A

May be a precursor to cartilage damage due to not being able to distribute forces widely (happens in small area)

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22
Q

3 primary extra-articular ligaments

A

1) Iliofemoral
2) Pubofemoral
3) Ishiofemoral

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23
Q

What region of the hip is the capsule the thinnest

A

Posterior/inferior

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24
Q

Iliofemoral ligament limits what motion?

A

Extension, ER, add (superior band), abd (inf band)

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25
Pubofemoral ligament limits what motion?
Abduction, secondary extension
26
Ishiofemoral ligament limits what motion?
IR, ext
27
Relevance of ligamentum teres in pediatrics
Thought to provide blood supply early on and decrease into adulthood
28
T/F: ligamentum teres plays a role in stability at the hip
Possibly, studies suggest it may help
29
Primary flexors of the hip
Iliopsoas and rectus femoris
30
Secondary flexors of the hip
Sartorius, TFL, pectineus, adductor longus
31
Young athlete, kicking sport, anterior hip pain should be screened for what?
Proximal rectus femoris apophyseal avulsion
32
Primary extensors of the hip
Gluteus max, HS
33
Secondary extensors of the hip
Glute Med, adductor magnus
34
T/F: the glute max also helps with hip abd and ER
True
35
Primary hip abductors
Glute med, glute min
36
Secondary hip abductors
TFL, glute max, piriformis, sartorius All depends on position of the hip
37
Primary hip adductors
Adductor complex (add brevis, add longus, add magnus), pectineus, gracilis
38
T/F: there are no primary hip internal rotators
True, IR is not the primary function of any muscle in the hip region
39
3 clinically relevant bursae in the hip/pelvic region
1) Greater trochanter bursa 2) Iliopsoas bursa 3) Ischial bursa
40
Borders of the femoral triangle (anterior hip)
Upsidedown triagle shape: Top = inguinal lig. Lat = sartorius Med = Add longus Floor = iliopsoas and pectineus
41
What is the primary arterial supply for the leg
Femoral artery
42
Relevance of the femoral medial and lateral circumflex arteries
Branch off femoral artery, supply innervation to femoral head, if compromised causes AVN
43
Femoral nerve has what root levels
L2-L4
44
Vascular supply of the posterior hip
Branches of the internal iliac artery
45
Glute max and glute med/min/TFL are innervated by which gluteal nerves
Glute max = inferior gluteal Glute med/min/TFL = superior gluteal
46
Loose packed position of the hip
30° flexion, 30° abduction, slight ER
47
Position for hip maximal articular congruency
90° hip flexion, slight abd and ER (quadruped) However, position where jt dislocation is most common
48
Trendelenburg sign = drop ___ cm's
>2cm
49
Corticosteroid use can lead to what 2 conditions in the hip
AVN and fractures
50
Fluoroquinolone antibiotics can cause what condition at the hip
Gluteal tendinopathy So if you have a pt with tendonitis and no MOI or other cause, screen for antibiotics
51
Slipped capital femoral epiphysis - What is it - Age range - Sex - Risk factor - Unilat vs bilat
Growth plate is damaged and the femoral head moves (“slips”) 8-15 y/o, males, increased risk with obesity, bilat is common If stable = non-surgical If unstable = surgery
52
Legg-Calve-Perthes disease - What is it - Age range - Sex
Disrupted blood supply to femoral head is temporarily interrupted = transient necrosis of the bone and deformities 4-10 y/o, boys Self-limiting, non-surgical most of the time unless severe
53
Coxa saltans
aka Snapping hip syndrome Iliopsoas over femoral head or proximal iliotibial tract over the greater trochanter
54
"C" sign typically indicates
Hip pain, impingement
55
Clinical prediction rule for inflammatory back pain - AS (can be hip as well)
1) Age <40 y/o @onset 2) Insidious onset 3) Better w/ exercise 4) No improvement w/ rest 5) Pain during 2nd half of night that improves w/ walking
56
How to differentiate between infection of the hip and gout
Typically will have big toe pain with gout
57
Reiter syndrome
aka Reactive arthritis Type of arthritis that occurs due to an infection Think: Can't see, can't pee, can't climb a tree
58
Symptoms of hip fx
Extreme pain, extreme difficulty WB/flexing and rotating hip/ambulating
59
AVN
30-50 y/o Atraumatic Very commonly had corticosteroid use Pain >6wks No ROM deficits early, but can mimic OA late - D/T loss of blood supply
60
2 risk factors for stress fractures in endurance athletes
Female, previous stress fx
61
Female athlete triad
Low energy availability, menstrual dysfunction, low bone mineral density Can put them at higher risk for stress fx's
62
Compression-sided femoral neck stress fractures (FNSF)
Inferior-medial neck, LOW risk, non-surgical
63
Tension-sided femoral neck stress fractures (FNSF)
Superior-lateral neck, HIGH risk
64
Pubic rami stress fx
LOW risk, non-surgical, pain at inguinal/perineal regions
65
Symptoms of stress fx
Gradual onset, worse w/ activity and better w/ rest, pain at end-range PROM (specifically IR)
66
Patellar pubic percussion test
Stethoscope over pubic tubercle, tap on ipsilat patella + = lack of/diminished sound, pain Good for femur fx's, but unknown for stress fx's
67
Gold standard for diagnosis of stress fx's
MRI
68
Common Lumbopelvic screening tests
Prone instability test, thigh thrust, prone knee flexion test, lumbar ROM (single and repeated), neural tension tests, SIJ provocative tests
69
Are the SI joint cluster findings good at ruling in (specificity) or ruling out (sensitivity) SIJ pain?
Ruling OUT = 94% for 3/5 positive tests
70
To rule out pelvic involvement in hip pain what is the best outcome measure?
PGQ
71
Tests to assess lumbopelvic stability: - Sagittal plane - Frontal plane - Rotational stability
Sagittal: Front plank Frontal: Side-plank Rotation: SL bridge
72
MMT for glute med vs min
Sidelying for both - Glute min is in neutral (flex/ext/rotation) - Glute med is slight ext and ER
73
Tests for anterior microinstability of hip joint
1) AB-HEER 2) HEER 3) Prone instability + test = pain in ant hip/groin 4) Log roll + test = increased ER of femur vs opposite NOTE: cluster of 3 tests = 95% chance of instability
74
What is the most accurate test overall for anterior microinstability of hip joint
AB-HEER test (SN/SP in 80's)
75
Test for greater trochanteric pain syndrome
Gluteal de-rotation (high SN/SP) SLS test (high SN/SP)
76
Deep gluteal syndrome
Defined as pain in the buttock area caused from a non-discogenic entrapment of the sciatic nerve possibly by the piriformis muscle
77
Tests for deep gluteal syndrome
Active piriformis test (Mod SN/SP) Seated piriformis test (SP HIGH) If used in combo with each other: SN 91% and SP 80%
78
Ischiofemoral impingement (IFI)
Abnormal contact between lesser trochanter and ischium
79
Tests for IFI
Long-stride (Better of the 2) Sidelying ischiofemoral impingement test
80
Tests to determine chronic proximal HS muscle involvement (cluster of 3)
1) Puranen-Orava test 2) Bent knee stretch test 3) Modified bent knee stretch test NOTE: if traumatic onset, early testing that stresses the tissues inappropriately are CONTRAINDICATED
81
Functional tests to assess valgus collapse of LE during dynamic task Also have the 2 tests been validated?
Step-down, SL squat Used to assess control of multiple jt's during SL dynamic task Yes, the tests have been validated in non-arthritic hip pain population (shown to have less pain and greater functional ability) SL squat > step-down
82
STAR Excursion Balance Test
Used to assess control of multiple jt's during SL dynamic task Assesses combo of strength, flexibility, balance, and proprioception
83
Tests for functional performance in arthritic hip pain
6MWT, 30" chair stand, step test, TUG, self-paced walk, timed SLS, 4-square step test, stair measure
84
MDC for 6MWT
48ft
85
MDC for 30" chair stand test
3.5 reps
86
MDC for step-test
3 steps
87
MDC for SLS test
10.8 seconds
88
Common cluster of findings in FAIS
Primary complaint is groin pain, "C" sign, functional limitations that involve end-range jt positions (especially in a repetitive manner), strength deficits (hip abd and ER/IR), tight hip flexor muscles (maybe)
89
T/F: FABER and FADIR tests are both good for FAIS?
False, only FADIR has shown screening utility
90
Is FAI a precursor to hip OA
Yes
91
Applicable functional measures for FAIS and microinstability
Step-down, SL squat, SEBT test (better in FAI)
92
Special test(s) for FAIS
FADIR
93
Special test(s) for hip microinstability
- Log-roll, FABER, AND 3 specific for anterior jt instability: AB-HEER, HEER, prone instability may also have + Beighton scale
94
Mechanical risk factors for hip OA
FAI, dysplasia, previous injury to the jt structures, high BMI
95
What ROM loss is most prominent in hip OA
IR
96
Special test(s) for hip OA
Scour, FABER, Long-axis distraction NOTE: these tests are NOT included in OA cluster of findings
97
Microinstability of the hip is most commonly caused by what?
Insufficient stabilization of the joint from the capsuloligamentous structures (anterior jt capsule and iliofemoral lig) that is caused by repetitive microtrauma
98
Clinical presentation of hip microinstability
Groin/deep hip pain, "C" sign, functional difficulties w/ activities that combine loading the hip in ER/EXT, strength deficits (abd/rotators)
99
Beighton scale - what body parts - what is threshold for laxity
Pinkies (>90° ext), thumbs (to forearm), knee and elbow hyperext (>10°), palms on floor 4/9 = threshold for presence of jt laxity
100
What is the single leading factor related to hip OA before 50 y/o?
Hip dysplasia
101
Hip dysplasia clinical findings
Hip ROM WNL or excessive, weakness (iliopsoas and hip abd), labral pathology, + FABER and FADIR (may be false +), + anterior hip instability tests
102
Cluster for diagnosis of arthritis hip pain (OA)
1) Moderate ant or lat hip pain w/ weight bearing activities 2) Morning stiffness <1hr 3) Hip IR ROM <24° OR Hip IR and FLEX 15° less vs opposite side 4) Pain w/ PROM IR
103
What balance tests are appropriate for hip OA?
BERG, 4 square step test, timed SLS test
104
What functional outcome tests are appropriate for hip OA population?
6MWT, stair climbing, 30" chair stand test
105
Coxa saltans external vs interna
Coxa saltans externa: laterally by the ITB Coxa saltans interna: iliopsoas tendon
106
Ilipsoas complex injuries are common in what sports?
Dance, football, soccer, ice hockey Any running or kicking sport
107
Adductor complex injuries are common in what sports?
Ice hockey and soccer
108
What muscle is most commonly affected by adductor complex strain
Adductor longus
109
Risk factors for hip adductor muscle injuries
- Previous groin injury - Poor offseason training (ice hockey <18 sessions) - Hip muscle weakness - Decreased hip ROM - Lack of sport-specific training
110
(Flexibility/strength) deficits have a stronger association with injury in hip muscle strains, specifically adductor complex injuries.
Strength
111
Athletic Pubalgia
aka "Sports Hernia" Abdominal and groin pain likely from weakening or tearing of the abdominal wall WITHOUT evidence of a true hernia Commonly associated with adductor pain
112
Cluster of signs/symptoms of Athletic Pubalgia
1) Deep groin pain 2) Pain increases w/ exertion, decreases w/ rest 3) TTP pubic rim 2-3cm lat to pubic tubercle 4) Pain w/ resisted hip add 5) Pain w/ resisted ab crunch
113
Signs of immediate concern and referral to rule out HS tendon avulsion
Proximal posterior thigh pain w/ traumatic onset, inability/unwillingness to bear weight, visible ecchymosis, palpable deficits in proximal HS
114
Cause of LE numbness/tingling post-HS injury (NOT lumbar related)
Large hematomas can compress sciatic nerve
115
More (distal/proximal) HS pain has been associated with longer recovery peroids
Proximal
116
Is the width and length of the tender region in HS injuries important in prognosis?
Width = no Length = predictive of return to sport
117
Strongest predictor of a future HS injury?
Previous HS muscle injury
118
Risk factors for HS injury
- Previous HS injury - > age - Previous knee injury/surgery - Weakness - Decreased muscle length - Overall limb stiffness - Poor lumbopelvic stability - SIJ dysfunction - Proprioceptive deficits
119
T/F: Recurrent HS injuries can lead to reduced sciatic nerve mobility
True, slump test has been recommended to assess
120
Tightness in (quad/HS) has been shown to be associated with increased HS injury risk
Quadriceps No association between HS tightness and injury!!
121
T/F: Isolated HS strengthening and stretching is better vs agility and core stab program for reduction of HS re-injury rates
False, core stab and agility is BETTER vs isolated HS work
122
Special tests for GTPS
FABER, gluteal de-rotation, SLS tests NOTE: in athletic populations more dynamic SL activities may be indicated (step-downs, SEBT etc)
123
Demographics of GTPS
Women, 40-65 y/o, can be in athletes
124
Hallmark symptom of GTPS and common functional deficits
Lateral hip pain Lying on side, stairs, walking, standing, sometimes sitting
125
Recently, (more/less) emphasis has been placed on length of the ITB-TFL muscle fascial complex when assessing GTPS
LESS, more focus on strength (movement dysfunction)
126
4 Clinical signs/symptoms for piriformis syndrome (w/ or w/o sciatica)
1) Buttock pain 2) Pain with sitting 3) TTP near greater sciatic notch 4) Pain w/ maneuvers that cause tension of piriformis
127
What special tests are indicated for piriformis syndrome
Active piriformis test & seated piriformis test When combined = Good screening and diagnostics Can also use step-down task - as poor eccentric piriformis strength may contribute to excessive adduction and IR
128
Special tests for IFI
Long-stride test & side-lying IFI
129
NSAID use in hip OA
NSAID use is effective tx for symptoms (per CPG) HOWEVER, some evidence associated it with increased fx risk in high activity population, may also increase progression of hip OA
130
Interventions for FAIS
1) Early education and activity modification (avoid provoking positions) 2) Stretching (especially hip flexors) 3) Jt mobs 4) Strengthening (emphasize abd and rotator muscles) 5) Neuromuscular control/recruitment (i.e. perturbations) 6) Task-specific (step-downs, SL squats etc) 7) Lumbopelvic stab activities
131
Is there return to play criteria for FAIS?
No, but recommended to use the one for knee injuries
132
Interventions for hip microinstability
1) Education and activity mod (avoid repetitive end-range motions that stress passive stabilizers - ext and ER) 2) Neuromuscular re-ed (perturbations) 3) Strengthening (NWB in mid-range, progress to end-ranges as appropriate, ALSO hip abd/rotator/core are emphasized!) Caution and possible avoidance of: stretching and mobs (especially those anteriorly)
133
Interventions for hip dysplasia
1) Education & activity modification (Joint protection strategies, cross training or training volume modifications) 2) Exercises to address muscle weakness (progressive, not aggressive), postural control, and motor control deficits 3) Gait/running pattern training Caution and possible avoidance of: stretching and mobs
134
Interventions for hip OA
1) Education & activity modification (AD, jt protection strategies, BMI management) 2) Strengthening (especially glute med) w/ dosage (2-3x/wk 2-4 x 8-12 reps) 3) Manual therapy (Mobs, STM) 4) Flexibility/stretching (at least 60" total stretching time) 5) Endurance as appropriate 6) Functional/gait/balance training 7) Aquatic therapy if severe 8) Aerobic exercise (affects central pain mechanisms and mood)
135
T/F: Combo heat and US with exercise is superior to just heat and exercise
True NOTE: only demonstrated by one study
136
Weight bearing restrictions for PNSF and pubic rami fx's
Lasts 6-8 wks, prevent further progression of fx
137
What type of exercises are appropriate for PNSF and pubic rami fx's?
NWB exercises that address impairments, caution w/ supine and side-lying SLR activities, do emphasize glute med Can also use aquatic therapy for "weight bearing" early on
138
When can you progress exercises in PNSF and pubic rami fx's? (from initial program)
When radiographic evidence shows fracture union
139
Weight bearing restrictions S/P fixation of tension-sided fx's AND Return to sport timeline
NWB 6wks, PWB 6wks Return to sport ~3-6 months
140
Are NSAIDS indicated for extra-articular injuries of the hip?
Use has been debated, there is a study that shows it can reduce strength loss, muscle soreness, and blood creatine kinase levels following ACUTE muscle injuries
141
Interventions for iliopsoas complex injuries
1) Activity modification (avoid provoking activities, cross train to avoid deconditioning) 2) Stretching (can be used in combo w/ STM) 3) Gradual strengthening (LE/core) 4) Endurance exercises (this in combo w/ lumbopelvic strengthening should start early) 5) Return to sport/activity (when appropriate)
142
Interventions for adductor injury
1) Education & activity mod (avoid excessive tension to adductors 2) Early on - gentle ROM hip/knee AND lumbopelvic stab 3) STM (evidence is lacking but favorable results have been noted) 4) Flexibility activities (ONLY once symptoms are stable) 5) Strengthening (isometric->concentric->eccentric)
143
What is the criteria to progress out of the protective phase of rehab when it comes to adductor muscle strains?
Tolerance of therapeutic exercise, low-level ADLs, and symptom stability
144
What is the adductor to abductor ratio?
In hockey players, you are 17x more likely to have an adductor strain if the muscle is less than 80% of their abductor strength
145
What test should be used to evaluate return to sport in adductor strains?
Copenhagen 5" adductor squeeze test (0°, 30°, 45°, 90°) NOTE: best @ 45° hip flexion
146
During EARLY stage of HS strain rehab how long is max recommended time for immobilization
Max 3-4 days = to prevent excessive scar tissue formation
147
During EARLY stage of HS strain rehab are mobilization and excessive stretching recommended?
NO, should be avoided After short period of relative immobilization, ROM exercises in pain-free range is recommended
148
T/F: Toe-touch or NWB gait patterns with crutches are recommended post-HS strain
FALSE, they may actually create excessive tensile loads on HS INSTEAD, use flat foot and normal mechanics
149
Interventions for EARLY phase of HS strain
- 3-4 days immobilization - AVOID excessive stretching or early mobilization - After short period of rest = ROM exercises in pain-free range - Can use crutches if needed (only normal pattern or flat foot) - Therapeutic exercise = low intensity, within pain-free ranges (isometrics)
150
Interventions for INTERMEDIATE phase of HS strain
- LE and lumbopelvic strengthening (HS - progressive resistance, start w/ isotonics @mid-range) - Stretching (if no significant weakness) - Neural mobs prn - SL balance and proprioception
151
Interventions for LATE phase of HS strain
- Strength and flexibility progression (end-range, lengthened state, eccentric, high velocity) - Progress balance/proprioception - Sport specific or work training
152
If significant HS weakness is noted in intermediate phase of rehab is aggressive end-range stretching encouraged?
NO, it should be avoided as musculotendinous unit is weakened and can't prevent further injury during stretching
153
What criteria is needed to switch from HS concentric strengthening to eccentric?
When good tolerance to all activities AND >50% HS strength vs opposite limb
154
Return to sport criteria for HS injuries
None, can use H test (SLR 3x/quick w/ knee extended) can test apprehension
155
Best sleeping position for those with severe GTPS
Supine w/ slight hip abduction
156
Primary goal for tx of GTPS
Manage load and compressive forces at the greater trochanter region through strengthening (gluteals) and optimizing movement patterns
157
Primary goal of tx for piriformis syndrome
Reduce muscle irritability and decrease compression of the sciatic nerve (if involved)
158
Interventions for piriformis syndrome
- Education/activity mod: minimize compression or lengthened state of the piriformis (avoid crossing legs, lying on one side w/ top leg crossed over, sitting on wallet) - STM: may be helpful as long as it doesn't progress symptoms - Stretching (not aggressive) - Strengthening of hip/lumbopelvics
159
Goal for tx of ischiofemoral impingement (IFI)
Minimzing the position of impingement of the quadratus femoris within the QFS
160
What muscle group tightness may play a big role in IFI
Hip adductor tightness
161
Interventions of IFI
- Education and activity mod: MOI and pain management strategies - STM (limited evidence) - Dry needling (limited evidence) - Jt mobs (if capsular limitations) - Stretching (especially adductors, stretch them in extension) - Strengthening (especially abd and ER's) of LE's and lumbopelvic
162
Evidence for jt mobilization in hip OA vs non-arthritic hip
Hip OA = STRONG Hip non-arthritic = limited (use expert opinion)
163
Evidence for dry needling in management of hip pain
Limited, may help for short-term pain relief (<12wks)
164
Exercises that demonstrate relatively isolated glute medius muscle recruitment
- Side-plank w/ hip abduction - Side-plank to neutral position - Front plank w/ hip ext - Side-lying hip abd
165
Compound movements that show high glute medius recruitment:
SL squats, reverse lunges, variations of step-downs
166
3 exercises with highest gluteal medius vs TFL recruitment ratio
1) Resisted clamshell 2) Resisted side-steps 3) SL bridge
167
What exercise and its variations result in the greatest amount of glute max recruitment? Other exercises show high potential for glute max muscle recruitment?
Step-ups Other for glute max: hip thrust, squat, deadlift, lunges
168
T/F: Lumbopelvic strengthening should be a standard consideration for ALL hip pathology
True
169
Is use of bio-feedback for lumbopelvic stab activities indicated in hip population
Yes
170
Are balance and gait training indicated in tx of hip pathology
Weak evidence for OA population, BUT it should be used to reflect goals and functional demands of the patient
171
Outcome measures for non-arthritic hip conditions
1) Hip Outcome Score (HOS) - ADL and sports 2) 33-item International Hip Outcome Tool (iHot-33) - QOL in active patients 3) Copenhagen Hip and Groin Outcomes Scale (HAGOS) - longstanding hip/groin pain
172
Outcome measures for arthritic hip conditions
1) Western Ontario and McMaster Universities Arthritis Index (WOMAC) - Instrument of choice for assessing consequences of hip or/and knee OA in elderly 2) Hip disability and Osteoarthritis Outcome Score (HOOS) - QOL in pt's w/ hip disability and OA 3) Modified Harris Hip Score (MHHS) - Low level tasks
173
LCEA angle
Lateral central edge angle (LCEA) - Normal 25°-39°
174
LCEA <25° = (overcoverage/undercoverage)
Undercoverage = dysplasia
175
LCEA ≥40° = (overcoverage/undercoverage)
Overcoverage = pincer FAI
176