Leg length Flashcards

1
Q

anatomical leg length diff def

A

when a physical shortening of a unilateral lower limb exists between the head of the femur and the ankle mortise.

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2
Q

functional leg length diff def

A

Functional, or apparent, limb length inequality can be described as a unilateral asymmetry of the lower extremity without any concomitant shortening of the osseous components of the lower limb

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3
Q

when is a leg length discrepancy considered moderate or severe

A

30-60 mod

60 is severe

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4
Q

prevalence range in leg length discrepancy

A

4-95%

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5
Q

giles and taylor - scoliosis and LLI

A

functional correction occurred with a heel lift (worked in younger age, older age had a wedge shaped VB)

when the difference was > 9 mm there was a scoliotic curve, convex to the short limb side (left side)

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6
Q

scoliosis and LLI - the lumbar convexity occurs towards which side?

A

the short limb side (Hoikka et al, said that may occur on the side of the longer limb)

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7
Q

Holmes - IT band syndrome and LLI

A

7 of 61 cyclicts with knee pain and ITBS also had a leg legnth inequality..

this is irrelevant

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8
Q

Subotnick IT band syndrome and LLI

A

ITBS manifests on shorter limb side

this is so stupid

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9
Q

LLI and achilles tendinopathy, relevant?

A

no sir

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10
Q

stress fractures and LLI?

A

Friberg in finnish army people, doesn’t seem related

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11
Q

LLI and scitatica

A

LLI and scitatica

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12
Q

LLI and trochanteric bursitis

A

more likely on short side?

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13
Q

gold standard for LLI diagnosis

A

x-ray, but people will also use scanogram sometimes because it has less error than xray

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14
Q

four “direct” measures of LLI

A
  1. ASIS to medial malleolus
  2. ASIS to lateral malleolus
  3. Xiphoid process to medial malleolus
  4. Umbilicus to medial malleolus
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15
Q

What did Mann et al say about LLI measurements

A

no correlation between percentage body fat and differences in rater agreement of LLI

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16
Q

how many direct meethods sources of error

A

6

  1. Proximal landmark Right
  2. Proximal landmark Left
  3. Distal landmark Right
  4. Distal landmark Left
  5. Measurement Right
  6. Measurement Left
17
Q

Ross’ method for indirect measurement that he likes

A

shimming with heel lifts (because palpation and visual estimate is not reliable)

18
Q

most clinically useful way for measuring LLI

A

the indirect method

19
Q

no matter what is happening in the pelvis, what will be shorter on the short limb side (anatomical difference)

A

greater trochanter will be lower

20
Q

height of heel lift max for typical shoes

A

useful up to 12.55mm

21
Q

how long between weeks of changing for lift therapy

A

every 2 weeks, change should be between 3 to 6mm

22
Q

what % of people got better with heel lift by Friberg

A

88%