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. 2020 Jun 11;55(1):5–19. doi: 10.1007/s43465-020-00162-y

Table 1.

Table showing similarities and differences between various international hip surveillance models

Category Scandinavian Australian British Columbian AAPCDM
1. Year established 1994

2008

Revised 2014

2012 2017
2. Evaluation done by whom and what it includes

Done by physical therapists

Evaluation includes

 Gross and fine motor function

 Upper limb and lower limb range of motion

 Spine examination

 Radiographs

Done by physical therapists

Evaluation includes

 Gross and fine motor function

 Upper limb and lower limb range of motion

 Radiographs

 Spine examination

 Limb length

 Gait

Done by physical therapists

Evaluation includes

 Gross and fine motor function

 Upper limb and lower limb range of motion

 Radiographs

 Spine examination

 Limb length

 Gait

Done by physical therapists

Evaluation includes

 Gross and fine motor function

 Upper limb and lower limb range of motion

 Radiographs

 Spine examination

 Limb length

 Gait

3. Evaluation of various GMFCS levels
GMFCS I
 Clinical examination (CE) Every 6 months till 6 years of age and then 12 monthly thereafter till skeletal maturity

Starts at 12–24 months of age

Review at 3 and 5 years

12 monthly till 5 years of age

Starts at 2 years of age

Review at 4 and 6 years of age

 Radiographs (AP pelvis with both hips) No X-ray (unless deterioration of hip/spine examination) No X-ray

X-ray at 5 years of age

If normal, discharge from surveillance

No X-ray
GMFCS II
 Clinical examination (CE)`

Every 6 months till 6 years age and then 12 monthly thereafter till skeletal maturity

Discharge at skeletal maturity

12 months after commencement

If MP unstable/abnormal, repeat 12 monthly until stabilized.

If MP stable, review at 4–5 years of age.

At 4–5 years of age, if MP unstable/abnormal, repeat 12 monthly until stabilized. If MP stable, review at 8–10 years of age

At 8–10 years, if MP unstable then repeat 12 monthly until stabilized or patient reaches skeletal maturity

12 monthly till 5 years of age Every 24 months from 2 to 10 years of age
 Radiographs (AP pelvis with both hips)

At age 2 and 6 years

After 6 years—if no deterioration on CE and MP < 33%, no further X-rays required

12 months after commencement

If MP unstable/abnormal, repeat 12 monthly until stabilized.

If MP stable, review at 4–5 years of age.

At 4–5 years of age, if MP unstable/abnormal, repeat 12 monthly until stabilized. If MP stable, review at 8–10 years of age

At 8–10 years, if MP unstable then repeat 12 monthly until stabilized or patient reaches skeletal maturity

If MP stable, discharge from surveillance

X-ray at 5 years of age

If normal, discharge from surveillance

X-ray at 2, 6, 10 years of age

If MP < 30% at 10 years of age, discharge from surveillance

GMFCS III
 Clinical examination

Every 6 months till 6 years age and then 12 monthly thereafter till skeletal maturity

After skeletal maturity

If MP stable/normal and no scoliosis, continue only clinical surveillance

6 months after commencement

If unstable/abnormal repeat every 6 monthly until stabilized

If MP stable, repeat every 12 monthly

Review at 7 years of age

If unstable/abnormal, repeat every 6 monthly until stabilized

If MP stable/normal, discontinue surveillance till pre-pubertal age

Review at pre-puberty

After initial clinical examination, review at 24 months of age and 12 monthly thereafter till 6 years of age

12 monthly from 6 years of age till skeletal maturity

Every 12 monthly from 2 to 8 years of age

Every 24 months from 8 to 16 years of age or till skeletal maturity

Radiographs (AP pelvis with both hips)

Every 12 months till 8 years of age

After 8 years till skeletal maturity—X-ray frequency individualized based on previous clinical and X-ray findings

If MP stable/normal, X-rays every 24 months till skeletal maturity

After skeletal maturity, no further X-rays if MP < 33% and no scoliosis.

If MP abnormal, progressive scoliosis or pelvic obliquity, continue surveillance

6 months after commencement

If unstable/abnormal repeat every 6 monthly until stabilized

If MP stable, repeat every 12 monthly

Review at 7 years of age

If unstable/abnormal, repeat every 6 monthly until stabilized

If MP stable/normal, discontinue surveillance till pre-pubertal age

Review at pre-puberty

X-ray 12 monthly till skeletal maturity

At skeletal maturity

If MP stable/normal, discontinue surveillance

If MP abnormal, gait deterioration, progressive scoliosis or pelvic obliquity, continue surveillance 12 monthly

Initial X-ray at 24 months of age and 12 monthly thereafter till 6 years of age.

Every 24 months from 6 years of age till skeletal maturity

Every 12 monthly from 2 to 8 years of age

Every 24 months from 8 to 16 years of age or till skeletal maturity

If MP unstable/abnormal, repeat every 12 monthly until stabilized

At skeletal maturity

If MP stable/normal, discontinue surveillance

If MP abnormal, progressive scoliosis or pelvic obliquity, continue surveillance

GMFCS IV
 Clinical examination

Every 6 months till 6 years of age and then 12 monthly thereafter till skeletal maturity

After skeletal maturity

If MP stable/normal and no scoliosis, continue only clinical surveillance

6 months after commencement

If unstable/abnormal repeat every 6 monthly until stabilized

If MP stable, repeat every 12 monthly

Review at 7 years of age

If MP unstable/abnormal, repeat every 6 monthly until stabilized

If MP stable/normal, discontinue surveillance till pre-pubertal age

Review at pre-puberty

After initial clinical examination, review at 24 months of age and 6 monthly thereafter till 6 years of age

12 monthly from 6 years of age till skeletal maturity

6 monthly from 2 to 4 years of age

12 monthly from 4 years of age till 16 years of age or skeletal maturity

 Radiographs (AP pelvis with both hips)

Every 12 months till 8 years of age

After 8 years till skeletal maturity—X-ray frequency individualized based on previous clinical and X-ray findings

If MP stable/normal, X-rays every 24 months till skeletal maturity

After skeletal maturity, no further X-rays if MP < 33% and no scoliosis

If MP abnormal, progressive scoliosis or pelvic obliquity, continue surveillance

6 months after commencement

If unstable/abnormal repeat every 6 monthly until stabilized

If MP stable, repeat every 12 monthly

Review at 7 years of age

If MP unstable/abnormal, repeat every 6 monthly until stabilized

If MP stable/normal, discontinue surveillance till pre-pubertal age

Review at pre-puberty

X-ray 12 monthly till skeletal maturity

At skeletal maturity

If MP stable/normal, discontinue surveillance

If MP abnormal, gait deterioration, progressive scoliosis or pelvic obliquity, continue surveillance 12 monthly

Initial X-ray at 24 months of age and 6 monthly thereafter till 6 years of age

12 monthly from 6 years of age till skeletal maturity

6 monthly from 2 to 4 years of age

If MP unstable/abnormal, repeat every 6 monthly until stabilized

If MP stable/normal, 12 monthly from 4 years of age till 16 years of age or skeletal maturity

At skeletal maturity

If MP stable/normal, discontinue surveillance

If MP abnormal, progressive scoliosis or pelvic obliquity, continue surveillance

GMFCS V
Clinical examination

Every 6 months till 6 years of age and then 12 monthly thereafter till skeletal maturity

After skeletal maturity

If MP stable/normal and no scoliosis, continue only clinical surveillance

6 months after commencement.

6 monthly till 7 years of age

Review at 7 years of age

If MP stable/normal, 12 monthly till skeletal maturity

If MP abnormal, presence of scoliosis or pelvic obliquity, 6 monthly till skeletal maturity

At skeletal maturity

If MP stable/normal, discontinue surveillance

If MP abnormal, progressive scoliosis or pelvic obliquity, continue surveillance 12 monthly

After initial clinical examination, review at 24 months of age and 6 monthly thereafter till 6 years of age

12 monthly from 6 years of age till skeletal maturity

6 monthly from 2 to 4 years of age

12 monthly from 4 years of age till 16 years of age or skeletal maturity

 Radiographs (AP pelvis with both hips)

Every 12 months till 8 years of age

After 8 years till skeletal maturity—X-ray frequency individualized based on previous clinical and X-ray findings

If MP stable/normal, X-rays every 24 months till skeletal maturity

After skeletal maturity, no further X-rays if MP < 33% and no scoliosis

If MP abnormal, progressive scoliosis or pelvic obliquity, continue surveillance

6 months after commencement

6 monthly till 7 years of age

Review at 7 years of age

If MP stable/normal, 12 monthly till skeletal maturity

If MP abnormal, presence of scoliosis or pelvic obliquity, 6 monthly till skeletal maturity

At skeletal maturity

If MP stable/normal, discontinue surveillance

If MP abnormal, progressive scoliosis or pelvic obliquity, continue surveillance 12 monthly

Initial X-ray at 24 months of age and 6 monthly thereafter till 6 years of age

12 monthly from 6 years of age till skeletal maturity

6 monthly from 2 to 4 years of age

If MP unstable/abnormal, repeat every 6 monthly until stabilized

If MP stable/normal, 12 monthly from 4 years of age till 16 years of age or skeletal maturity

At skeletal maturity

If MP stable/normal, discontinue surveillance

If MP abnormal, progressive scoliosis or pelvic obliquity, continue surveillance

4. WGH type IV
 Clinical examination Does not mention

Review at 5 years of age

If MP unstable/abnormal, repeat 12 monthly until stabilized

If MP stable, review at 10 years of age

After 10 years of age, 12 monthly till skeletal maturity

At skeletal maturity

If MP stable/normal, discontinue surveillance

If MP abnormal, progressive scoliosis or pelvic obliquity, continue surveillance 12 monthly

12 monthly from 2 years of age till skeletal maturity but review at 5 years of age Every 24 months from 2 years of age till skeletal maturity
 Radiographs (AP pelvis with both hips)

Review at 5 years of age

If MP unstable/abnormal, repeat 12 monthly until stabilized

If MP stable, review at 10 years of age

After 10 years of age, 12 monthly till skeletal maturity

At skeletal maturity

If MP stable/normal, discontinue surveillance

If MP abnormal, progressive scoliosis or pelvic obliquity, continue surveillance 12 monthly

Review at 5 years of age with X-ray

12 monthly from 5 years of age till skeletal maturity

X-ray at 2, 6, 10 years of age

Every 24 months from 10 to 16 years of age or till skeletal maturity.

At skeletal maturity

If MP stable/normal, discontinue surveillance

If MP abnormal, progressive scoliosis or pelvic obliquity, continue surveillance

5. Orthopaedic referral MP > 33% MP > 30% and/or unstable MP and/or hip pain

MP > 30%

Hip abduction < 30°

Presence of hip pain

Difficulty in ADLs related to the hip

Decreased ability to walk, sit, or stand related to the hip

MP > 30%

Hip abduction < 30°

Presence of hip pain on history or examination