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Linear Growth Velocity
Aka: Linear Growth Velocity, Growth Velocity
- Indications
- Growth Assessment
- Assessment for collagen bone disease
- Efficacy
- Single most important Growth Assessment screening tool
- Exam: Normal height increase
- Age <1 year: 10.0 inches (25 cm, range 23-27cm) growth/year
- Age <6 months: 16 to 17 cm growth/year
- Age 6-12 months: 8 cm growth/year
- Age 1 to 2 years: 4.0 inches (10 cm, range 10-14 cm) growth/year
- Age 2 to 3 years: 3.2 inches (8 cm) growth/year
- Age 3 to 4 years: 2.8 inches (7 cm) growth/year
- Age 4 to 10 years: 2.0-2.4 inches (5-6 cm) growth/year
- Prepuberty Nadir
- Age 10 year old girl: 2.2 inches (5.5 cm) growth/year
- Age 12 year old boy: 1.9 inches (4.9 cm) growth/year
- Pubertal Acceleration
- Girls: 3.15 to 4.72 inches (8-12 cm) growth/year
- Boys: 3.94 to 5.51 inches (10-14 cm) growth/year
- Interpretation: Abnormal Growth
- Growth/Year
- Age 3 years to Puberty: <1.75 inches (4.5 cm)
- Age 5 years to Puberty: <2 inches (5 cm)
- Minimum time interval between assessments
- Age <3 years: minimum 4 month interval
- Age >3 years: minimum 6 month interval