Trial Outcomes & Findings for The Effect of Botulinum Toxin A Injections on Ankle Dorsiflexion Following Internal Fixation of Tibial Pilon Fractures (NCT NCT02051933)

Results Overview

The difference in ankle dorsiflexion between the injured and un-injured ankles as measured with goniometer 6 month from surgery.

Recruitment status

TERMINATED

Study phase

NA

Target enrollment

10 participants

Primary outcome timeframe

6 month follow-up visit

Results posted on

2022-04-21

Participant Flow

Participant milestones

Participant milestones
Measure	Botox Botox: At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL Botulinum toxin type A. The dose of botulinum toxin will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Botox will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in Botox (rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U	Placebo Placebo: At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL 0.9% sodium chloride solution . The dose of 0.9% sodium chloride will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Placebo will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in placebo(rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U
Overall Study STARTED	5	5
Overall Study COMPLETED	5	4
Overall Study NOT COMPLETED	0	1

Reasons for withdrawal

Reasons for withdrawal
Measure	Botox Botox: At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL Botulinum toxin type A. The dose of botulinum toxin will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Botox will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in Botox (rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U	Placebo Placebo: At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL 0.9% sodium chloride solution . The dose of 0.9% sodium chloride will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Placebo will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in placebo(rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U
Overall Study Physician Decision	0	1

Baseline Characteristics

The Effect of Botulinum Toxin A Injections on Ankle Dorsiflexion Following Internal Fixation of Tibial Pilon Fractures

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure	Botulinum Toxin Type A n=5 Participants Botox: At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL Botulinum toxin type A. The dose of botulinum toxin will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Botox will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in Botox (rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U	0.9% Sodium Chloride n=5 Participants Placebo: At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL 0.9% sodium chloride solution . The dose of 0.9% sodium chloride will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Placebo will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in placebo(rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U	Total n=10 Participants Total of all reporting groups
Age, Continuous	45.2 years STANDARD_DEVIATION 8.9 • n=5 Participants	42.0 years STANDARD_DEVIATION 11.0 • n=7 Participants	43.6 years STANDARD_DEVIATION 9.6 • n=5 Participants
Sex: Female, Male Female	0 Participants n=5 Participants	1 Participants n=7 Participants	1 Participants n=5 Participants
Sex: Female, Male Male	5 Participants n=5 Participants	4 Participants n=7 Participants	9 Participants n=5 Participants

PRIMARY outcome

Timeframe: 6 month follow-up visit

The difference in ankle dorsiflexion between the injured and un-injured ankles as measured with goniometer 6 month from surgery.

Outcome measures

Outcome measures
Measure	Botox n=4 Participants At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL Botulinum toxin type A. The dose of botulinum toxin will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Botox will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in Botox (rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U	Placebo n=4 Participants Placebo: At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL 0.9% sodium chloride solution . The dose of 0.9% sodium chloride will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Placebo will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in placebo(rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U
Ankle Dorsiflexion of Injured Extremity	-3.8 degrees Interval -12.0 to 5.0	11.8 degrees Interval -3.0 to 40.0

SECONDARY outcome

Timeframe: 6 month follow-up visit

The SF-36 is a patient reported survey of health. Physical functioning, role functioning/physical and general health sub-scores ranges from 0 (worst)- 100 (best)

Outcome measures

Outcome measures
Measure	Botox n=4 Participants At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL Botulinum toxin type A. The dose of botulinum toxin will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Botox will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in Botox (rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U	Placebo n=4 Participants Placebo: At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL 0.9% sodium chloride solution . The dose of 0.9% sodium chloride will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Placebo will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in placebo(rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U
Short Form-36 (SF-36)Health Related Quality of Life SF-36 Physical Functioning)	30.0 units on a scale Standard Deviation 24.5	55.0 units on a scale Standard Deviation 16.8
Short Form-36 (SF-36)Health Related Quality of Life SF-36 Role functioning/physical	0 units on a scale Standard Deviation 0	0 units on a scale Standard Deviation 0
Short Form-36 (SF-36)Health Related Quality of Life SF-36 General health	65.0 units on a scale Standard Deviation 21.6	68.8 units on a scale Standard Deviation 18.9

SECONDARY outcome

Timeframe: 12 month follow-up visits

The SF-36 is a patient reported survey of health. Physical functioning, role functioning/physical and general health sub-scores ranges from 0 (worst)- 100 (best)

Outcome measures

Outcome measures
Measure	Botox n=3 Participants At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL Botulinum toxin type A. The dose of botulinum toxin will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Botox will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in Botox (rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U	Placebo n=3 Participants Placebo: At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL 0.9% sodium chloride solution . The dose of 0.9% sodium chloride will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Placebo will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in placebo(rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U
Short Form-36 (SF-36) Health Related Quality of Life SF-36 Role functioning/physical	58.3 units on a scale Standard Deviation 52.0	33.3 units on a scale Standard Deviation 38.2
Short Form-36 (SF-36) Health Related Quality of Life SF-36 General health	63.3 units on a scale Standard Deviation 37.5	75.0 units on a scale Standard Deviation 26.5
Short Form-36 (SF-36) Health Related Quality of Life SF-36 Physical Functioning)	45.0 units on a scale Standard Deviation 36.1	70.0 units on a scale Standard Deviation 13.2

SECONDARY outcome

Timeframe: 6 month follow-up visit

Brief pain inventory (BPI) severity subscale measures pain severity with a higher score indicates worse pain (10) and lower score of no pain (0). The pain interference subscale of the BPI measures interference of pain on average of the 7 questions assessing the interference of pain for general activity, mood, walking ability, normal work, relations with other people, sleep, and enjoyment of life.

Outcome measures

Outcome measures
Measure	Botox n=4 Participants At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL Botulinum toxin type A. The dose of botulinum toxin will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Botox will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in Botox (rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U	Placebo n=4 Participants Placebo: At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL 0.9% sodium chloride solution . The dose of 0.9% sodium chloride will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Placebo will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in placebo(rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U
Ankle Pain at 6 Month Pain Severity (BPI)	3.38 units on a scale Standard Deviation 1.9	2.94 units on a scale Standard Deviation 1.2
Ankle Pain at 6 Month Pain Interference (BPI)	3.4 units on a scale Standard Deviation 2.4	1.7 units on a scale Standard Deviation 2.6

SECONDARY outcome

Timeframe: 12 month follow-up visit

Brief pain inventory (BPI) severity subscale measures pain severity with a higher score indicates worse pain (10) and lower score of no pain (0). The pain interference subscale of the BPI measures interference of pain on average of the 7 questions assessing the interference of pain for general activity, mood, walking ability, normal work, relations with other people, sleep, and enjoyment of life.

Outcome measures

Outcome measures
Measure	Botox n=3 Participants At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL Botulinum toxin type A. The dose of botulinum toxin will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Botox will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in Botox (rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U	Placebo n=3 Participants Placebo: At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL 0.9% sodium chloride solution . The dose of 0.9% sodium chloride will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Placebo will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in placebo(rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U
Ankle Pain at 12 Month Pain Interference (BPI)	4.1 units on a scale Standard Deviation 3.5	1.0 units on a scale Standard Deviation 1.0
Ankle Pain at 12 Month Pain Severity (BPI)	2.92 units on a scale Standard Deviation 2.5	3.17 units on a scale Standard Deviation 1.4

SECONDARY outcome

Timeframe: 6 month follow-up visit

The Foot and Ankle Ability Measure (FAAM) will be obtained to assess the functional status of the affected ankle. Each item is scored on a 5-point Likert scale (4 to 0) from 'no difficulty at all' to 'unable to do'. Item score totals, which range from 0 to 84 for the ADL subscale and 0 to 32 for the Sports subscale, were transformed to percentage scores. Higher scores represent higher levels of function for each subscale, with 100% representing no dysfunction.

Outcome measures

Outcome measures
Measure	Botox n=5 Participants At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL Botulinum toxin type A. The dose of botulinum toxin will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Botox will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in Botox (rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U	Placebo n=5 Participants Placebo: At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL 0.9% sodium chloride solution . The dose of 0.9% sodium chloride will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Placebo will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in placebo(rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U
Functional Status of the Ankle at 6 Month	32.4 units on a scale Standard Deviation 19.0	65.2 units on a scale Standard Deviation 20.7

SECONDARY outcome

Timeframe: 12 month follow-up visit

The Foot and Ankle Ability Measure (FAAM) will be obtained to assess the functional status of the affected ankle. A higher score represents a higher level of physical function.

Outcome measures

Outcome measures
Measure	Botox n=3 Participants At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL Botulinum toxin type A. The dose of botulinum toxin will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Botox will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in Botox (rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U	Placebo n=3 Participants Placebo: At the time of definitive fixation, the hospital's investigational pharmacy will provide four syringes containing 0.5mL 0.9% sodium chloride solution . The dose of 0.9% sodium chloride will be calculated based on the patient's weight in kilograms, such that a total dose of 200U of Placebo will be used for a 70kg individual. The dosage will scale linearly in proportion to the patient's body weight, such that each kilogram change results in a 3U change in placebo(rounded to the nearest 30U interval change from 200U, with a maximum of 300U). 45-55 kg: 140U 55-65 kg: 170U 65-75 kg: 200U 75-85 kg: 230U 85-95 kg: 260U 95-105 kg: 290U 105-115 kg: 300U
Functional Status of the Ankle at 12 Month	63.1 units on a scale Standard Deviation 12.5	70.2 units on a scale Standard Deviation 16.9

Adverse Events

Botox

Serious events: 0 serious events

Other events: 0 other events

Deaths: 0 deaths

Placebo

Serious events: 0 serious events

Other events: 0 other events

Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

Christine Churchill

CarolinasHS

Phone: 704-355-6947

Email: [email protected]

Results disclosure agreements

Principal investigator is a sponsor employee
Publication restrictions are in place