NCT05136482

Brief Summary

Cryotherapy after surgery is widely utilised and has numerous practical applications for post-operative rehabilitation. Previous research has suggested that during cold therapy, the skin temperature of the knee should be reduced to 10-15°C to maximise the therapeutic benefits of cooling while avoiding the risk of cold injuries such as nerve damage and frostbite (Wilke and Weiner, 2003; Bleakley, McDonough and MacAuley, 2004). The temperature range at which a device cryocompression device should be set in order to achieve a skin temperature within the therapeutic range of 10-15°C is unknown. Furthermore, there is evidence to suggest that the temperature of the device does not equal that to which the skin is reduced, plus different devices do not achieve the same reduction in skin temperature despite the ice-water within the knee sleeve being maintained at similar temperatures (Selfe et al., 2009). Therefore, it is not sufficient to assume that the temperature setting of a cryo-compression device reflects the skin temperature achieved. The aim of this study is to determine which temperature of ice-water flowing through a Physiolab S1 cryocompression device is able to reduce skin temperature around the knee to within the previously stated therapeutic range.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
32

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Nov 2021

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

November 4, 2021

Completed
6 days until next milestone

Study Start

First participant enrolled

November 10, 2021

Completed
19 days until next milestone

First Posted

Study publicly available on registry

November 29, 2021

Completed
5 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 11, 2022

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

May 11, 2022

Completed
Last Updated

May 19, 2022

Status Verified

May 1, 2022

Enrollment Period

6 months

First QC Date

November 4, 2021

Last Update Submit

May 18, 2022

Conditions

Outcome Measures

Primary Outcomes (1)

  • Skin Temperature

    Skin temperature will be measured using a thermocouple positioned 20 mm distal to the patella. This sensor will be attached prior to the cryocompression device being applied, and will remain in place until the testing session is complete and skin temperature is \>15℃. (The therapeutic skin temperature range for cryotherapy is thought to be 10-15℃). Temperature will be measured prior to the cryocompression device being applied; every 5 minutes during the test; and every 5 minutes after a test until the skin temperature reaches \>15℃.

    up to 14 days

Study Arms (5)

Control

NO INTERVENTION

Participants will wear the cryocompression device for 30 mins without any cold or pressure being applied to the lower limb by the cuff.

Condition A

EXPERIMENTAL

Participants will wear the cryocompression device for 30 minutes while ice-water at a temperature of 6℃ and a pressure of 25 mmHg is applied to the lower limb by the cuff.

Device: Cryocompression

Condition B

EXPERIMENTAL

Participants will wear the cryocompression device for 30 minutes while ice-water at a temperature of 8℃ and a pressure of 25 mmHg is applied to the lower limb by the cuff.

Device: Cryocompression

Condition C

EXPERIMENTAL

Participants will wear the cryocompression device for 30 minutes while ice-water at a temperature of 10℃ and a pressure of 25 mmHg is applied to the lower limb by the cuff.

Device: Cryocompression

Condition D

EXPERIMENTAL

Participants will wear the cryocompression device for 30 minutes while ice-water at a temperature of 12℃ and a pressure of 25 mmHg is applied to the lower limb by the cuff.

Device: Cryocompression

Interventions

A cryocompression device will be attached to the lower limb of participants using a cuff spanning from the mid-thigh to mid-calf. The device will exert a constant pressure of 25 mmHg throughout each test session. The device will pump temperature-controlled cold water through the cuff in order to reduce the skin temperature around the knee (and intra-articular temperature). Depending on the condition, the temperature of the water being pumped through the device will be either 6, 8, 10, or 12℃. Each test session will last for 30 minutes. Participants will take part in all conditions, with at least 24 hours rest in between test sessions. Skin temperature around the knee will be measured prior to the cryocompression device being applied; every 5 minutes during the 30 minute test; and every 5 minutes after the test until skin temperature \>15℃.

Condition ACondition BCondition CCondition D

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • \>18 years of age.

You may not qualify if:

  • BMI \>40 kg/m2
  • History of nerve damage or sensory deficit in the lower limbs (including frostbite)
  • Hypersensitivity to cold, including hives
  • Active inflammation or pain of the knee
  • History of thrombosis, embolism, or other conditions related to impaired peripheral circulation
  • Suffering from diagnosed diabetes, multiple sclerosis, rheumatoid arthritis, spinal cord injury, cardio-vascular disease, hypertension, Raynaud disease, cryoglobulinemia, or haemoglobinuria
  • Confirmed or suspected tissue infection, an unstable fracture, a skin condition, or a tumour in the treatment area
  • Cognitive impairment or communication barriers
  • These criteria have been selected in accordance with the common contraindications for cold therapy (Selfe et al, 2009; Fang et al, 2012; Waterman et al, 2012) and those laid out in the manufacturer's guidelines of the specific device to be used (S1; Physiolab Technologies Ltd)

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Physiology Laboratory

Winchester, United Kingdom

Location

Related Publications (5)

  • Wilke B, Weiner RD. Postoperative cryotherapy: risks versus benefits of continuous-flow cryotherapy units. Clin Podiatr Med Surg. 2003 Apr;20(2):307-22. doi: 10.1016/S0891-8422(03)00009-0.

    PMID: 12776983BACKGROUND
  • Bleakley C, McDonough S, MacAuley D. The use of ice in the treatment of acute soft-tissue injury: a systematic review of randomized controlled trials. Am J Sports Med. 2004 Jan-Feb;32(1):251-61. doi: 10.1177/0363546503260757.

    PMID: 14754753BACKGROUND
  • Selfe J, Hardaker N, Whittaker J and Hayes C. An investigation into the effect on skin surface temperature of three cryotherapy modalities. Thermology International. 2009; 19(4): 121-126.

    BACKGROUND
  • Fang L, Hung CH, Wu SL, Fang SH, Stocker J. The effects of cryotherapy in relieving postarthroscopy pain. J Clin Nurs. 2012 Mar;21(5-6):636-43. doi: 10.1111/j.1365-2702.2010.03531.x. Epub 2011 Feb 20.

    PMID: 21332855BACKGROUND
  • Waterman B, Walker JJ, Swaims C, Shortt M, Todd MS, Machen SM, Owens BD. The efficacy of combined cryotherapy and compression compared with cryotherapy alone following anterior cruciate ligament reconstruction. J Knee Surg. 2012 May;25(2):155-60. doi: 10.1055/s-0031-1299650.

    PMID: 22928433BACKGROUND

MeSH Terms

Conditions

Body Temperature Changes

Condition Hierarchy (Ancestors)

Signs and SymptomsPathological Conditions, Signs and Symptoms

Study Officials

  • James Faulkner, PhD

    University of Winchester

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
CROSSOVER
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

November 4, 2021

First Posted

November 29, 2021

Study Start

November 10, 2021

Primary Completion

May 11, 2022

Study Completion

May 11, 2022

Last Updated

May 19, 2022

Record last verified: 2022-05

Data Sharing

IPD Sharing
Will not share

No individual data will be shared outside of the researchers directly involved in the data collection itself.

Locations