NCT04472000

Brief Summary

Postoperative shoulder stiffness is a common complication after shoulder surgery (incidence 10-15%). The symptoms consist primarily in a painful impairment of the mobility of the glenohumeral joint, usually after initially good course. Cause and origin are not clear. Vitamin C is known as an inactivator of free radicals and plays a key role in building collagen tissue. Vitamin C thus has a modulating role in inflammatory reactions. Injured and ill people have been shown to have significantly increased vitamin C needs, which underlines this role. Evidence was also found that vitamin C has a positive influence on similar diseases such as the complex regional pain syndrome (CRPS, Morbus Sudeck) on the wrist and postoperative arthrofibrosis on the knee joint. The Investigators want to investigate whether vitamin C intake can positively influence the incidence and / or severity of postoperative shoulder stiffness after shoulder surgery. The primary objective of this study is to investigate the effect of vitamin C on the external rotational ability of the operated shoulder in the glenohumeral joint compared to the opposite side at 12 weeks post surgery. Secondary objectives of this study are to investigate other shoulder mobility tests, patient-reported outcomes (level of pain, ability/return to work, smoking habits), patient-reported questionnaires (Constant Score, Oxford shoulder score, DASH score) and the incidence of a frozen shoulder at 6, 12, 26, and 52 weeks post surgery. Total duration of study: 2.5 years.

Trial Health

57
Monitor

Trial Health Score

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

Enrollment
46

participants targeted

Target at P25-P50 for phase_4

Timeline
Completed

Started Apr 2021

Typical duration for phase_4

Geographic Reach
1 country

2 active sites

Status
terminated

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

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

July 10, 2020

Completed
5 days until next milestone

First Posted

Study publicly available on registry

July 15, 2020

Completed
10 months until next milestone

Study Start

First participant enrolled

April 27, 2021

Completed
2.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 16, 2023

Completed
11 months until next milestone

Study Completion

Last participant's last visit for all outcomes

April 21, 2024

Completed
Last Updated

June 14, 2024

Status Verified

June 1, 2024

Enrollment Period

2.1 years

First QC Date

July 10, 2020

Last Update Submit

June 13, 2024

Conditions

Keywords

Vitamin Cpainmobilityrotationglenohumeral joint

Outcome Measures

Primary Outcomes (1)

  • Difference between the external glenohumeral joint rotations of the operated shoulder and the opposite shoulder

    The primary endpoint of this study is the difference between the external glenohumeral joint rotations of the operated shoulder and the opposite shoulder ("Delta ∆"). The external glenohumeral joint rotation was chosen as primary measure for shoulder performance because this is the component of movement in the shoulder joint, which is the first and most severely impaired in postoperative shoulder stiffness and which normalizes as the last after the symptomatology subsides. Delta ∆ was chosen as an outcome measure, since the standard deviation of the external rotation capability in the population is very high. The external glenohumeral joint rotation of both shoulders is measured using a smartphone with the App "GetMyROM".

    12 weeks post surgery

Secondary Outcomes (11)

  • Delta ∆ of the external glenohumeral joint rotation

    after 6, 26, and 52 weeks post surgery

  • Delta ∆ of abduction

    after 6, 26, and 52 weeks post surgery

  • Delta ∆ of internal rotation

    after 6, 26, and 52 weeks post surgery

  • Delta ∆ of flexion

    after 6, 26, and 52 weeks post surgery

  • Level of pain

    daily during the first 50 days post surgery, and at 12, 26, and 52 weeks post surgery as a criterion for the occurrence of postoperative frozen shoulder

  • +6 more secondary outcomes

Study Arms (2)

Vitamin C

EXPERIMENTAL

Patients who are assigned to the experimental treatment group will be given extended release capsules with 500 mg of ascorbic acid orally two times daily, packed in PET/PP-bottles identical as used for the licenced product.

Drug: Vitamin C

Placebo

PLACEBO COMPARATOR

The control intervention of this study consists of treatment with no active substance (placebo) but in the same schedule as the experimental treatment (verum).

Drug: Placebo

Interventions

Study participants in the verum group receive one capsule of Burgerstein Vitamin C retard 500mg b.i.d. with treatment starting in the evening on the day of the operation for a total of 50 days.

Vitamin C

The placebo group receives one placebo capsule b.i.d. with treatment starting in the evening on the day of the operation for a total of 50 days.

Placebo

Eligibility Criteria

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

You may qualify if:

  • Informed Consent as documented by signature
  • years or older at the time of informed consent signature
  • Complication-free rotator cuff\* or shoulder arthroscopy\*\* with or without resection of the acromioclavicular joint at the orthopedics Sonnenhof. The rotator cuff operations are basically open or in mini-open technique, usually with additional tenotomy / tenodesis of the long biceps tendon.
  • \* rotator cuff surgery can include tenotomy/tenodesis of long biceps tendon, intra-articular debridement with or without resection of the coracoacromial ligament and/or acromioplasty, biopsies, diagnostic arthroscopy
  • \*\* Arthroscopic procedures include subacromial debridement (including partial resection of the coracoacromial ligament \& acromioplasty), diagnostic arthroscopy, tenotomy of the long biceps tendon, intra-articular debridement, resection of calcium depots for treatment of tendinitis calcarea, biopsies, stabilizations (only without postoperative immobilization)
  • Sufficient knowledge of German to understand the patient information and informed consent, follow instructions by study personnel, and complete patient questionnaires \& diary

You may not qualify if:

  • Contraindications to ascorbic acid or one of the excipients, e.g. known hypersensitivity or allergy to the investigational product
  • Planned single or multiple intake of vitamin supplements during the study period, which results in an additional daily intake of \> 50 mg ascorbic acid
  • Known pregnancy or breast feeding
  • Known or suspected non-compliance, for example drug or alcohol abuse
  • Inability to follow the procedures of the study, e.g. due to psychological disorders, dementia, etc.
  • Participation in another interventional study within the 30 days preceding and during the present study
  • Previous enrollment into the current study
  • Enrollment of the investigator, his / her family members, employees and other dependent persons
  • Current or previous frozen shoulder (no matter on which side)
  • Pre-surgery on the affected shoulder joint (preoperative procedures include all procedures examined in this study, including all other procedures involving the glenohumeral joint and / or acromioclavicular joint. In addition, all interventions, which as a result, negatively influence the mobility of the shoulder with great likelihood up to the current time)
  • Known current unstable medical problem on the not-affected shoulder joint according to the judgment of the investigator
  • Taking a cortisone preparation or an immunomodulatory drug (for example methotrexate or similar)
  • Alcoholism (defined as intake of more than 12g (women) or 24g (men) alcohol per day)
  • Regular hemodialysis
  • Known diabetes mellitus
  • +11 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (2)

Spital Aaberg

Aarberg, Canton of Bern, 3270, Switzerland

Location

Orthopädie Sonnenhof

Bern, Switzerland

Location

Related Publications (25)

  • Cho CH, Song KS, Kim BS, Kim DH, Lho YM. Biological Aspect of Pathophysiology for Frozen Shoulder. Biomed Res Int. 2018 May 24;2018:7274517. doi: 10.1155/2018/7274517. eCollection 2018.

    PMID: 29992159BACKGROUND
  • Wong CK, Levine WN, Deo K, Kesting RS, Mercer EA, Schram GA, Strang BL. Natural history of frozen shoulder: fact or fiction? A systematic review. Physiotherapy. 2017 Mar;103(1):40-47. doi: 10.1016/j.physio.2016.05.009. Epub 2016 Jun 21.

    PMID: 27641499BACKGROUND
  • Kim DH, Kim YS, Kim BS, Sung DH, Song KS, Cho CH. Is frozen shoulder completely resolved at 2 years after the onset of disease? J Orthop Sci. 2020 Mar;25(2):224-228. doi: 10.1016/j.jos.2019.03.011. Epub 2019 Apr 2.

    PMID: 30952550BACKGROUND
  • Aim F, Klouche S, Frison A, Bauer T, Hardy P. Efficacy of vitamin C in preventing complex regional pain syndrome after wrist fracture: A systematic review and meta-analysis. Orthop Traumatol Surg Res. 2017 May;103(3):465-470. doi: 10.1016/j.otsr.2016.12.021. Epub 2017 Mar 4.

    PMID: 28274883BACKGROUND
  • Kim JH, Kim YC, Nahm FS, Lee PB. The Therapeutic Effect of Vitamin C in an Animal Model of Complex Regional Pain Syndrome Produced by Prolonged Hindpaw Ischemia-Reperfusion in Rats. Int J Med Sci. 2017 Jan 15;14(1):97-101. doi: 10.7150/ijms.17681. eCollection 2017.

    PMID: 28138314BACKGROUND
  • Chen S, Roffey DM, Dion CA, Arab A, Wai EK. Effect of Perioperative Vitamin C Supplementation on Postoperative Pain and the Incidence of Chronic Regional Pain Syndrome: A Systematic Review and Meta-Analysis. Clin J Pain. 2016 Feb;32(2):179-85. doi: 10.1097/AJP.0000000000000218.

    PMID: 25654537BACKGROUND
  • Fukushima R, Yamazaki E. Vitamin C requirement in surgical patients. Curr Opin Clin Nutr Metab Care. 2010 Nov;13(6):669-76. doi: 10.1097/MCO.0b013e32833e05bc.

    PMID: 20689415BACKGROUND
  • Behrend H, Lengnick H, Zdravkovic V, Ladurner A, Rudin D, Erschbamer M, Joerger M, Kuster M. Vitamin C demand is increased after total knee arthroplasty: a double-blind placebo-controlled-randomized study. Knee Surg Sports Traumatol Arthrosc. 2019 Apr;27(4):1182-1188. doi: 10.1007/s00167-018-5030-3. Epub 2018 Jun 28.

    PMID: 29955932BACKGROUND
  • Giladi AM, Dossett LA, Fleming SB, Abumrad NN, Cotton BA. High-dose antioxidant administration is associated with a reduction in post-injury complications in critically ill trauma patients. Injury. 2011 Jan;42(1):78-82. doi: 10.1016/j.injury.2010.01.104. Epub 2010 Feb 10.

    PMID: 20149369BACKGROUND
  • Rizzo JA, Rowan MP, Driscoll IR, Chung KK, Friedman BC. Vitamin C in Burn Resuscitation. Crit Care Clin. 2016 Oct;32(4):539-46. doi: 10.1016/j.ccc.2016.06.003. Epub 2016 Aug 2.

    PMID: 27600125BACKGROUND
  • Kleszczewski T, Modzelewska B, Lisowska A, Buzun L, Kleszczewska E. Levels of vitamin C In the blood plasma patients treated with coronary artery bypass grafting increases significantly after surgery. Biomed Pharmacother. 2017 Jan;85:527-530. doi: 10.1016/j.biopha.2016.11.060. Epub 2016 Nov 24.

    PMID: 27890433BACKGROUND
  • Lee GW, Yang HS, Yeom JS, Ahn MW. The Efficacy of Vitamin C on Postoperative Outcomes after Posterior Lumbar Interbody Fusion: A Randomized, Placebo-Controlled Trial. Clin Orthop Surg. 2017 Sep;9(3):317-324. doi: 10.4055/cios.2017.9.3.317. Epub 2017 Aug 4.

    PMID: 28861199BACKGROUND
  • Zollinger PE, Tuinebreijer WE, Breederveld RS, Kreis RW. Can vitamin C prevent complex regional pain syndrome in patients with wrist fractures? A randomized, controlled, multicenter dose-response study. J Bone Joint Surg Am. 2007 Jul;89(7):1424-31. doi: 10.2106/JBJS.F.01147.

    PMID: 17606778BACKGROUND
  • Zollinger PE, Tuinebreijer WE, Kreis RW, Breederveld RS. Effect of vitamin C on frequency of reflex sympathetic dystrophy in wrist fractures: a randomised trial. Lancet. 1999 Dec 11;354(9195):2025-8. doi: 10.1016/S0140-6736(99)03059-7.

    PMID: 10636366BACKGROUND
  • Traxer O, Huet B, Poindexter J, Pak CY, Pearle MS. Effect of ascorbic acid consumption on urinary stone risk factors. J Urol. 2003 Aug;170(2 Pt 1):397-401. doi: 10.1097/01.ju.0000076001.21606.53.

    PMID: 12853784BACKGROUND
  • Thomas LD, Elinder CG, Tiselius HG, Wolk A, Akesson A. Ascorbic acid supplements and kidney stone incidence among men: a prospective study. JAMA Intern Med. 2013 Mar 11;173(5):386-8. doi: 10.1001/jamainternmed.2013.2296. No abstract available.

    PMID: 23381591BACKGROUND
  • Prier M, Carr AC, Baillie N. No Reported Renal Stones with Intravenous Vitamin C Administration: A Prospective Case Series Study. Antioxidants (Basel). 2018 May 21;7(5):68. doi: 10.3390/antiox7050068.

    PMID: 29883396BACKGROUND
  • Mitch WE, Johnson MW, Kirshenbaum JM, Lopez RE. Effect of large oral doses of ascorbic acid on uric acid excretion by normal subjects. Clin Pharmacol Ther. 1981 Mar;29(3):318-21. doi: 10.1038/clpt.1981.42.

    PMID: 7471601BACKGROUND
  • Auer BL, Auer D, Rodgers AL. The effect of ascorbic acid ingestion on the biochemical and physicochemical risk factors associated with calcium oxalate kidney stone formation. Clin Chem Lab Med. 1998 Mar;36(3):143-7. doi: 10.1515/CCLM.1998.027.

    PMID: 9589801BACKGROUND
  • Levine M, Conry-Cantilena C, Wang Y, Welch RW, Washko PW, Dhariwal KR, Park JB, Lazarev A, Graumlich JF, King J, Cantilena LR. Vitamin C pharmacokinetics in healthy volunteers: evidence for a recommended dietary allowance. Proc Natl Acad Sci U S A. 1996 Apr 16;93(8):3704-9. doi: 10.1073/pnas.93.8.3704.

    PMID: 8623000BACKGROUND
  • Padayatty SJ, Levine M. Vitamin C: the known and the unknown and Goldilocks. Oral Dis. 2016 Sep;22(6):463-93. doi: 10.1111/odi.12446. Epub 2016 Apr 14.

    PMID: 26808119BACKGROUND
  • Zhang M, Jativa DF. Vitamin C supplementation in the critically ill: A systematic review and meta-analysis. SAGE Open Med. 2018 Oct 19;6:2050312118807615. doi: 10.1177/2050312118807615. eCollection 2018.

    PMID: 30364374BACKGROUND
  • Gerster H. No contribution of ascorbic acid to renal calcium oxalate stones. Ann Nutr Metab. 1997;41(5):269-82. doi: 10.1159/000177954.

    PMID: 9429689BACKGROUND
  • Zuckerman JD, Rokito A. Frozen shoulder: a consensus definition. J Shoulder Elbow Surg. 2011 Mar;20(2):322-5. doi: 10.1016/j.jse.2010.07.008. Epub 2010 Nov 4.

    PMID: 21051244BACKGROUND
  • Mejia-Hernandez K, Chang A, Eardley-Harris N, Jaarsma R, Gill TK, McLean JM. Smartphone applications for the evaluation of pathologic shoulder range of motion and shoulder scores-a comparative study. JSES Open Access. 2018 Mar 13;2(1):109-114. doi: 10.1016/j.jses.2017.10.001. eCollection 2018 Mar.

    PMID: 30675577BACKGROUND

MeSH Terms

Conditions

Pain

Interventions

Ascorbic Acid

Condition Hierarchy (Ancestors)

Neurologic ManifestationsSigns and SymptomsPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Sugar AcidsAcids, AcyclicCarboxylic AcidsOrganic ChemicalsHydroxy AcidsCarbohydrates

Study Officials

  • Janine Antonov, Dr.

    Campus SLB, Lindenhof AG

    STUDY CHAIR

Study Design

Study Type
interventional
Phase
phase 4
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR
Masking Details
All study participants and trial personnel but the persons generating the randomization list and preparing the blinded drug packs at the Inselapotheke and Spitalapotheke Lindenhof will be blinded to the assigned treatment. Blinding will be upheld until all analyses are completed. Vitamin C and placebo will be provided in identical looking capsules in drug packs, which will also look identical except for the consecutive code number which is unique on each pack.
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Model Details: Participants will be randomly allocated to the two treatment arms, vitamin C or placebo, in a 1:1 ratio. The randomisation will be stratified by type of surgery performed. Allocation will be concealed using sequentially coded drug packs that are otherwise identical. Drug packs will be coded as 01-01 to 01-50 for stratum 1, 02-01 to 02-50 for stratum 2, 03-01 to 03-50 for stratum 3, and 04-01 to 04-50 for stratum 4. The 4 strata differ in the type of operation performed: 1. Rotator cuff surgery with resection of the acromioclavicular joint 2. Rotator cuff surgery without resection of the acromioclavicular joint 3. Shoulder arthroscopy with resection of the acromioclavicular joint 4. Shoulder arthroscopy without resection of the acromioclavicular joint Vitamin C will be administered orally at 1000 mg/day (500 mg b.i.d.) for 50 days post surgery.
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 10, 2020

First Posted

July 15, 2020

Study Start

April 27, 2021

Primary Completion

May 16, 2023

Study Completion

April 21, 2024

Last Updated

June 14, 2024

Record last verified: 2024-06

Data Sharing

IPD Sharing
Will not share

Locations