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Status unknownNCT02638480KneeMDUpdated Feb 8, 2019

Effectiveness of KneeMD on Flexion Contracture in Total Knee Arthroplasty Patients

An interventional study of KneeMD in Flexion Contracture, sponsored by Anne Arundel Health System Research Institute. Status unknown at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2019-02-08.

Sponsored by Anne Arundel Health System Research Institute · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Feb 2019), so the status shown — last known as Active, not recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
100
Allocation
Randomized
Ages
18 Years and older
Sex
All
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Study summary

The purpose of this study is to evaluate the effect of the KneeMD subject-controlled knee rehabilitation device on the incidence of postoperative flexion contracture.

Read the detailed description

Postoperative flexion contracture (FC), defined as >10°, is the most common disabling early complication of primary total knee replacement (TKR) surgery, affecting up to 6% of all subjects. A knee flexion of 65° is required to walk, 70° is needed to lift an object from the floor, 85° to climb stairs, 95° for optimal sitting and standing, and 105° to tie shoelaces. With growing subject and physician expectations for function and range of motion (ROM) after surgery, FC complications have become an early measure of success in TKR surgery.

The purpose of this study is to evaluate the effect of the KneeMD subject-controlled knee rehabilitation device on the incidence of postoperative FC. The primary endpoints are the preoperative change in active range of motion (AROM) and the incidence of postoperative FC at 2 weeks. Secondary endpoints include the change in AROM in subjects with postoperative FC.

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Conditions studied

  • Flexion Contracture

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In context

Contracture

151 studies on the registry are indexed under Contracture; 21 are open to participants now.

This study's planned enrollment of 100 is above the median of 40 across 110 interventional studies indexed under Contracture.

Browse Contracture studies →

Lead sponsor

Anne Arundel Health System Research Institute is the lead sponsor of 6 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Measurable Knee Flexion Contracture, with deficit limiting Active Range of Motion (AROM) and Passive Range of Motion (PROM) by at least - 10°
  2. 18 years of age and older
  3. Able to understand informed consent and willingness to conform to trial responsibilities

Exclusion criteria

Exclusion Criteria:

  1. Previous surgical treatment of knee, including tibial osteotomy
  2. Botulinum Toxin Treatment within the last four months
  3. Mechanical joint impingement
  4. Neuromuscular pathologies such as epilepsy
  5. Treatment with quinolone, antibiotic medication
  6. Pregnant or nursing
  7. Fractures
  8. Osteomyelitis or any orthopedic infection
  9. Extensor mechanism dysfunction
  10. Knee joint neuropathy
  11. Previous Stroke or Brain Injury
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
100 participants (estimated)

Study arms

  • No intervention
    Control

    The control subjects will be treated with only the current SOC including NSAIDs and physical therapy.

  • Experimental
    Experimental

    The experimental subjects will be treated with current SOC and will also use a kneeMD splint 3 times a day for 20 minutes per session

    Device: KneeMD

Interventions

  • DeviceKneeMD

    KneeMD is a subject-controlled knee rehabilita¬tion device that helps subjects who have undergone total knee replacements or other major knee surger¬ies improve range of motion and stretch in extension.

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What researchers measure

Primary outcomes

  1. AROM

    Change in maximal active range of motion in

    Time frame: 4 weeks after randomization

Secondary outcomes

  1. AROM

    Active Range of motion in degrees

    Time frame: 2 weeks postoperatively

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Study locations

1 site
  • Anne Arundel Medical Center
    Annapolis, Maryland 21401, United States
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References and documents

Publications

  • Gonzalez Della Valle A, Leali A, Haas S. Etiology and surgical interventions for stiff total knee replacements. HSS J. 2007 Sep;3(2):182-9. doi: 10.1007/s11420-007-9053-4. PubMed 18751792 ↗
  • Pariente GM, Lombardi AV Jr, Berend KR, Mallory TH, Adams JB. Manipulation with prolonged epidural analgesia for treatment of TKA complicated by arthrofibrosis. Surg Technol Int. 2006;15:221-4. PubMed 17029180 ↗
  • Yercan HS, Sugun TS, Bussiere C, Ait Si Selmi T, Davies A, Neyret P. Stiffness after total knee arthroplasty: prevalence, management and outcomes. Knee. 2006 Mar;13(2):111-7. doi: 10.1016/j.knee.2005.10.001. Epub 2006 Feb 20. PubMed 16490357 ↗
  • Laubenthal KN, Smidt GL, Kettelkamp DB. A quantitative analysis of knee motion during activities of daily living. Phys Ther. 1972 Jan;52(1):34-43. doi: 10.1093/ptj/52.1.34. No abstract available. PubMed 5061683 ↗
  • Schurman DJ, Parker JN, Ornstein D. Total condylar knee replacement. A study of factors influencing range of motion as late as two years after arthroplasty. J Bone Joint Surg Am. 1985 Sep;67(7):1006-14. PubMed 4030819 ↗
  • Mitsuyasu H, Matsuda S, Miura H, Okazaki K, Fukagawa S, Iwamoto Y. Flexion contracture persists if the contracture is more than 15 degrees at 3 months after total knee arthroplasty. J Arthroplasty. 2011 Jun;26(4):639-43. doi: 10.1016/j.arth.2010.04.023. Epub 2010 Jun 11. PubMed 20541887 ↗
  • Ritter MA, Lutgring JD, Davis KE, Berend ME, Pierson JL, Meneghini RM. The role of flexion contracture on outcomes in primary total knee arthroplasty. J Arthroplasty. 2007 Dec;22(8):1092-6. doi: 10.1016/j.arth.2006.11.009. PubMed 18078875 ↗
  • Goudie ST, Deakin AH, Ahmad A, Maheshwari R, Picard F. Flexion contracture following primary total knee arthroplasty: risk factors and outcomes. Orthopedics. 2011 Dec 6;34(12):e855-9. doi: 10.3928/01477447-20111021-18. PubMed 22146201 ↗
  • Aderinto J, Brenkel IJ, Chan P. Natural history of fixed flexion deformity following total knee replacement: a prospective five-year study. J Bone Joint Surg Br. 2005 Jul;87(7):934-6. doi: 10.1302/0301-620X.87B7.15586. PubMed 15972905 ↗
  • Lam LO, Swift S, Shakespeare D. Fixed flexion deformity and flexion after knee arthroplasty. What happens in the first 12 months after surgery and can a poor outcome be predicted? Knee. 2003 Jun;10(2):181-5. doi: 10.1016/s0968-0160(02)00102-3. PubMed 12788004 ↗
  • Koh IJ, Chang CB, Kang YG, Seong SC, Kim TK. Incidence, predictors, and effects of residual flexion contracture on clinical outcomes of total knee arthroplasty. J Arthroplasty. 2013 Apr;28(4):585-90. doi: 10.1016/j.arth.2012.07.014. Epub 2012 Nov 8. PubMed 23142447 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 8, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT02638480
Lead sponsor
Anne Arundel Health System Research Institute
Responsible party
Sponsor
First posted
Dec 23, 2015
Start date
Nov 2015
Primary completion
Mar 2019 (estimated)
Completion
Apr 2019 (estimated)
Last update
Feb 8, 2019

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Feb 2019. You cannot join it, but the record below documents what was studied.

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