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Functional Outcomes of Knee Protheses for Malignant Tumours of Bone

Clinical Results, Isokinetic Analysis and Radiologic Outcomes of Knee MUTARS Protheses Replacement for Malignant Tumours of Bone

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04650594
Acronym
ISOMUTAR
Enrollment
9
Registered
2020-12-02
Start date
2021-07-01
Completion date
2021-11-21
Last updated
2026-04-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bone Cancer, Knee Disease

Keywords

Tumour, prosthese replacement, functional outcomes, knee, isokinetic

Brief summary

The placement of mega knee prosthesis is a necessity after a large tumor resection and oncological. These mega knee prostheses implanted in the context of oncological surgery have been very few evaluated in the literature. Active knee extension is essential in order to walk properly. The study propose the evaluation of this prosthesis by checking the possibility of locking of the prosthetic joint and thus the possibility of active walking. A more in-depth, isokinetic analysis at 1 year of follow-up will also be done in an exploratory manner, as the literature has no data on this subject.

Interventions

PROCEDUREMUTARS® modular reconstruction prostheses

Patients with MUTARS® modular reconstruction prostheses following primary or secondary knee bone malignancy with minimal follow-up of one year

Sponsors

University Hospital, Lille
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patient with MUTARS® modular reconstruction prostheses following primary or secondary knee bone malignancy with minimal follow-up of one year, * Cardiological follow-up including at least one ECG and a clinical examination of less than 1 year (ability to perform the isokinetic test), * Written informed consent from patient, * Socially insured patient, * Patient willing to comply with all study procedures and study duration.

Exclusion criteria

* \- Underage, * Less than a one-year follow-up after surgery (stability of results is not achieved if follow-up is less than one year), * Meniscal lesion knee healthy side, * Prosthetic surgery of the knee healthy side, * Patient with an unbound fracture, * Patient without cardiological follow-up, * Pregnant or breastfeeding woman, * Inability to receive information, consent and participate in the whole study, * No social insurance cover, * No written consent, * Person under judicial protection or deprived of liberty.

Design outcomes

Primary

MeasureTime frameDescription
Rate of patients with active locking of the operated kneeBaselinerate of patients with successful locking will be estimated by the frequency observed Active locking of the operated knee

Secondary

MeasureTime frameDescription
Measurement of joint amplitudesBaselineFunctional results of patients with medullary reconstruction prosthesis,joint amplitudes in flexion-extension and in active, passive,
Presence of frontal and sagittal laxityBaselineFunctional results of patients with medullary reconstruction prosthesis
Musculoskeletal Tumour Society Scoring System (MSTS)BaselineThe MSTS Score may be used as a functional measure for patients with sarcoma involving the upper limb. The score includes 6 measures (pain, function, emotional acceptance, hand position, manual dexterity, lifting ability) each measure with a maximum of 5 points. The maximum overall score is 30 points. The score is designed to be used after the procedure and is therefore only collected post-operatively.
Oxford knee scoreBaselineThe Oxford Knee Score (OKS) is a Patient Reported Outcome questionnaire that was developed to specifically assess the patient's perspective of outcome following Total Knee Arthroplasty. Each of the 12 answers are assigned the previously defined number of points. They range from 1 = least difficult to 5 = most difficult. The 12 ratings are then added together to give a total score used to assess the patient. Functional results of patients with medullary reconstruction prosthesis
KOOS for the daily impact (subjective score)BaselineThe Knee injury and Osteoarthritis Outcome Score (KOOS) is a patient-reported outcome measurement instrument, developed to assess the patient's opinion about their knee and associated problems Functional results of patients with medullary reconstruction prosthesis
International Knee Society (IKS) scoreBaselineInternational Knee Society score : range 0 to 200, a higher score means a better outcome Functional results of patients with medullary reconstruction prosthesis
Radiological evaluationBaselineRadiological results of patients with medullary reconstruction prosthesis Radiological criterion : Lower limb axis,Blackburn and Peel index for patellar height, Radiological signs of loosening
Isokinetic strength of the quadriceps and ischio-leg muscles during knee flexion and extension by isokinetic machine type Contrex®.BaselineMuscle recovery of the operated limb compared to the healthy limb
The test angular velocities are 60°/s and 180°/s in concentric contraction mode by isokinetic machine type Contrex®.BaselineMuscle recovery of the operated limb compared to the healthy limb .

Countries

France

Contacts

PRINCIPAL_INVESTIGATORChristophe Szymanski, MD

University Hospital, Lille

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 22, 2026