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Comparison of Individual Computer Aided Design/Manufactured (CAD/CAM) - Based Implants Consisting on Hydroxylapatite and Titanium to be Used in Cranioplasty

This study has been terminated.
(Recruitment was stopped, due to slow recruitment rate)
Universitätsklinikum Leipzig
Information provided by (Responsible Party):
Dirk Lindner, University of Leipzig Identifier:
First received: June 17, 2009
Last updated: May 20, 2015
Last verified: May 2015
The purpose of this study is to compare the results of cranioplasty with CAD/CAM (computer aided design/manufactured) based Hydroxylapatite and Titanium implants in respect to infections, re-operations, antibiotic treatment or removal of the implant.

Condition Intervention Phase
Skull Defects
Device: Titanium implant (CranioConstruct™)
Device: Hydroxylapatite (CustomBone)
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Comparison of Individual CAD/CAM-based Implants Consisting on Hydroxylapatite and Titanium to be Used in Cranioplasty - a Randomized Multicenter Clinical Trial

Resource links provided by NLM:

Further study details as provided by University of Leipzig:

Primary Outcome Measures:
  • Comparison of the rate of local and/or systemic infections (acute/chronic) in both study arms within the first 6 months after operation. [ Time Frame: 6 months ]

Secondary Outcome Measures:
  • Comparison of the rate of re-operations with and without ex-plantation of the implant in both arms. [ Time Frame: 6 months ]
  • Comparison of post-operative computer tomography (CT) (native and bone 5 mm) within 48 h in respect to bleeding, dislocation and further complications after cranioplasty in both arms. [ Time Frame: 48 hours post-operative ]
  • Comparison of health-related quality of life after cranioplasty in both arms using the SF36-questionnaire. [ Time Frame: 6 months ]
  • Comparison between both groups referring to cosmetic result, period of hospitalization, costs, intra-operative features. [ Time Frame: 6 months ]
  • Comparison of temperature sensitivity (cold/heat) six months after implantation in both groups. [ Time Frame: 6 months ]
  • Description of osteointegration with CT and bone scan six months post-operative in both groups [ Time Frame: 6 months ]

Enrollment: 53
Study Start Date: June 2009
Study Completion Date: April 2014
Primary Completion Date: April 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Titanium
Titanium implant for cranioplasty. Titanium implants are used since 10 years in Germany because of their high biocompatibility and accuracy of fit.
Device: Titanium implant (CranioConstruct™)
One to three weeks before operation the skull defect is well defined using Computer tomography. Based on these results the Titanium implant is ordered.
Other Name: CranioConstruct™
Experimental: Hydroxylapatite
Hydroxylapatite (CustomBone) implant Hydroxylapatite implants are used since about 3 years in Germany. As this material is very similar to human bone structure an improved osteointegration has been observed.
Device: Hydroxylapatite (CustomBone)
Six to eight weeks before operation the skull defect is well defined using Computer tomography. Based on these results the Hydroxylapatite implant is ordered.
Other Name: CustomBone

Detailed Description:
Both implant materials for cranioplasty, Hydroxylapatite and Titanium, are CE certified medical devices used in common practices. This study is intended to get prospective data in addition to the empirical and retrospective existing ones to enable the decision on which implant material should be preferably employed in future.

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Skull defects without the possibility to be covered with the missing own bone
  2. Size of the defect ≥ 16 cm2
  3. Age ≥ 18
  4. Written informed consent of the patient

Exclusion Criteria:

  1. Active tumor
  2. ASA 4 classification
  3. Allergic disposition to ceramic or titanium
  4. Concomitant participation in other clinical trials
  5. Pregnant or nursing women
  6. Expected low compliance
  7. HIV positive
  8. Active drug abuses
  Contacts and Locations
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Please refer to this study by its identifier: NCT00923793

Universität Leipzig KöR Medizinische Fakultät Klinik für Neurochirurgie
Leipzig, Sachsen, Germany, 04107
Sponsors and Collaborators
University of Leipzig
Universitätsklinikum Leipzig
Study Director: Dirk Lindner, Dr. med. Universität Leipzig KöR Medizinische Falkutät Klinif für Neurochirurgie
  More Information

Eufinger H, Weihe S, Scherer P, Rasche C, Wehmöller M. Management of cranial and craniofacial bone defects with prefabricated individual titanium implants: follow-up and evaluation of 166 patients with 169 titanium implants from 1994 to 2000. Int. J. CARS 2006; 1: 197-203

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Dirk Lindner, Dr., University of Leipzig Identifier: NCT00923793     History of Changes
Other Study ID Numbers: CustomBone vs. Titanium
Study First Received: June 17, 2009
Last Updated: May 20, 2015

Keywords provided by University of Leipzig:
skull defects
Hydroxylapatite implant
Titanium implant
calotte defects without the possibility to be covered with the missing own bone processed this record on May 24, 2017