Tags

Type your tag names separated by a space and hit enter

Does migration of osseointegrated implants for transfemoral amputees predict later revision? A prospective 2-year radiostereometric analysis with 5-years clinical follow-up.
Orthop Traumatol Surg Res 2019; 105(5):1013-1020OT

Abstract

BACKGROUND

The osseointegrated (OI) prosthesis is a treatment option for transfemoral amputees with a short residual femur and/or difficulties caused by using the prosthetic socket. Implant removal due to aseptic or septic loosening is not uncommon, but the association between implant migration patterns and the need for removal has not previously been studied. We conducted a prospective model-based radiostereometric analysis study to investigate: if the OI implant migration pattern 1) differs between later removed implants and non-removed implants, (2) predicts later implant removal, and (3) if the precision of the method is acceptable.

HYPOTHESIS

Model-based radiostereometric analysis of the OI implant migration pattern can be used to predict later OI implant removal.

MATERIAL AND METHODS

A prospective cohort of 17 consecutive transfemoral amputees suitable for surgery (11 males), mean age 50 (range 32-66) were treated with an OI implant (Integrum AB, Sweden). Postoperative stereoradiographs of the OI implant were obtained during 24-month follow-up. X, Y, and Z translations and total translations were evaluated using CAD-implant models. Implant survival was followed for up to 60 months.

RESULTS

Six total implant removals (fixture and abutment) and four partial removals (abutment) were conducted (10/17 (59%)), and one patient did not use the OI implant. The removed implants group migrated a mean (±standard deviation) 0.55mm±0.75mm (p=0.009) and the non-removed implants group migrated 0.31mm±0.51mm (p=0.22) in total translations from 3 months to last follow-up. Odds ratio for implant removal was 22.5 (95% CI: 1.6 to 314 (p=0.021)) if the OI implants migrated distally.

CONCLUSION

Later removed OI implants migrated from 3 months to last follow-up and more than the non-removed OI implants. Distal implant migration greatly increased the odds of implant removal. Ten out of 17 OI implants were removed within 5 years of follow-up. We advise to use OI implants with caution and close follow-up in consideration of the risk of complications.

LEVEL OF EVIDENCE

IV, Prospective study.

Authors+Show Affiliations

Orthopedic Research Unit, University Hospital of Aarhus, Palle Juul-Jensens boulevard 99, 8200 Aarhus N, Denmark; Department of Orthopedic Surgery, University Hospital of Aarhus, Palle Juul-Jensens boulevard 99, 8200 Aarhus N, Denmark. Electronic address: rlha@clin.au.dk.Department of Endocrinology and Internal Medicine, University Hospital of Aarhus, Palle Juul-Jensens boulevard 99, 8200 Aarhus N, Denmark.Department of Orthopedic Surgery, University Hospital of Aarhus, Palle Juul-Jensens boulevard 99, 8200 Aarhus N, Denmark.Department of Orthopedic Surgery, University Hospital of Aarhus, Palle Juul-Jensens boulevard 99, 8200 Aarhus N, Denmark.Orthopedic Research Unit, University Hospital of Aarhus, Palle Juul-Jensens boulevard 99, 8200 Aarhus N, Denmark; Department of Orthopedic Surgery, University Hospital of Aarhus, Palle Juul-Jensens boulevard 99, 8200 Aarhus N, Denmark; Department of Clinical Medicine, Aarhus University, Incuba/Skejby, Building 2, Palle Juul-Jensens boulevard 82, 8200 Aarhus N, Denmark.Orthopedic Research Unit, University Hospital of Aarhus, Palle Juul-Jensens boulevard 99, 8200 Aarhus N, Denmark; Department of Orthopedic Surgery, University Hospital of Aarhus, Palle Juul-Jensens boulevard 99, 8200 Aarhus N, Denmark; Department of Clinical Medicine, Aarhus University, Incuba/Skejby, Building 2, Palle Juul-Jensens boulevard 82, 8200 Aarhus N, Denmark.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31255502

Citation

Hansen, Rehne Lessmann, et al. "Does Migration of Osseointegrated Implants for Transfemoral Amputees Predict Later Revision? a Prospective 2-year Radiostereometric Analysis With 5-years Clinical Follow-up." Orthopaedics & Traumatology, Surgery & Research : OTSR, vol. 105, no. 5, 2019, pp. 1013-1020.
Hansen RL, Langdahl BL, Jørgensen PH, et al. Does migration of osseointegrated implants for transfemoral amputees predict later revision? A prospective 2-year radiostereometric analysis with 5-years clinical follow-up. Orthop Traumatol Surg Res. 2019;105(5):1013-1020.
Hansen, R. L., Langdahl, B. L., Jørgensen, P. H., Petersen, K. K., Søballe, K., & Stilling, M. (2019). Does migration of osseointegrated implants for transfemoral amputees predict later revision? A prospective 2-year radiostereometric analysis with 5-years clinical follow-up. Orthopaedics & Traumatology, Surgery & Research : OTSR, 105(5), pp. 1013-1020. doi:10.1016/j.otsr.2019.05.010.
Hansen RL, et al. Does Migration of Osseointegrated Implants for Transfemoral Amputees Predict Later Revision? a Prospective 2-year Radiostereometric Analysis With 5-years Clinical Follow-up. Orthop Traumatol Surg Res. 2019;105(5):1013-1020. PubMed PMID: 31255502.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Does migration of osseointegrated implants for transfemoral amputees predict later revision? A prospective 2-year radiostereometric analysis with 5-years clinical follow-up. AU - Hansen,Rehne Lessmann, AU - Langdahl,Bente Lomholt, AU - Jørgensen,Peter Holmberg, AU - Petersen,Klaus Kjær, AU - Søballe,Kjeld, AU - Stilling,Maiken, Y1 - 2019/06/27/ PY - 2018/12/13/received PY - 2019/05/14/revised PY - 2019/05/27/accepted PY - 2019/7/1/pubmed PY - 2019/7/1/medline PY - 2019/7/1/entrez KW - Osseointegration Radiostereometric analysis transfemoral amputation SP - 1013 EP - 1020 JF - Orthopaedics & traumatology, surgery & research : OTSR JO - Orthop Traumatol Surg Res VL - 105 IS - 5 N2 - BACKGROUND: The osseointegrated (OI) prosthesis is a treatment option for transfemoral amputees with a short residual femur and/or difficulties caused by using the prosthetic socket. Implant removal due to aseptic or septic loosening is not uncommon, but the association between implant migration patterns and the need for removal has not previously been studied. We conducted a prospective model-based radiostereometric analysis study to investigate: if the OI implant migration pattern 1) differs between later removed implants and non-removed implants, (2) predicts later implant removal, and (3) if the precision of the method is acceptable. HYPOTHESIS: Model-based radiostereometric analysis of the OI implant migration pattern can be used to predict later OI implant removal. MATERIAL AND METHODS: A prospective cohort of 17 consecutive transfemoral amputees suitable for surgery (11 males), mean age 50 (range 32-66) were treated with an OI implant (Integrum AB, Sweden). Postoperative stereoradiographs of the OI implant were obtained during 24-month follow-up. X, Y, and Z translations and total translations were evaluated using CAD-implant models. Implant survival was followed for up to 60 months. RESULTS: Six total implant removals (fixture and abutment) and four partial removals (abutment) were conducted (10/17 (59%)), and one patient did not use the OI implant. The removed implants group migrated a mean (±standard deviation) 0.55mm±0.75mm (p=0.009) and the non-removed implants group migrated 0.31mm±0.51mm (p=0.22) in total translations from 3 months to last follow-up. Odds ratio for implant removal was 22.5 (95% CI: 1.6 to 314 (p=0.021)) if the OI implants migrated distally. CONCLUSION: Later removed OI implants migrated from 3 months to last follow-up and more than the non-removed OI implants. Distal implant migration greatly increased the odds of implant removal. Ten out of 17 OI implants were removed within 5 years of follow-up. We advise to use OI implants with caution and close follow-up in consideration of the risk of complications. LEVEL OF EVIDENCE: IV, Prospective study. SN - 1877-0568 UR - https://www.unboundmedicine.com/medline/citation/31255502/Does_migration_of_osseointegrated_implants_for_transfemoral_amputees_predict_later_revision_A_prospective_2-year_radiostereometric_analysis_with_5-years_clinical_follow-up L2 - https://linkinghub.elsevier.com/retrieve/pii/S1877-0568(19)30182-3 DB - PRIME DP - Unbound Medicine ER -