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Radiologic Evaluation of Compressive Osseointegration for the Fixation of Reconstruction Prostheses after Tumor Resection.

Lazarov M, De Bo T, Poffyn B, Sys G - Biomed Res Int (2015)

Bottom Line: There were no significant differences between the two cohorts.Group 2, which was significantly younger than group 1 (p < 0.001), presented a delayed initial rate of bone formation and reached stage 1 at 6 months instead of 3 months like group 1.Despite the fact that the staging fails to demonstrate a statistical difference, it is rather simple and can be used for future studies.

View Article: PubMed Central - PubMed

Affiliation: Department of Orthopaedics, University Hospital Ghent, De Pintelaan 185, 9000 Ghent, Belgium.

ABSTRACT

Objective: In pursuance of thoroughly understanding and facilitating the evaluation of the radiological changes in the preloaded bone by Compliant Pre-Stress osseointegration (Compress Biomet, Warsaw, Indiana) a new staging method was created depicting four stages.

Methods: Two cohorts (10 and 17 patients resp., not-receiving and receiving chemotherapy) were compared in terms of progression of osseointegration. Based on the changes at the bone-metal interface seen on röntgenorgrams four stages were defined: stage 0: immediate postoperative status, no ingrowth, or noncalcified callus; stage 1: early mineralization, calcified callus; stage 2: mature mineralization; and stage 3: hypertrophy at the level of the pins.

Results: There were no significant differences between the two cohorts. Group 2, which was significantly younger than group 1 (p < 0.001), presented a delayed initial rate of bone formation and reached stage 1 at 6 months instead of 3 months like group 1. The children from the group 2 demonstrated a visible rebound ingrowth.

Conclusion: Despite the fact that the staging fails to demonstrate a statistical difference, it is rather simple and can be used for future studies.

No MeSH data available.


Related in: MedlinePlus

(a) and (b) Radiolucent line in the compress area after falling 1 y postop, (c) and (d) development of angulation and loss of distance between the anchor plug and the spindle can be observed after fracture (d) healing when compared to the prefracture X-ray (c). At 18 months stage 3 has not been reached (d).
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fig2: (a) and (b) Radiolucent line in the compress area after falling 1 y postop, (c) and (d) development of angulation and loss of distance between the anchor plug and the spindle can be observed after fracture (d) healing when compared to the prefracture X-ray (c). At 18 months stage 3 has not been reached (d).

Mentions: Furthermore during the radiographic evaluation signs of loosening were sought as previously suggested in literature [6] fracture, transverse pin migration, and progressive radiolucency at the bone-prosthetic interface. The length of the visible part of the traction bar was measured and also the angle between the anchor and the spindle in order to exclude collapse, indicating loss of compression force. A fracture line was seen in this area in one patient after a fall at home one year after surgery. A diminished distance as well as an angulation between the spindle and the anchor plug was noted (Figure 2). The patient was closely observed: no fracture displacement was seen after one year, but the radiographic assessment showed no progression from stage 2 to stage 3.


Radiologic Evaluation of Compressive Osseointegration for the Fixation of Reconstruction Prostheses after Tumor Resection.

Lazarov M, De Bo T, Poffyn B, Sys G - Biomed Res Int (2015)

(a) and (b) Radiolucent line in the compress area after falling 1 y postop, (c) and (d) development of angulation and loss of distance between the anchor plug and the spindle can be observed after fracture (d) healing when compared to the prefracture X-ray (c). At 18 months stage 3 has not been reached (d).
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4525760&req=5

fig2: (a) and (b) Radiolucent line in the compress area after falling 1 y postop, (c) and (d) development of angulation and loss of distance between the anchor plug and the spindle can be observed after fracture (d) healing when compared to the prefracture X-ray (c). At 18 months stage 3 has not been reached (d).
Mentions: Furthermore during the radiographic evaluation signs of loosening were sought as previously suggested in literature [6] fracture, transverse pin migration, and progressive radiolucency at the bone-prosthetic interface. The length of the visible part of the traction bar was measured and also the angle between the anchor and the spindle in order to exclude collapse, indicating loss of compression force. A fracture line was seen in this area in one patient after a fall at home one year after surgery. A diminished distance as well as an angulation between the spindle and the anchor plug was noted (Figure 2). The patient was closely observed: no fracture displacement was seen after one year, but the radiographic assessment showed no progression from stage 2 to stage 3.

Bottom Line: There were no significant differences between the two cohorts.Group 2, which was significantly younger than group 1 (p < 0.001), presented a delayed initial rate of bone formation and reached stage 1 at 6 months instead of 3 months like group 1.Despite the fact that the staging fails to demonstrate a statistical difference, it is rather simple and can be used for future studies.

View Article: PubMed Central - PubMed

Affiliation: Department of Orthopaedics, University Hospital Ghent, De Pintelaan 185, 9000 Ghent, Belgium.

ABSTRACT

Objective: In pursuance of thoroughly understanding and facilitating the evaluation of the radiological changes in the preloaded bone by Compliant Pre-Stress osseointegration (Compress Biomet, Warsaw, Indiana) a new staging method was created depicting four stages.

Methods: Two cohorts (10 and 17 patients resp., not-receiving and receiving chemotherapy) were compared in terms of progression of osseointegration. Based on the changes at the bone-metal interface seen on röntgenorgrams four stages were defined: stage 0: immediate postoperative status, no ingrowth, or noncalcified callus; stage 1: early mineralization, calcified callus; stage 2: mature mineralization; and stage 3: hypertrophy at the level of the pins.

Results: There were no significant differences between the two cohorts. Group 2, which was significantly younger than group 1 (p < 0.001), presented a delayed initial rate of bone formation and reached stage 1 at 6 months instead of 3 months like group 1. The children from the group 2 demonstrated a visible rebound ingrowth.

Conclusion: Despite the fact that the staging fails to demonstrate a statistical difference, it is rather simple and can be used for future studies.

No MeSH data available.


Related in: MedlinePlus