Table 4.
Modes of failure and complications after upper extremity compressive endoprosthetic reconstruction
| Patient number | CPS bone | Mode of CPS failure | Timing of CPS failure (months) | Other mechanical failures | Other complications |
|---|---|---|---|---|---|
| 1 | DH | None | N/A | None | Transient radial nerve palsy |
| 2 | DH | None | N/A | Type 2 (aseptic loosening) standard ulnar component–revised to CPS | None |
| PU | Type 3 (structural) fracture of ulnar traction bar, periprosthetic fracture | 6 | None | None | |
| PU | None | N/A | None | None | |
| 3 | DH | None | N/A | None | None |
| 4 | DH | None | N/A | Type 3 (structural) bushing exchange | Ulnar nerve distribution numbness |
| 5 | DH | None | N/A | None | None |
| 6 | PH | None | N/A | None | Superficial infection, inferior glenohumeral subluxation |
| 7 | PH | None | N/A | Type 4 (deep infection) | None |
| Type 1 (glenohumeral instability) | |||||
| 8 | DH | Type 3 (structural) deficient bone, failure of fixation | 5 | None | None |
| DH | None | N/A | None | None | |
| 9 | HD HD |
None None |
N/A N/A |
None None |
None None |
CPS = Compress® Compliant Pre-stress Device; DH = distal humerus; PH = proximal humerus; PU = proximal ulna; HD = humeral diaphysis, N/A = not applicable.