About this trial
The objective of the study is to evaluate the preoperative bone quality assessment based on CT to later establish a scale for the decision of stemless shoulder arthroplasty.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Patient must be older than 18 years and skeletally mature.
Patient must undergo the SHA, TSA, or RSA according to the Instructions for Use (IFU).
Patient must be anatomically and structurally suited to receive shoulder arthroplasty implants.
Non-inflammatory degenerative joint disease including osteoarthritis.
Disqualifiers
Fractures of the proximal humerus, where other methods of treatment are deemed inadequate.
Revision TSA/RSA after the prior TSA/RSA.
Patient has experienced the traumatic fractures to the implant site.
Patient is unwilling or unable to give consent
Trial design
Single group
Treatments tested in this trial
Preoperative CT Scan
RadiationPreoperative CT Scan including a bone density calibration phantom. This data will be compared with surgeon intra-operative CRF responses.
Treatment groups
Trial outcomes
Primary outcomes
CT scan data acquisition
The primary endpoint is the collection of the preoperative CT scan with a calibration phantom at each site and the surgeon's intraoperative evaluation of bone quality.
Intra-op bone quality evaluation: Thumb Test
The first test is the Thumb test that occurs just after the head resection. The surgeon presses his/her thumb on the resected humeral surface to assess bone quality. If he can depress the thumb into the humerus without much resistance, then primary stability of the stemless implant may be insufficient.
Intra-op bone quality evaluation: Pin Test
The second test is the Pin test where the central pin used to position the trial head is wiggled to assess bone quality. If the central pin is unstable in the humerus, then this may indicate that the bone is soft/weak.
Intra-op bone quality evaluation: Broach Test
The third test is the Broach (or Puncher test) where the impactor is wiggled to assess bone quality. If the puncher is unstable after impaction, then the bone is soft/weak, and a stemmed prosthesis is recommended.
Other outcomes
Functional Performance (Optional): Constant & Murley Score
The Constant \& Murley Score (CMS) is a multi-item functional scale assessing pain, ADL, ROM and strength of the affected shoulder. Its score ranges from 0 to 100 points, representing worst and best shoulder function, respectively.
Sponsors and contacts
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Zimmer Biomet
Lead sponsor
Zimmer, GmbH
Collaborator
This trial is not recruiting at the moment. You can still explore other options: