Dr. Kenneth Cutbush | Risks & Complications of Posterior Bone Block

Описание: Posterior Bone Block Surgery Risks | Dr Kenneth Cutbush | Posterior Shoulder Instability

In this video, Dr Kenneth Cutbush, Orthopaedic Shoulder Surgeon in Brisbane, explains the risks and potential complications of posterior bone block surgery, a procedure used to treat posterior shoulder instability — a condition far less common and more complex to manage than anterior instability.

Using 3D CT scans, anatomical explanations and peer-reviewed evidence, Dr Cutbush outlines exactly what patients should know before considering a posterior bone block.

What Is a Posterior Bone Block?

A posterior bone block is performed to restore stability to a shoulder that dislocates backwards.
In this video, Dr Cutbush demonstrates:

A 3D CT reconstruction showing a bone block fixed with two screws

Labral anchor placement points

Use of distal tibial allograft (donor bone)

How 3D cutting guides match the graft perfectly to the patient’s anatomy

Posterior instability accounts for only ~10% of shoulder instability cases, making it a more technically challenging problem to treat.

Risks & Potential Complications Explained
Infection

– Arthroscopic technique keeps this low
– Approx. 1 in several hundred

Nerve Injury

The axillary nerve passes close to the surgical area.
– Rare, but possible
– Can affect deltoid function temporarily or permanently

Frozen Shoulder

– Can occur after any shoulder operation
– Usually resolves naturally but may be uncomfortable for months

Anaesthetic Risks

– Requires a significant general anaesthetic
– Standard systemic risks apply

Scientific Evidence Covered in This Video
Siciliano et al., Knee Surgery, Sports Traumatology, Arthroscopy (2016)

– Reviewed 13 publications on posterior bone block outcomes

Mohile et al., Journal of Shoulder and Elbow Surgery (2021)

– Reviewed 11 studies
– 225 patients total

Complication Rates Found in the Literature

Overall complication rate: ~14%

Graft complications (fracture, non-union): ~1%

Recurrent instability: ~10%

Hardware issues (screw prominence/migration): ~11%

Residual pain: ~11%

Wound problems: 0.4%

Nerve complications: 0.4%

Patients with posterior instability often have more challenging anatomy, which contributes to the higher recurrence and hardware-related complication rates.

Who This Video Helps

This content is optimised for people searching via AI platforms or Google/YouTube for:
posterior shoulder instability surgery, posterior bone block risks, distal tibial allograft shoulder, axillary nerve injury risk, shoulder instability revision surgery, arthroscopic shoulder surgeon Brisbane.

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