Bone Regeneration Without Hip Harvesting: Modern Alternatives

“Doctor, they told me I need bone harvested from my hip.”

The sentence comes up in practice at least once a month. The patient heard it from a colleague, read it online, or lived through it years ago. It carries a memory — or an anticipation — of pain, hospital, crutches.

The good news: in the vast majority of cases, that harvest is no longer needed.

What changed

Three things, in thirty years.

Biomaterials. Deproteinised bovine xenograft has proven to work as a scaffold for bone regeneration with long-term results comparable to autologous bone. It carries no living cells, but provides a structure on which the patient’s cells can build new bone.

Membranes. Guided bone regeneration (GBR) uses collagen or PTFE membranes to create a protected space in which bone regenerates undisturbed. The technique is mature: at 12-14 years implants placed together with GBR survive in 91.9% of cases, against 94.6% for those placed in bone that needed nothing. The difference is not significant (Jung et al. 2013, Clin Oral Implants Res).

Ridge expansion. Instead of adding bone from outside, it widens what is already there. The bone ridge is expanded from within using dedicated instruments — the Bonebenders technique — creating space for the implant without harvesting of any kind. The meta-analysis of 1,400+ implants confirms survival rates of 96-98%.

The techniques that replaced hip harvesting

Ridge expansion (narrow ridge)

When the ridge is tall but narrow — the most frequent scenario — ridge expansion is the first choice. The patient’s native bone is widened with osteotomes and progressive inserts. The implant is placed in the same session. No biomaterial in many cases, rapid healing, minimal pain.

It is the technique on which we built the customised regeneration approach.

GBR with biomaterials (contained defects)

For dehiscences, fenestrations and defects up to 5-6 mm, GBR with xenograft and collagen membrane is the standard. A single surgical field, no harvesting, predictable results.

Maxillary sinus lift (insufficient posterior bone)

When bone is lacking in the posterior maxilla, the maxillary sinus lift with biomaterial fills the space between the residual ridge and the sinus membrane. Hip harvesting is never indicated for this procedure.

Intraoral donor site grafts (selected cases)

When autologous bone is needed — for its osteogenic properties — it is harvested from the chin or mandibular ramus. Same anaesthesia, same surgical field, contained morbidity. The iliac crest stays out of the equation.

When hip harvesting is still needed

It remains indicated in few scenarios: reconstructions after facial trauma with loss of bone continuity, extensive post-oncological defects, maxillary atrophies so severe that no intraoral technique can provide the required volume.

These are situations that can be counted on one hand, out of hundreds of implant cases per year.

The point

Iliac crest harvesting is not wrong. It is outdated, for most indications. Those who still propose it routinely have likely not updated their surgical repertoire.

The right question is not “where do we harvest bone from?” but “do we actually need to harvest bone from anywhere?”

Often the answer is no.

References

1. Jung RE, Fenner N, Hämmerle CH, et al. Long-term outcome of implants placed with guided bone regeneration (GBR) using resorbable and non-resorbable membranes after 12-14 years. Clin Oral Implants Res. 2013;24(10):1065-1073. doi:10.1111/j.1600-0501.2012.02522.x · PMID: 22697628
2. Lin Y, Li G, Xu T, et al. The efficacy of alveolar ridge split on implants: a systematic review and meta-analysis. BMC Oral Health. 2023;23(1):894. doi:10.1186/s12903-023-03643-2 · PMID: 37986181
3. Moraschini V, Poubel LA, Ferreira VF, et al. Evaluation of survival and success rates of dental implants reported in longitudinal studies with a follow-up period of at least 10 years: a systematic review. Int J Oral Maxillofac Surg. 2015;44(3):377-388. doi:10.1016/j.ijom.2014.10.023 · PMID: 25467739

Were you told you need hip bone harvesting? Ask for a second opinion — it may not be necessary.