Mr Josh LambConsultant Hip & Knee Surgeon

Research and publications

My research uses national registry data, laboratory testing and clinical studies to understand why joint replacements go wrong and how to choose implants that last.

Registry analyses are carried out under the National Joint Registry’s research arrangements. The views are mine and do not necessarily reflect those of the NJR Steering Committee or HQIP.

Main themes

Notable papers

A calcar collar is protective against early periprosthetic femoral fracture around cementless femoral components in primary total hip arthroplasty: a registry study with biomechanical validation

Bone Joint J 2019

In plain English: A collar on a cementless thigh-bone implant protected against fractures around it early after surgery.

The association between implant design, age, sex and the rate of major reoperation in patients undergoing primary total hip replacement: A retrospective study of UK National Joint Registry and Hospital Episodes Statistics data

PLoS Med 2025

In plain English: Counting only operations to replace a hip implant misses many patients who need other major surgery, most often to fix a break in the thigh bone. Including these changes which implants look best.

Total hip arthroplasty in adolescent patients delivers large improvements in hip function and quality of life : a single-centre cohort study with up to 34 years of follow-up

Bone Joint J 2025

In plain English: Hip replacement in teenagers at Wrightington, followed for up to 34 years, gave large improvements in everyday function and quality of life.

Prevention of Periprosthetic Fractures: What Should We Be Doing to Address This Impending Epidemic?

J Bone Joint Surg Am 2026

In plain English: Fractures around hip replacements are becoming more common as more people live longer with them. This review sets out what surgeons can do now, especially in implant choice, to prevent them.

Recent

Top 10 priorities for problematic hip replacement research: a priority setting partnership led by the British Hip Society and the James Lind Alliance

BMJ Open 2026

In plain English: Patients, carers and clinicians worked together to agree the ten most important unanswered questions about hip replacements that cause problems, to steer future research.

The Risk of Postoperative Periprosthetic Femoral Fracture After Total Hip Arthroplasty Depends More on Stem Design Than Cement Use: An Analysis of National Health Data from England

J Bone Joint Surg Am 2025

In plain English: Across 800,000 hip replacements in England, the shape of the thigh-bone implant mattered more than whether it was cemented in deciding the risk of a later fracture around it.

All publications (41)

Talks and papers reflect the evidence and my view at the time they were given. Evidence moves on, and so does my practice; how I work now is on the How I work page.

From Europe PMC (ORCID 0000-0002-0166-9406). Google Scholar profile