AfterSurg

Recovery, measured in daily life

Digital recovery metrics after surgery.

AfterSurg transforms longitudinal, real-world activity data into objective recovery trajectories and clinically meaningful outcome measures.

AfterSurg Recovery app shown as a polished single-phone product view

Working with clinical, academic and industry teams

Imperial College London
Chelsea and Westminster Hospital NHS Foundation Trust
UCL
Cambridge University Hospitals NHS Foundation Trust
Citius Health
University of Cambridge
Imperial College Healthcare NHS Trust
AdNova Clinic
Frimley Health NHS Foundation Trust

AfterSurg Recovery Score

One continuous view of recovery

After surgery, activity typically dips before gradually increasing towards the preoperative baseline and, in some cases, beyond it.

  1. 01Establish the personal baselineActivity intensity, daily patterns and exercise behaviour create an individual reference.
  2. 02Measure recovery milestonesThe postoperative dip and return to light, full and exercise activity describe different parts of recovery.
  3. 03Look beyond baselineFunctional gain, good-day ratio, duration of benefit and extra active time describe change beyond the preoperative reference.

Explore the curveSelect a numbered point on the graph or one of the metric tiles below it.

AfterSurg Recovery ScoreSelect a stage
Interactive AfterSurg Recovery Score curveAn illustrative curve beginning with a 28-day preoperative activity baseline, followed by a postoperative dip, return milestones and activity beyond baseline.25507510012528-day baselineSurgeryTime after surgeryLater100% referenceLight · 50%Duration of benefit

Before surgery

The Activity BioSignature

Data from the 28 days before your operation are used to assess activity intensity, recurring daily patterns and exercise behaviour. Together, these form an individual preoperative reference against which postoperative change is measured.

28 daysPreoperative window3 signalsIntensity, patterns and exercise
Illustrative recovery patternMetrics describe longitudinal activity and complement clinical and patient-reported measures. They are not diagnostic.Open the metrics guide

A connected recovery platform

Clear for patients. Data-rich for clinical teams.

Purpose-built interfaces keep participation simple while giving approved teams the tools needed to understand recovery.

AfterSurg Outcomes

Blinded outcomes collection

Invited participants contribute low-burden activity data to approved clinical, research and service-evaluation projects.

For healthcare professionals
Download AfterSurg Outcomes on the App StoreGet AfterSurg Outcomes on Google Play
AfterSurg Outcomes app home screen for invited study participants
AfterSurg Recovery

Personalised recovery progress

Patients can view progress against an expected range and understand the pattern over time.

For patients
Download AfterSurg Recovery on the App StoreGet AfterSurg Recovery on Google Play
AfterSurg Recovery personalised progress screen

Case studies

Recovery measurement in practice

Examples of how AfterSurg is being applied across surgical pathways, patient-facing recovery and treatment evaluation.

Surgical innovation

Hip resurfacing with MatOrtho

Digital activity measures are being used to characterise recovery after hip resurfacing and explore meaningful postoperative milestones.

Frimley Health NHS Foundation Trust
NHS pathway

Hip and knee replacement at Frimley

A patient-facing approach to following recovery after joint replacement, supporting longitudinal data collection beyond the clinic.

Citius Health
Treatment evaluation

Arthrosamid for knee arthritis

Real-world activity data are being explored with Dr George Bownes to assess functional change following knee injection treatments.

Objective recovery evidence

From everyday activity to clinically useful outputs

AfterSurg supports prospective studies, retrospective analysis, audit, service evaluation and real-world evidence gathering—using project-specific governance and reporting.

Illustration showing everyday movement captured by a smartphone, translated into recovery graphs and publication-ready evidence
Pocket to paperEveryday movement becomes structured recovery metrics, analysis and evidence.

Longitudinal

Follow recovery across the period where change actually happens.

Low burden

Use activity already available through the participant’s phone.

Research ready

Produce curves, milestones, metrics and appropriately governed exports.

Publications

Research behind the platform

Selected peer-reviewed work from the team and its collaborators. Move through the cards and select a paper to open its record.

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Team

Clinical, research and technical leadership

A compact multidisciplinary team supported by senior clinical and academic advisors.

Leadership

Richard Kwasnicki

Richard Kwasnicki PhD, FRCS

Chief Executive Officer

Plastic and reconstructive surgeon focused on peri-operative innovation and objective recovery measurement.

Thomas York

Thomas York MD, PhD, FBCS

Chief Medical Officer

Pharmaceutical physician and clinical informatician experienced in digital health, regulatory strategy and information governance.

Jack Graham

Jack Graham BSc

Lead Software Engineer

App developer specialising in physical activity, wearables and post-procedural recovery.

Advisors

Mr Simon H Wood

Mr Simon H Wood

Consultant Plastic Surgeon

Professor Shehan Hettiaratchy

Prof Shehan Hettiaratchy

Professor of Practice and Consultant Plastic Surgeon

Professor Lord Ara Darzi

Professor Lord Ara Darzi

Academic surgeon and healthcare innovator

Professor Daniel Leff

Prof Daniel Leff

Reader and Consultant Oncoplastic Breast Surgeon

Help and support

Helping you navigate

App guidance, short demonstrations, setup guides and separate routes for patients and healthcare professionals.

Choose the right app

See whether AfterSurg Recovery or AfterSurg Outcomes is right for your purpose.

Compare the two apps

Frequently asked questions

Guidance for patients, study participants, healthcare professionals and research teams.

Open the help centre