Leg Geometry Measurement Assistant

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Currently, pre-and post-total knee arthroplasty (TKA) lower limb alignment is assessed manually or with the aid of interactive software applications, resulting in high intra- and inter-reader variability, poor reproducibility and calibration errors.

High reader variability

Poor reproducibility

No implant support


Automated measurements on long leg radiographs enable timely and accurate decision making of lower limb deformities and can reduce reader variability and accelerate workflow efficiency. IB Lab LAMA™ is here to support you!


Deep learning technology enables automated and precise measuring of leg geometry within of ≤1° to evaluate lower limb deformities

Quick results

Reading and reporting time of lower limb deformities radiographs can be reduced from 3 minutes to <1 minute (more than 3x faster) resulting in more time for patient care

Implant Support

IB Lab LAMA™ now supports radiographs with total hip and total knee implants, providing 12 standardized measurements for both pre- and post-surgery radiographs



More than 70% of radiologists & orthopedic surgeons are interested in using IB Lab LAMA



of medical imaging specialists perceive IB Lab LAMA to be useful in their medical practice



More than 3x faster on pair with expert readers

Product description

uses deep learning technology for automated and precise measuring of leg geometry to evaluate lower limb deformities. It aids in the detection of genu varum/valgum by measuring mechanical axis deviation (MAD) and detection of leg length discrepancy by comparing right and left legs on bilateral images. Detailed analysis of mechanical and anatomical angles according to Paley allows informed decision making on next steps in treating the patient. Reading time is brought down from 3 minutes to under 60 seconds needed for calculation 1.

IB Lab LAMA highlights relevant clinical findings by applying latest international medical standards to enable timely and accurate decision making. The findings are summarized in a visual report, attached to the original x-ray image and saved automatically in the PACS system. The AI facilitates monitoring of disease progression by facilitating comparison of radiographic disease parameters over time.


71 different radiological findings, measurements, and results include*:

  • Genu varum & genu valgum 
  • Lower extremity length discrepancy
  • Mechanical angles according to Paley 
  • Mechanical axis deviation (MAD) 
  • Hip, knee, ankle angle
  • Joint line convergence angle
  • Leg length, femur length & tibia length
  • NEW support of implants and automated calibration ball detection
  • Pediatric support
  • Automatic ruler/grid detection
  • Positioning/safety checks
  • Configurable report types



IB Lab LAMA is world’s first AI software for fully automated measurements on long leg radiographs with hip or knee implants


IB Lab LAMA reduces the risk of inter-rater variability for evaluating long leg radiographs in a standardized manner


Effects of inter- and intra-rater variability in all angles and lengths are significantly reduced


IB Lab LAMA excelerate workflow efficiency by automating reporting workflows

Intended use

IB Lab LAMA is a radiological fully-automated image processing software device of either computed (CR) or directly digital (DX) images intended to aid medical professionals in the measurement of leg geometry.

The system is to be used by trained medical professionals including, but not limited to, orthopedists and radiologists. It should not be used in-lieu of full patient evaluation or solely relied upon to make or confirm a diagnosis.


What our customers say:

Jack Farr - Orthopedist

ImageBiopsy AI software is highly accurate and efficient within our PACS system, which provides valuable information on the status of the knee along the continuum of chondrosis to arthrosis.

Jack Farr, MD

The integration of the AI ​​solutions by ImageBiopsy Lab into our RIS and PACS is easy and well done. It is fun to work with and the clarity of the visualized report is an ideal support for our patient consultation.

Jochen Mueller-Stromberg, MD

AI-based solutions reduce the amount of work and the findings become more accurate. An objective value is given which can be used both for monitoring and forecasting the progress. We offer something that others don’t have.

Michael Gruber, MD

Exact diagnosis and reproducible follow-up exams are indispensable for a successful osteoarthritis therapy. Software-based methods can assist the physician in the therapy management and adjustment process.

Prof. Jochen Hofstätter, MD