A technique similar to the one described by Hanson for reconstruction of severe calcific Achilles' tendinosis using the flexor hallucis longus (FHL) tendon was used in 26 patients (29 tendons). This technique harvests the FHL proximally, near the tip of the medial malleolus, not from the mid foot. Follow-up on all 26 patients (mean age, 51.3 years) is provided with an average follow-up of 35 months (range, 12–58 months). All patients were evaluated postoperatively to assess pain, function, and alignment of the ankle and hindfoot. The AOFAS foot ratios for the ankle and hindfoot (total of 100 points) was used. Time to maximum improvement was 8.2 months (range, 3–20 months). Ankle-Hindfoot Scale ratings improved from 41.7 points (range, 23–63 points) preoperatively to 90.1 points (range, 49–100 points) postoperatively. All but three patients evaluated their result as good or excellent with regard to improved function and pain. No patient had marked functional deficit or deformity of the hallux after transfer of the FHL tendon. This FHL transfer technique is simpler and as effective in treating chronic Achilles' tendinosis as those techniques that harvest the FHL from the mid foot.